{"id":38139,"date":"2026-01-22T17:13:06","date_gmt":"2026-01-22T11:43:06","guid":{"rendered":"https:\/\/www.w3webschool.com\/blog\/?p=38139"},"modified":"2026-03-14T16:54:51","modified_gmt":"2026-03-14T11:24:51","slug":"mern-stack-interview-questions","status":"publish","type":"post","link":"https:\/\/www.w3webschool.com\/blog\/mern-stack-interview-questions\/","title":{"rendered":"Top 20+ MERN Stack Interview Questions for Freshers"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"38139\" class=\"elementor elementor-38139\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-179a6ee elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"179a6ee\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-415b138\" data-id=\"415b138\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-228cdc1 elementor-widget elementor-widget-html\" data-id=\"228cdc1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<section class=\"premium-aero slim-hero\">\r\n  <div class=\"gradient-bg\"><\/div>\r\n\r\n  <div class=\"hero-wrapper\">\r\n\r\n    <!-- BREADCRUMB -->\r\n    <nav class=\"breadcrumb-nav\" aria-label=\"Breadcrumb\">\r\n      <a href=\"\/blog\">Home<\/a>\r\n      <i class=\"sep\">\/<\/i>\r\n      <a href=\"\/category\/interview\" class=\"active\">\r\n        MERN Stack Interview Questions\r\n      <\/a>\r\n    <\/nav>\r\n\r\n    <!-- HERO CONTENT -->\r\n    <div class=\"hero-body\">\r\n      <h1 class=\"hero-heading\">\r\n        Top 20+ <span class=\"gradient-text\">MERN Stack Interview Questions for Freshers<\/span>\r\n        <span class=\"sub-heading\">2026 Updated Guide<\/span>\r\n      <\/h1>\r\n\r\n      <!-- META + CTA -->\r\n      <div class=\"hero-info\">\r\n        <div class=\"meta-capsule\">\r\n          <div class=\"avatar\">\r\n            <img decoding=\"async\" class=\"lazyload\" src=\"http:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2024\/12\/Poulami-Dalal-scaled-1.webp\" alt=\"Poulami Dalal \u2013 Content Writer\" title=\"\">\r\n          <\/div>\r\n          <div class=\"meta-text\">\r\n            <span class=\"author-name\">Poulami Dalal<\/span>\r\n            <span class=\"author-role\">Content Writer \u2022 20 min read<\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"cta-wrap\">\r\n          <a href=\"#dmform\" class=\"btn-premium slim-btn\">\r\n            <span>Download Interview PDF (2026)<\/span>\r\n            <svg viewBox=\"0 0 24 24\">\r\n              <path d=\"M12 15V3M12 15L8 11M12 15L16 11\" \/>\r\n            <\/svg>\r\n          <\/a>\r\n          <small class=\"cta-hint\">Instant download \u2022 No spam<\/small>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n\r\n  <\/div>\r\n<\/section>\r\n\r\n<style>\r\n@import url('https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700;800&display=swap');\r\n\r\n\/* ===== HERO ===== *\/\r\n.slim-hero{\r\n  position:relative;\r\n  padding:34px 24px;\r\n  font-family:Inter,system-ui,sans-serif;\r\n  color:#fff;\r\n  overflow:hidden;\r\n}\r\n\r\n\/* ===== BACKGROUND ===== *\/\r\n.gradient-bg{\r\n  position:absolute;\r\n  inset:0;\r\n  background:\r\n    linear-gradient(135deg,#020617 45%,#020b2a 100%),\r\n    radial-gradient(circle at 18% 22%,rgba(59,130,246,.25),transparent 45%);\r\n  z-index:0;\r\n}\r\n\r\n.hero-wrapper{\r\n  max-width:1200px;\r\n  margin:auto;\r\n  position:relative;\r\n  z-index:1;\r\n}\r\n\r\n\/* ===== BREADCRUMB ===== *\/\r\n.breadcrumb-nav{\r\n  font-size:13px;\r\n  margin-bottom:20px;\r\n}\r\n.breadcrumb-nav a{\r\n  color:#94a3b8;\r\n  text-decoration:none;\r\n}\r\n.breadcrumb-nav .active{\r\n  color:#3b82f6;\r\n  font-weight:600;\r\n}\r\n.sep{margin:0 8px;opacity:.4}\r\n\r\n\/* ===== HEADING ===== *\/\r\n.hero-heading{\r\n  font-size:clamp(1.4rem,3vw,34px);\r\n  font-weight:800;\r\n  line-height:1.25;\r\n  margin-bottom:24px;\r\n  letter-spacing:-.02em;\r\n}\r\n.sub-heading{\r\n  display:block;\r\n  font-size:16px;\r\n  font-weight:400;\r\n  color:#94a3b8;\r\n  margin-top:6px;\r\n}\r\n.gradient-text{\r\n  background:linear-gradient(135deg,#ffffff,#60a5fa);\r\n  -webkit-background-clip:text;\r\n  -webkit-text-fill-color:transparent;\r\n}\r\n\r\n\/* ===== META + CTA ===== *\/\r\n.hero-info{\r\n  display:flex;\r\n  justify-content:space-between;\r\n  align-items:center;\r\n  gap:22px;\r\n  padding-top:18px;\r\n  border-top:1px solid rgba(255,255,255,.08);\r\n}\r\n\r\n.meta-capsule{\r\n  display:flex;\r\n  gap:14px;\r\n  align-items:center;\r\n}\r\n\r\n.avatar{\r\n  width:44px;\r\n  height:44px;\r\n  border-radius:50%;\r\n  overflow:hidden;\r\n  border:1px solid rgba(255,255,255,.15);\r\n}\r\n.avatar img{\r\n  width:100%;\r\n  height:100%;\r\n  object-fit: cover;\r\n  object-position: center;\r\n  image-rendering: -webkit-optimize-contrast;\r\n}\r\n\r\n.author-name{\r\n  font-weight:700;\r\n  font-size:15px;\r\n}\r\n.author-role{\r\n  font-size:13px;\r\n  color:#94a3b8;\r\n}\r\n\r\n\/* ===== CTA ===== *\/\r\n.cta-wrap{\r\n  text-align:right;\r\n}\r\n\r\n.slim-btn{\r\n  display:inline-flex;\r\n  align-items:center;\r\n  gap:10px;\r\n  padding:10px 16px;\r\n  background:#ffffff;\r\n  color:#020617;\r\n  border-radius:12px;\r\n  font-weight:700;\r\n  font-size:14px;\r\n  text-decoration:none;\r\n  transition:.25s ease;\r\n}\r\n.slim-btn svg{\r\n  width:18px;\r\n  height:18px;\r\n  stroke:#020617;\r\n  stroke-width:2.5;\r\n  fill:none;\r\n}\r\n.slim-btn:hover{\r\n  transform:translateY(-2px);\r\n  box-shadow:0 12px 24px rgba(59,130,246,.25);\r\n}\r\n\r\n.cta-hint{\r\n  display:block;\r\n  margin-top:6px;\r\n  font-size:12px;\r\n  color:#94a3b8;\r\n}\r\n\r\n\/* ===== JUMP LINKS ===== *\/\r\n.jump-links{\r\n  display:flex;\r\n  gap:14px;\r\n  margin-top:22px;\r\n  flex-wrap:wrap;\r\n}\r\n.jump-links a{\r\n  font-size:13px;\r\n  color:#93c5fd;\r\n  text-decoration:none;\r\n  padding:6px 12px;\r\n  border-radius:999px;\r\n  background:rgba(59,130,246,.12);\r\n}\r\n.jump-links a:hover{\r\n  background:rgba(59,130,246,.2);\r\n}\r\n\r\n\/* ===== MOBILE ===== *\/\r\n@media(max-width:768px){\r\n  .hero-info{\r\n    flex-direction:column;\r\n    align-items:flex-start;\r\n  }\r\n  .cta-wrap{\r\n    text-align:left;\r\n  }\r\n  .jump-links{\r\n    gap:10px;\r\n  }\r\n}\r\n<\/style>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fd955ee elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fd955ee\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-16 elementor-top-column elementor-element elementor-element-89f6ae6\" data-id=\"89f6ae6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4bdace8 elementor-toc--content-ellipsis elementor-widget elementor-widget-table-of-contents\" data-id=\"4bdace8\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;exclude_headings_by_selector&quot;:[],&quot;headings_by_tags&quot;:[&quot;h1&quot;,&quot;h2&quot;],&quot;marker_view&quot;:&quot;numbers&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t<div class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<div id=\"elementor-toc__4bdace8\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<i class=\"elementor-toc__spinner eicon-animation-spin eicon-loading\" aria-hidden=\"true\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-8c4c158\" data-id=\"8c4c158\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-3fbe847 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"3fbe847\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-84dba45\" data-id=\"84dba45\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0e9c3a9 elementor-widget elementor-widget-image\" data-id=\"0e9c3a9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"2240\" height=\"1260\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions.png\" class=\"attachment-full size-full wp-image-38143 lazyload\" alt=\"MERN Stack Interview Questions\" data-srcset=\"https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions.png 2240w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions-300x169.png 300w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions-1100x619.png 1100w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions-768x432.png 768w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions-1536x864.png 1536w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions-2048x1152.png 2048w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions-150x84.png 150w\" sizes=\"(max-width: 2240px) 100vw, 2240px\" title=\"\"><noscript><img decoding=\"async\" width=\"2240\" height=\"1260\" src=\"https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions.png\" class=\"attachment-full size-full wp-image-38143 lazyload\" alt=\"MERN Stack Interview Questions\" srcset=\"https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions.png 2240w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions-300x169.png 300w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions-1100x619.png 1100w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions-768x432.png 768w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions-1536x864.png 1536w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions-2048x1152.png 2048w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/01\/MERN-Stack-Interview-Questions-150x84.png 150w\" sizes=\"(max-width: 2240px) 100vw, 2240px\" title=\"\"><\/noscript>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4318a7f elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"4318a7f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">If you are planning to join the Web stack development sector, practicing MERN Stack interview questions is mandatory.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">As businesses actively hiring JavaScript-based full-stack developers, the MERN stack has become one of the most in-demand stacks in web development.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">This article covers the <\/span><b><i>top 20<\/i><\/b><span style=\"font-weight: 400;\">+<\/span><b><i> MERN Stack interview questions and answers<\/i><\/b><span style=\"font-weight: 400;\"> for freshers. I will explain each question in very simple and interview-ready language, best for beginners. This guide is structured to help you crack real interview questions, technical rounds, and machine language discussions.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">Let\u2019s get started.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22cb4b3 elementor-widget elementor-widget-html\" data-id=\"22cb4b3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<style>\r\n\/* ===== CTA SECTION ===== *\/\r\n.premium-cta-section{\r\n  padding:36px 20px;\r\n  background:linear-gradient(135deg,#020617 0%,#0b1228 60%,#020617 100%);\r\n  font-family:Inter,system-ui,sans-serif;\r\n  border-radius:12px;\r\n}\r\n\r\n\/* CONTAINER *\/\r\n.premium-cta-container{\r\n  max-width:1100px;\r\n  margin:auto;\r\n}\r\n\r\n\/* BOX *\/\r\n.premium-cta-box{\r\n  background:rgba(255,255,255,.04);\r\n  border:1px solid rgba(148,163,184,.18);\r\n  border-radius:18px;\r\n  padding:34px 20px;\r\n  text-align:center;\r\n}\r\n\r\n\/* CONTENT *\/\r\n.premium-cta-content{\r\n  color:#fff;\r\n  margin-bottom:22px;\r\n}\r\n\r\n.premium-cta-heading{\r\n  font-size:30px;\r\n  font-weight:800;\r\n  margin-bottom:12px;\r\n  letter-spacing:-.02em;\r\n}\r\n\r\n.premium-cta-heading span{\r\n  color:#38bdf8;\r\n}\r\n\r\n.premium-cta-content p{\r\n  font-size:15.5px;\r\n  color:#cbd5e1;\r\n  line-height:1.65;\r\n  max-width:720px;\r\n  margin:0 auto;\r\n}\r\n\r\n\/* FORM WRAPPER *\/\r\n.cta-elementor-form{\r\n  margin-top:26px;\r\n}\r\n\r\n\/* ===== MOBILE ===== *\/\r\n@media(max-width:768px){\r\n  .premium-cta-section{\r\n    padding:30px 16px;\r\n  }\r\n\r\n  .premium-cta-box{\r\n    padding:30px 20px;\r\n  }\r\n\r\n  .premium-cta-heading{\r\n    font-size:24px;\r\n  }\r\n\r\n  .premium-cta-content p{\r\n    font-size:14.5px;\r\n  }\r\n}\r\n<\/style>\r\n\r\n<section class=\"premium-cta-section\" id=\"dmform\">\r\n  <div class=\"premium-cta-container\">\r\n    <div class=\"premium-cta-box\">\r\n\r\n      <div class=\"premium-cta-content\">\r\n        <div class=\"premium-cta-heading\">Before Your Next <span>MERN Stack Interview<\/span><\/div>\r\n        <p>\r\n          Download the <strong>2026 Updated MERN Stack Interview Questions PDF<\/strong>\r\n          and revise anytime. Walk into interviews with confidence and structured answers.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"cta-elementor-form\">\r\n      \t\t<div data-elementor-type=\"page\" data-elementor-id=\"40930\" class=\"elementor elementor-40930\" data-elementor-post-type=\"elementor_library\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6d0d902 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"6d0d902\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f83547c\" data-id=\"f83547c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a49415e elementor-button-align-center elementor-widget elementor-widget-form\" data-id=\"a49415e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;button_width&quot;:&quot;40&quot;,&quot;step_next_label&quot;:&quot;Next&quot;,&quot;step_previous_label&quot;:&quot;Previous&quot;,&quot;step_type&quot;:&quot;number_text&quot;,&quot;step_icon_shape&quot;:&quot;circle&quot;}\" data-widget_type=\"form.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<form class=\"elementor-form\" method=\"post\" name=\"MERN Stack QNA Form\">\n\t\t\t<input type=\"hidden\" name=\"post_id\" value=\"40930\"\/>\n\t\t\t<input type=\"hidden\" name=\"form_id\" value=\"a49415e\"\/>\n\t\t\t<input type=\"hidden\" name=\"referer_title\" value=\"Top 20+ MERN Stack Interview Questions For Freshers In 2026\" \/>\n\n\t\t\t\t\t\t\t<input type=\"hidden\" name=\"queried_id\" value=\"38139\"\/>\n\t\t\t\n\t\t\t<div class=\"elementor-form-fields-wrapper elementor-labels-\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-name elementor-col-30 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-name\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tName\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[name]\" id=\"form-field-name\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Enter Your Name \" required=\"required\" aria-required=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-tel elementor-field-group elementor-column elementor-field-group-email elementor-col-30 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-email\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tPhone\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t<input size=\"1\" type=\"tel\" name=\"form_fields[email]\" id=\"form-field-email\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Enter Your Phone No.\" required=\"required\" aria-required=\"true\" pattern=\"[0-9()#&amp;+*-=.]+\" title=\"Only numbers and phone characters (#, -, *, etc) are accepted.\">\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-group elementor-column elementor-field-type-submit elementor-col-40 e-form__buttons\">\n\t\t\t\t\t<button class=\"elementor-button elementor-size-sm\" type=\"submit\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Get PDF Access<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t<\/div>\r\n\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-77b566d elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"77b566d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-de4b800\" data-id=\"de4b800\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dc060e9 elementor-widget elementor-widget-heading\" data-id=\"dc060e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why Prepare for MERN Stack Interviews?\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-562fd82 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"562fd82\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Before moving to the MERN Stack interview questions, you should know why MERN Stack preparation is essential. Here are the reasons;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">MERN Stack developers are experts in both full-stack development and JavaScript.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">MERN Stack developers can do flexible data handling while building a scalable architecture for web applications. Popular companies like Netflix and Facebook are actively hiring such professionals.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Increasing demand in SaaS and product-based companies. Popular companies like Walmart, AirBnb, Market Bazaar, and Rubick AI are hiring MERN Stack developers.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.ambitionbox.com\/profile\/mern-stack-developer-salary\" rel=\"nofollow noopener\" target=\"_blank\"><b><i>AmbitionBox<\/i><\/b><\/a> <span style=\"font-weight: 400;\">shows that an average MERN Stack developer salary in India ranges between \u20b94.2 Lakhs to \u20b97 Lakhs, which is 20% to 30% higher than other traditional web developer jobs.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Interviews check your real industry knowledge and skills. <\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-986f530 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"986f530\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Preparing these most common MERN Stack Interview questions will help you.<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Crack scenario-based technical questions.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid rejection from interviewers due to limited Node and React knowledge.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Give better performance in the architecture development round and the live coding round.\u00a0<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-44bec1f elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"44bec1f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-f627ae1\" data-id=\"f627ae1\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a73aea4 elementor-widget elementor-widget-heading\" data-id=\"a73aea4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Fresher-level MERN Stack Interview Questions and Answers\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2fba09c elementor-widget elementor-widget-heading\" data-id=\"2fba09c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. What is MongoDB?\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c7c7044 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"c7c7044\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">MongoDB is a NoSQL-based database that helps in storing data in JSON-like BSON format. It is best suited for scalable web applications.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-69c7d95 elementor-widget elementor-widget-heading\" data-id=\"69c7d95\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. What is MERN\u00a0 Stack?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26e233e elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"26e233e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">MERN Stack is a full-stack technology that consists of MongoDB, Express.js, React.js, and Node.js. They combine to build highly-functional web applications using JavaScript.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-76f7d00 elementor-widget elementor-widget-heading\" data-id=\"76f7d00\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3. Explain the role of React in the MERN Stack.<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-67df6ec elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"67df6ec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">React in the MERN Stack is used for frontend functions. React helps in managing state, UI, and building reusable elements for highly interactive and faster user interfaces.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0a3d456 elementor-widget elementor-widget-heading\" data-id=\"0a3d456\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4. Why is the MERN stack preferred over LAMP or MEAN Stack?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a32d8f2 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"a32d8f2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">MERN uses end-to-end JavaScript that is from the frontend to the backend to the databases. So, no need to switch languages, and this speeds the development, reducing complexity.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">As compared to LAMP and MEAN stack, MERN is better for;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Real-time web applications.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Single Page Applications.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Higher performance and scalability.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-92566da elementor-widget elementor-widget-heading\" data-id=\"92566da\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">5. What is Node.js?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5b6e1c9 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"5b6e1c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Node.js is a runtime environment that allows JavaScript to run on the server side with the help of Chrome\u2019s V8 engine. This is the most popular unified programming language for backend and frontend. This non-blocking architecture manages multiple existing connections.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-79ae528 elementor-widget elementor-widget-heading\" data-id=\"79ae528\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">6. What is Express.js?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d65d3ae elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"d65d3ae\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Express.js is a framework for Node.js that helps in simplifying the process of making server-side logic. It handles HTTP requests and manages different tasks such as data parsing, logging, and authentication. It connects React with MongoDB, allowing easy communication.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9f52249 elementor-widget elementor-widget-heading\" data-id=\"9f52249\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">7.  What is the MVC pattern in MERN?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9477a41 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"9477a41\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">MVC pattern in MERN stands for\u00a0 Model View Controller.<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">M for Model: Database Logic<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">V for View: React UI<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C for Controller: APIs and business logic<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-807b40e elementor-widget elementor-widget-heading\" data-id=\"807b40e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">8. What do you mean by React Hooks? Name some common React Hooks.\u00a0<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-35215da elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"35215da\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">React Hooks refers to special JavaScript functions. This allows functional elements to apply React and state features. They boost readability and code reusage. Some common Hooks are useContext, useState, useRef, and useReducer.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a313a01 elementor-widget elementor-widget-heading\" data-id=\"a313a01\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">9. What do you mean by Server-Side Rendering (SSR)?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b9b93f7 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"b9b93f7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">SSR, or Server-Side-Rendering, refers to rendering React elements on the server side rather than the browser side. This boosts the page loading speed while improving SEO.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fc2940f elementor-widget elementor-widget-heading\" data-id=\"fc2940f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">10. What are React Fragments, and mention their functions.\u00a0<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-42b2788 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"42b2788\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">React Fragments help you group multiple elements together without adding any unnecessary nodes to the DOM. This helps in keeping a clean DOM structure with enhanced performance.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">Its functions are;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It prevents CSS or layout issues using modern techniques like Flexbox or CSS Grids.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It helps in maintaining a cleaner DOM Structure, avoiding extra nesting.\u00a0<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8f100e1 elementor-widget elementor-widget-heading\" data-id=\"8f100e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">11. What are Webpack and Babel?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-08bf812 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"08bf812\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Webpack is a module bundler that helps in bundling and optimizing files such as CSS, JavaScript, and images that can be fast-loaded in browsers.<\/span><\/p><p><span style=\"font-weight: 400;\">Babel is a JavaScript compiler that converts JSX code and ES6+ into JavaScript that is highly compatible with different browsers. In simple terms, it helps make code highly compatible with browsers.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fed6b79 elementor-widget elementor-widget-heading\" data-id=\"fed6b79\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">12. What do you mean by React Router?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8d1a056 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"8d1a056\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">React Router refers to the JavaScript library that helps in handling navigation and client-side routing. It helps to build multiple-view Single Page Applications (SPAs).<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8670ebd elementor-widget elementor-widget-heading\" data-id=\"8670ebd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">13. What are REST APIs?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7b3344c elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"7b3344c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">REST APIs are an architectural style that helps in communication between the backend and the frontend with the help of HTTP methods like DELETE, POST, GET, and PUT.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3dc481f elementor-widget elementor-widget-heading\" data-id=\"3dc481f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">14. What is Aggregation in MongoDB?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-017a20f elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"017a20f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Aggregation in MongoDB is a framework that is used to collect, process, and transfer data using stages such as $project, $match, and $group. They help in filtering and sorting documents.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-25d1660 elementor-widget elementor-widget-heading\" data-id=\"25d1660\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">15. What is Replication in MongoDB?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cf4681a elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"cf4681a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Replication in MongoDB refers to copying data from different servers to ensure data safety and higher availability.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1658141 elementor-widget elementor-widget-heading\" data-id=\"1658141\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">16. What are Operators in MongoDB?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9b89e34 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"9b89e34\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Operators in MongoDB are special symbols or keywords that help in filtering and modifying data in queries. Some operators are $lt, $eq, $gt, $and, $gte, $exists, $nin, and $near.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-978fa71 elementor-widget elementor-widget-heading\" data-id=\"978fa71\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">17. What is the difference between $push and $addToSet?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1005857 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"1005857\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b><i>$push<\/i><\/b><span style=\"font-weight: 400;\"> adds value even if duplicates are present.<\/span><\/p><p><b><i>$addToSet <\/i><\/b><span style=\"font-weight: 400;\">helps in adding values only if they are not present there.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-118207e elementor-widget elementor-widget-heading\" data-id=\"118207e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">18. What is the difference between SQL and NoSQL databases?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-78d8621 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"78d8621\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b><i>SQL databases<\/i><\/b><span style=\"font-weight: 400;\"> refer to the table-based databases with a fixed schema, while <\/span><b><i>NoSQL databases<\/i><\/b><span style=\"font-weight: 400;\"> are document-based databases without a schema.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-11e993b elementor-widget elementor-widget-heading\" data-id=\"11e993b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">19. What is the difference between find() and findOne() ?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16dd777 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"16dd777\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table style=\"height: 436px;\" width=\"282\"><tbody><tr><td><p><b>Features<\/b><\/p><\/td><td><p><b>find()<\/b><\/p><\/td><td><p><b>findOne()<\/b><\/p><\/td><\/tr><tr><td><p><span style=\"font-weight: 400;\">Result<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">It returns multiple documents\u00a0<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">It returns onle one document<\/span><\/p><\/td><\/tr><tr><td><p><span style=\"font-weight: 400;\">Performance<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">Slower for large databases<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">Faster as there is need for one record\u00a0<\/span><\/p><\/td><\/tr><tr><td><p><span style=\"font-weight: 400;\">Output type<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">An array after conversion<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">Single document like object<\/span><\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d19177c elementor-widget elementor-widget-heading\" data-id=\"d19177c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">20. What is JSX in React?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e9cd806 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"e9cd806\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">JSX, or JavaScript XML, refers to a syntax extension used in React to show how a user interface should look. This syntax extension allows writing HTML inside a JavaScript framework. It helps improve readability and maintainability, offering a clear visual UI structure.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-262151b elementor-widget elementor-widget-heading\" data-id=\"262151b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">21. How do you save large files (like Photos) into a MongoDB database?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6a4d82 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"d6a4d82\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Large files like photos are saved using cloud storage or GridFS, and you can only save the file URL in MongoDB.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-70f700e elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"70f700e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-b78092b\" data-id=\"b78092b\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-43bbc00 elementor-widget elementor-widget-heading\" data-id=\"43bbc00\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to Crack MERN Stack Interviews Faster (Pro Tips)\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c7f4d7 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"1c7f4d7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Interviewers hire candidates who;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Have a job-ready portfolio showcasing real projects.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Have a clear understanding of web architecture.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">That\u2019s why professional training and structured learning are mandatory.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-f435a7a elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"f435a7a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-4407ff7\" data-id=\"4407ff7\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-457b3c3 elementor-widget elementor-widget-html\" data-id=\"457b3c3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<style>\r\n\/* ===== CTA SECTION ===== *\/\r\n.premium-cta-section{\r\n  padding:36px 20px;\r\n  background:linear-gradient(135deg,#020617 0%,#0b1228 60%,#020617 100%);\r\n  font-family:Inter,system-ui,sans-serif;\r\n  border-radius:12px;\r\n}\r\n\r\n\/* CONTAINER *\/\r\n.premium-cta-container{\r\n  max-width:1100px;\r\n  margin:auto;\r\n}\r\n\r\n\/* BOX *\/\r\n.premium-cta-box{\r\n  background:rgba(255,255,255,.04);\r\n  border:1px solid rgba(148,163,184,.18);\r\n  border-radius:18px;\r\n  padding:34px 20px;\r\n  text-align:center;\r\n}\r\n\r\n\/* CONTENT *\/\r\n.premium-cta-content{\r\n  color:#fff;\r\n  margin-bottom:22px;\r\n}\r\n\r\n.premium-cta-heading{\r\n  font-size:30px;\r\n  font-weight:800;\r\n  margin-bottom:12px;\r\n  letter-spacing:-.02em;\r\n}\r\n\r\n.premium-cta-heading span{\r\n  color:#38bdf8;\r\n}\r\n\r\n.premium-cta-content p{\r\n  font-size:15.5px;\r\n  color:#cbd5e1;\r\n  line-height:1.65;\r\n  max-width:720px;\r\n  margin:0 auto;\r\n}\r\n\r\n\/* FORM WRAPPER *\/\r\n.cta-elementor-form{\r\n  margin-top:26px;\r\n}\r\n\r\n\/* ===== MOBILE ===== *\/\r\n@media(max-width:768px){\r\n  .premium-cta-section{\r\n    padding:30px 16px;\r\n  }\r\n\r\n  .premium-cta-box{\r\n    padding:30px 20px;\r\n  }\r\n\r\n  .premium-cta-heading{\r\n    font-size:24px;\r\n  }\r\n\r\n  .premium-cta-content p{\r\n    font-size:14.5px;\r\n  }\r\n}\r\n<\/style>\r\n\r\n<section class=\"premium-cta-section\" id=\"dmform\">\r\n  <div class=\"premium-cta-container\">\r\n    <div class=\"premium-cta-box\">\r\n\r\n      <div class=\"premium-cta-content\">\r\n        <div class=\"premium-cta-heading\">Before Your Next <span>MERN Stack Interview<\/span><\/div>\r\n        <p>\r\n          Download the <strong>2026 Updated MERN Stack Interview Questions PDF<\/strong>\r\n          and revise anytime. Walk into interviews with confidence and structured answers.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"cta-elementor-form\">\r\n      \t\t<div data-elementor-type=\"page\" data-elementor-id=\"40930\" class=\"elementor elementor-40930\" data-elementor-post-type=\"elementor_library\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6d0d902 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"6d0d902\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f83547c\" data-id=\"f83547c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a49415e elementor-button-align-center elementor-widget elementor-widget-form\" data-id=\"a49415e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;button_width&quot;:&quot;40&quot;,&quot;step_next_label&quot;:&quot;Next&quot;,&quot;step_previous_label&quot;:&quot;Previous&quot;,&quot;step_type&quot;:&quot;number_text&quot;,&quot;step_icon_shape&quot;:&quot;circle&quot;}\" data-widget_type=\"form.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<form class=\"elementor-form\" method=\"post\" name=\"MERN Stack QNA Form\">\n\t\t\t<input type=\"hidden\" name=\"post_id\" value=\"40930\"\/>\n\t\t\t<input type=\"hidden\" name=\"form_id\" value=\"a49415e\"\/>\n\t\t\t<input type=\"hidden\" name=\"referer_title\" value=\"Top 20+ MERN Stack Interview Questions For Freshers In 2026\" \/>\n\n\t\t\t\t\t\t\t<input type=\"hidden\" name=\"queried_id\" value=\"38139\"\/>\n\t\t\t\n\t\t\t<div class=\"elementor-form-fields-wrapper elementor-labels-\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-name elementor-col-30 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-name\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tName\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[name]\" id=\"form-field-name\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Enter Your Name \" required=\"required\" aria-required=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-tel elementor-field-group elementor-column elementor-field-group-email elementor-col-30 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-email\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tPhone\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t<input size=\"1\" type=\"tel\" name=\"form_fields[email]\" id=\"form-field-email\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Enter Your Phone No.\" required=\"required\" aria-required=\"true\" pattern=\"[0-9()#&amp;+*-=.]+\" title=\"Only numbers and phone characters (#, -, *, etc) are accepted.\">\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-group elementor-column elementor-field-type-submit elementor-col-40 e-form__buttons\">\n\t\t\t\t\t<button class=\"elementor-button elementor-size-sm\" type=\"submit\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Get PDF Access<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t<\/div>\r\n\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-a947cba elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"a947cba\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-d559c8e\" data-id=\"d559c8e\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e2b4936 elementor-widget elementor-widget-heading\" data-id=\"e2b4936\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FAQs on MERN Stack Developer Interview Questions\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ec2358c elementor-widget elementor-widget-accordion\" data-id=\"ec2358c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2471\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-2471\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Q. Is MERN Stack a good career for freshers in 2026?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2471\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-2471\"><p><span style=\"font-weight: 400;\">Yes, MERN Stack is one of the most promising technologies for freshers who want to step into the web development industry in 2026. It is popular as it uses only JavaScript on the frontend and backend to reduce learning issues while offering higher career opportunities.<\/span><\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2472\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-2472\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Q. Are MERN Stack interviews more frontend-focused or backend-focused?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2472\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-2472\"><p><span style=\"font-weight: 400;\">Most of the MERN Stack interviews are 40% focused on frontend and 60% on backend, especially when openings are for full-stack web developer roles. Practice and prepare Express, Node.js, authentication, and MongoDB queries. <\/span><\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2473\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-2473\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Q. What type of projects help me crack MERN Stack interviews? <\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2473\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-2473\"><p><span style=\"font-weight: 400;\">The project types are;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Admin dashboard<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Authentication System (JWT)<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">REST API based web applications<\/span><\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2474\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-2474\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Q. How long does it take to prepare for MERN Stack interviews?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2474\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-2474\"><p><span style=\"font-weight: 400;\">With structured training, a fresher can prepare for MERN Stack interviews in 3 to 4 months. You can reduce the preparation time with proper training and consistent practice.\u00a0<\/span><\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2475\" class=\"elementor-tab-title\" data-tab=\"5\" role=\"button\" aria-controls=\"elementor-tab-content-2475\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Q. What topics of React are essential for MERN Stack interviews? <\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2475\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"5\" role=\"region\" aria-labelledby=\"elementor-tab-title-2475\"><p><span style=\"font-weight: 400;\">The topics are;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">API integration<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">An in-depth knowledge of Hooks<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">State management and routing<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Context API and basic Redux<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Component lifecycle\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Backend integration<\/span><\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-03ecb07 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"03ecb07\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-edaafe6\" data-id=\"edaafe6\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-aa83208 elementor-widget elementor-widget-heading\" data-id=\"aa83208\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Final Thoughts,<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dd71e24 elementor-widget elementor-widget-text-editor\" data-id=\"dd71e24\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Cracking MERN Stack interview questions is not just memorising answers! It\u2019s about having a clear idea of how full-stack web applications function in a real setting. Interviewers hire developers who have a complete understanding of MERN architecture, write clean Node.js and React code while managing databases and APIs smoothly.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">This guide on MERN Stack interview questions offers you a solid foundation on basic concepts.\u00a0 But if you want to stand out from the crowd, you must practice real-client projects with structured training.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">If you have more doubts or want to get ready for upcoming interviews, just connect with<\/span><a title=\"W3 Web School\" href=\"https:\/\/www.w3webschool.com\/\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">W3 Web School<\/span><\/a><span style=\"font-weight: 400;\">\u2019s team of professionals to avoid any missed opportunities in 2026!<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-16 elementor-top-column elementor-element elementor-element-43ca056 elementor-hidden-tablet elementor-hidden-mobile\" data-id=\"43ca056\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c9c4dac elementor-widget elementor-widget-html\" data-id=\"c9c4dac\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"simple-cat-block sticky-cat\">\r\n  <h3 class=\"simple-cat-heading\">Categories<\/h3>\r\n\r\n  <ul class=\"simple-cat-menu\">\r\n    <li><a href=\"https:\/\/www.w3webschool.com\/blog\/category\/web-development\/\">Full Stack Web Development<\/a><\/li>\r\n    <li><a href=\"https:\/\/www.w3webschool.com\/blog\/category\/web-development\/web-design\/\">Web Design<\/a><\/li>\r\n    <li><a href=\"https:\/\/www.w3webschool.com\/blog\/category\/web-development\/backend-web-development\/\">Backend Web Development<\/a><\/li>\r\n    <li><a href=\"https:\/\/www.w3webschool.com\/blog\/category\/web-development\/mern-stack-development\/\">MERN Stack Development<\/a><\/li>\r\n  <\/ul>\r\n<\/div>\r\n\r\n<style>\r\n\/* ===== CATEGORY BLOCK ===== *\/\r\n.simple-cat-block{\r\n  max-width:320px;\r\n  width:100%;\r\n  padding:20px;\r\n  background:#ffffff;\r\n  font-family:Inter,system-ui,sans-serif;\r\n  border:1px solid #e5e7eb;\r\n  border-radius:6px;\r\n}\r\n\r\n\/* ===== STICKY ===== *\/\r\n.sticky-cat{\r\n  position:sticky;\r\n  top:90px; \/* header ke niche adjust kar sakte ho *\/\r\n}\r\n\r\n\/* ===== HEADING ===== *\/\r\n.simple-cat-heading{\r\n  font-size:18px;\r\n  font-weight:600;\r\n  color:#020617;\r\n  margin-bottom:14px;\r\n  border-bottom:1px solid #e5e7eb;\r\n  padding-bottom:8px;\r\n}\r\n\r\n\/* ===== MENU ===== *\/\r\n.simple-cat-menu{\r\n  list-style:none;\r\n  margin:0;\r\n  padding:0;\r\n}\r\n\r\n.simple-cat-menu li{\r\n  border-bottom:1px solid #f1f5f9;\r\n}\r\n\r\n.simple-cat-menu li:last-child{\r\n  border-bottom:none;\r\n}\r\n\r\n.simple-cat-menu a{\r\n  display:block;\r\n  padding:10px 0;\r\n  font-size:15px;\r\n  color:#475569;\r\n  text-decoration:none;\r\n  transition:all .2s ease;\r\n}\r\n\r\n.simple-cat-menu a:hover{\r\n  color:#0077E5;\r\n  padding-left:6px;\r\n}\r\n\r\n\/* ===== RESPONSIVE: HIDE ON MOBILE ===== *\/\r\n@media (max-width: 991px){\r\n  .simple-cat-block{\r\n    display:none;\r\n  }\r\n}\r\n<\/style>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-27e211a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"27e211a\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-wide\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8dc4b32\" data-id=\"8dc4b32\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-21c39d1 elementor-widget elementor-widget-html\" data-id=\"21c39d1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<!-- VERIFIED AUTHOR BIO | EEAT SAFE | CONTENT WRITER -->\r\n\r\n<style>\r\n.author-box{\r\n  display:flex;\r\n  gap:18px;\r\n  padding:18px;\r\n\r\n  border:1px solid #e5e7eb;\r\n  border-radius:12px;\r\n  background:#fff;\r\n  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont;\r\n}\r\n\r\n.author-img img{\r\n  width:90px;\r\n  height:90px;\r\n  border-radius:50%;\r\n  object-fit:cover;\r\n}\r\n\r\n.author-content{flex:1;}\r\n\r\n.author-name{\r\n  display:flex;\r\n  align-items:center;\r\n  gap:6px;\r\n}\r\n\r\n.author-name h3{\r\n  margin:0;\r\n  font-size:20px;\r\n  font-weight:700;\r\n  color:#111;\r\n}\r\n\r\n\/* Instagram-style blue tick *\/\r\n.blue-tick{\r\n  width:18px;\r\n  height:18px;\r\n  background:#1d9bf0;\r\n  color:#fff;\r\n  border-radius:50%;\r\n  font-size:12px;\r\n  font-weight:700;\r\n  display:flex;\r\n  align-items:center;\r\n  justify-content:center;\r\n}\r\n\r\n.author-role{\r\n  font-size:14px;\r\n  font-weight:600;\r\n  color:#444;\r\n  margin:4px 0 8px;\r\n}\r\n\r\n.author-bio{\r\n  font-size:14px;\r\n  line-height:1.6;\r\n  color:#555;\r\n  margin-bottom:10px;\r\n}\r\n\r\n.author-link a{\r\n  font-size:14px;\r\n  font-weight:600;\r\n  color:#0a66c2;\r\n  text-decoration:none;\r\n}\r\n\r\n.author-link a:hover{text-decoration:underline;}\r\n\r\n@media(max-width:600px){\r\n  .author-box{\r\n    flex-direction:column;\r\n    text-align:center;\r\n    align-items:center;\r\n  }\r\n  .author-name{justify-content:center;}\r\n}\r\n<\/style>\r\n\r\n<section class=\"author-box\" itemscope itemtype=\"https:\/\/schema.org\/Person\">\r\n\r\n  <div class=\"author-img\">\r\n    <img decoding=\"async\" class=\"lazyload\" src=\"http:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2024\/12\/Poulami-Dalal-scaled-1.webp\" alt=\"Poulami Dalal \u2013 Verified Professional Content Writer\" itemprop=\"image\" title=\"\">\r\n  <\/div>\r\n\r\n  <div class=\"author-content\">\r\n\r\n    <div class=\"author-name\">\r\n      <h3 itemprop=\"name\">Poulami Dalal<\/h3>\r\n      <span class=\"blue-tick\" title=\"Verified Author\">\u2713<\/span>\r\n    <\/div>\r\n\r\n    <div class=\"author-role\" itemprop=\"jobTitle\">\r\n      Professional Content Writer\r\n    <\/div>\r\n\r\n   <p class=\"author-bio\" itemprop=\"description\">\r\n  Poulami Dalal is a verified professional content writer with 3+ years of experience in\r\n  SEO-focused blogs, website content, and long-form informational articles.\r\n  Her work is grounded in research, clear search intent understanding, and practical\r\n  digital marketing exposure, helping readers trust the information and brands\r\n  build long-term credibility online.\r\n<\/p>\r\n\r\n\r\n    <div class=\"author-link\">\r\n      <a href=\"https:\/\/www.linkedin.com\/in\/poulami-dalal\/\" target=\"_blank\" itemprop=\"sameAs\" rel=\"noopener\">\r\n        LinkedIn (Verified Profile)\r\n      <\/a>\r\n    <\/div>\r\n\r\n  <\/div>\r\n<\/section>\r\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Home \/ MERN Stack Interview Questions Top 20+ MERN Stack Interview Questions for Freshers 2026 Updated Guide Poulami Dalal Content Writer \u2022 20 min read Download Interview PDF (2026) Instant download \u2022 No spam Table of Contents If you are planning to join the Web stack development sector, practicing MERN Stack interview questions is mandatory.\u00a0 &#8230; <a title=\"Top 20+ MERN Stack Interview Questions for Freshers\" class=\"read-more\" href=\"https:\/\/www.w3webschool.com\/blog\/mern-stack-interview-questions\/\" aria-label=\"Read more about Top 20+ MERN Stack Interview Questions for Freshers\">Read more<\/a><\/p>\n","protected":false},"author":11,"featured_media":38143,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[1613],"tags":[],"class_list":["post-38139","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mern-stack-development"],"_links":{"self":[{"href":"https:\/\/www.w3webschool.com\/blog\/wp-json\/wp\/v2\/posts\/38139"}],"collection":[{"href":"https:\/\/www.w3webschool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.w3webschool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.w3webschool.com\/blog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/www.w3webschool.com\/blog\/wp-json\/wp\/v2\/comments?post=38139"}],"version-history":[{"count":83,"href":"https:\/\/www.w3webschool.com\/blog\/wp-json\/wp\/v2\/posts\/38139\/revisions"}],"predecessor-version":[{"id":41615,"href":"https:\/\/www.w3webschool.com\/blog\/wp-json\/wp\/v2\/posts\/38139\/revisions\/41615"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.w3webschool.com\/blog\/wp-json\/wp\/v2\/media\/38143"}],"wp:attachment":[{"href":"https:\/\/www.w3webschool.com\/blog\/wp-json\/wp\/v2\/media?parent=38139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.w3webschool.com\/blog\/wp-json\/wp\/v2\/categories?post=38139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.w3webschool.com\/blog\/wp-json\/wp\/v2\/tags?post=38139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}