{"id":38570,"date":"2026-02-02T16:41:34","date_gmt":"2026-02-02T11:11:34","guid":{"rendered":"https:\/\/www.w3webschool.com\/blog\/?p=38570"},"modified":"2026-03-14T18:11:18","modified_gmt":"2026-03-14T12:41:18","slug":"node-js-interview-questions","status":"publish","type":"post","link":"https:\/\/www.w3webschool.com\/blog\/node-js-interview-questions\/","title":{"rendered":"Top 20+ Node JS Interview Questions and Answers"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"38570\" class=\"elementor elementor-38570\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0d795cf elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"0d795cf\" 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-110a8c0\" data-id=\"110a8c0\" 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-33a8b35 elementor-widget elementor-widget-html\" data-id=\"33a8b35\" 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        Node JS 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\">Node JS 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           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}\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-6da1ccf elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6da1ccf\" 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-0a2c40f\" data-id=\"0a2c40f\" 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-08f23ec elementor-toc--content-ellipsis elementor-widget elementor-widget-table-of-contents\" data-id=\"08f23ec\" 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__08f23ec\" 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-be14266\" data-id=\"be14266\" 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-c10371d elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"c10371d\" 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-beeec38\" data-id=\"beeec38\" 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-5739e95 elementor-widget elementor-widget-image\" data-id=\"5739e95\" 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\/02\/Node-JS-Interview-Questions-Answers.png\" class=\"attachment-full size-full wp-image-41617 lazyload\" alt=\"Node JS Interview Questions &amp; Answers\" data-srcset=\"https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers.png 2240w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers-300x169.png 300w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers-1100x619.png 1100w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers-768x432.png 768w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers-1536x864.png 1536w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers-2048x1152.png 2048w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers-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\/02\/Node-JS-Interview-Questions-Answers.png\" class=\"attachment-full size-full wp-image-41617 lazyload\" alt=\"Node JS Interview Questions &amp; Answers\" srcset=\"https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers.png 2240w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers-300x169.png 300w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers-1100x619.png 1100w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers-768x432.png 768w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers-1536x864.png 1536w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers-2048x1152.png 2048w, https:\/\/www.w3webschool.com\/blog\/wp-content\/uploads\/2026\/02\/Node-JS-Interview-Questions-Answers-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-ddc6618 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"ddc6618\" 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 fastest-growing web development industry, then you must practice Node JS interview questions and\u00a0 successfully crack interviews.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">Node.js has become one of the fastest-growing backend technologies these days. From tech start-ups to big companies, Node JS developers are actively hired for building highly scalable applications. <\/span><\/p><p>In this article, I have prepared a list of 20+ most common Node JS interview questions for freshers and explained them in a very simple manner. This guide will help you throughout your career journey and lead to the best career opportunities.\u00a0<\/p><p>Let\u2019s practice the questions below and become ready for the future web development industry.\u00a0<\/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-824fda0 elementor-widget elementor-widget-html\" data-id=\"824fda0\" 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>Node JS Interview<\/span><\/div>\r\n        <p>\r\n          Download the <strong>2026 Updated Node JS 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=\"41621\" class=\"elementor elementor-41621\" data-elementor-post-type=\"elementor_library\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b1aa1e0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b1aa1e0\" 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-b21bb31\" data-id=\"b21bb31\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap 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value=\"38570\"\/>\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-300364d elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"300364d\" 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-ed71888\" data-id=\"ed71888\" 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-f093056 elementor-widget elementor-widget-heading\" data-id=\"f093056\" 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 Node JS Interviews?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-668a253 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"668a253\" 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 commonly used to make fast, real-time and highly scalable web applications such as APIs, streaming platforms, chat applications, and different types of microservices. Hiring managers test your skills and knowledge of asynchronous programming, NPM system, performance optimization, and event-based architecture.\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-49090ee elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"49090ee\" 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 prepare for the Node JS interview in advance, it will help you.<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Get a clear understanding of core Node JS concepts.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Perform better than others and stand out as a perfect candidate.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Confidently answer the questions citing real-project experience.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Give an outstanding performance in both the technical and HR rounds.\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-4cbc374 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"4cbc374\" 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-373082a\" data-id=\"373082a\" 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-8e513f3 elementor-widget elementor-widget-heading\" data-id=\"8e513f3\" 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\">Most Common Node JS Interview Questions for Freshers<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9708e43 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"9708e43\" 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;\">Without proper practice and preparation, you can\u2019t crack interviews and land your dream job. So, it\u2019s better to explore and practice some of the most common Node JS interview questions.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">Take a look at the top 20+ most common Node JS interview questions and answers to boost your knowledge and self-confidence before the real interview. Let\u2019s increase the chances of getting hired in top companies.\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-e44760e elementor-widget elementor-widget-heading\" data-id=\"e44760e\" 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\">Q1. 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-3e828fa elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"3e828fa\" 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 enables JavaScript to run on the server side using 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-0a4838d elementor-widget elementor-widget-heading\" data-id=\"0a4838d\" 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\">Q2. Why is Node JS more popular than other backend technologies like PHP and Java?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e59d99e elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"e59d99e\" 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;\">Some common reasons for popularity are;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>NPM ecosystem:<\/b><span style=\"font-weight: 400;\"> Node Package Manager offers 50,000+ bundles to assist developers in boosting the development process.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Unified codebase:<\/b><span style=\"font-weight: 400;\"> One single code is used for both the client and server-side, boosting the synchronization process.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Fast performance:<\/b><span style=\"font-weight: 400;\"> Node JS is popular for its speed handling for input output tasks.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Microservices Architecture Support:<\/b><span style=\"font-weight: 400;\"> Node JS supports scalable and lightweight microservices with faster API integration.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Real-time applications:<\/b><span style=\"font-weight: 400;\"> It manages real-time features, including live updates and chats, with its performance-driven architecture.\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-a667779 elementor-widget elementor-widget-heading\" data-id=\"a667779\" 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\">Q3. What is NPM?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-76db113 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"76db113\" 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;\">NPM refers to the Node Package Manager that manages each module and package for a Node JS. The key functions are;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Online package management and installation:<\/b><span style=\"font-weight: 400;\"> NPM has a central repository to install, update, and remove external code libraries.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Publishing and code sharing:<\/b><span style=\"font-weight: 400;\"> It enables developers to publish, share, and reuse open-source libraries easily.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Common-line utility:<\/b><span style=\"font-weight: 400;\"> It offers command-line tools to download, update, and handle project dependencies.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Security Auditing<\/b><span style=\"font-weight: 400;\">: NPM identifies issues in packages and boosts the application security.<\/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-27b074b elementor-widget elementor-widget-heading\" data-id=\"27b074b\" 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\">Q4. How to handle errors in asynchronous code with a callback function?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bbc3840 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"bbc3840\" 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;\">You must pass an error object as the first parameter to handle the Errors in the callback. If an error happens, the callback returns it immediately; otherwise, it proceeds with the outcome. This is referred to as the Error-first callback pattern.\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-b1bdcbb elementor-widget elementor-widget-heading\" data-id=\"b1bdcbb\" 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\">Q5. What are the two API functions of Node JS?\u00a0<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5ed3d82 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"5ed3d82\" 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;\">The two API functions of Node JS are;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Asynchronous Functions:<\/b><span style=\"font-weight: 400;\"> This is the non-blocking function best for performance.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Synchronous Functions:<\/b><span style=\"font-weight: 400;\"> This is the blocking function best for task simplification.<\/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-529ce74 elementor-widget elementor-widget-heading\" data-id=\"529ce74\" 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\">Q6. What do you mean by Control Flow in 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-0b0357d elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"0b0357d\" 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;\">Control flow is the order in which asynchronous operations are performed. As Node JS is event-driven and non-blocking, tasks never finish as per order. Control flow manages the promises, async, and callbacks to manage the correct order of execution.\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-8575d2a elementor-widget elementor-widget-heading\" data-id=\"8575d2a\" 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\">Q7. How do you import a module in 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-501e72a elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"501e72a\" 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;\">The \u201crequire\u201d module is used to import the external resources in Node JS. The returned result is stored in a variable using require().\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">There are two different ways to import modules, and they are;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ES Module (modern)<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">js<\/span><\/p><p><span style=\"font-weight: 400;\">Import fs from \u2018fs\u2019;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">CommonJS (default)<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">js<\/span><\/p><p><span style=\"font-weight: 400;\">Const fs = require(\u2018fs\u2019);<\/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-dea499d elementor-widget elementor-widget-heading\" data-id=\"dea499d\" 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\">Q9. What is the purpose of a V8 engine in 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-1c2d94e elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"1c2d94e\" 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;\">The major purpose of a V8 engine is to compile JavaScript code into machine code. This makes the execution process faster. This is a Google-made engine and plays a major role in Node JS performance.\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-4d1ea9d elementor-widget elementor-widget-heading\" data-id=\"4d1ea9d\" 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\">Q10. What is the purpose of the package.json file?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c51b32c elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"c51b32c\" 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;\">The key purpose of the package.json file is to store dependencies, project metadata, version information, configurations, and scripts to handle Node.js applications easily.\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-1e8c76c elementor-widget elementor-widget-heading\" data-id=\"1e8c76c\" 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\">Q11. What is REPL?\u00a0<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f03a0c5 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"f03a0c5\" 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;\">REPL in Node JS refers to Read, Eval, Print, Loop. This computing environment is similar to a shell, which is best for writing and executing code for testing and debugging.\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-8014b0e elementor-widget elementor-widget-heading\" data-id=\"8014b0e\" 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\">Q12. What is the use of \u201crequire\u201d keyword in 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-c3cc159 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"c3cc159\" 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;\">\u201crequire\u201d in Node JS is used for importing modules in Node JS. It is also responsible for importing core Node JS libraries and JSON files into a well-performing web application.\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-4540bff elementor-widget elementor-widget-heading\" data-id=\"4540bff\" 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\">Q13. What are the differences between Synchronous and Asynchronous functions?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6fd6611 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"6fd6611\" 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<ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Asynchronous Functions:<\/b><span style=\"font-weight: 400;\"> This is the non-blocking function best for performance. It also boosts scalability. Handling errors is tough here, due to the presence of callbacks, promises, and async syntax.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Synchronous Functions:<\/b><span style=\"font-weight: 400;\"> This is the blocking function best for task simplification. Errors are easily caught using try-catch blocks.\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-a3b7bac elementor-widget elementor-widget-heading\" data-id=\"a3b7bac\" 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\">Q14. Why is Node JS single-threaded?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-35cbdff elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"35cbdff\" 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 single-threaded event loop that handles multiple requests simultaneously. This helps reduce memory usage, complexity, and context switching, making applications more scalable and faster.\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-1254450 elementor-widget elementor-widget-heading\" data-id=\"1254450\" 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\">Q15. What is a callback in 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-af755f9 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"af755f9\" 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;\">A callback in Node JS refers to the function that is executed when an argument is passed to another function, and an asynchronous task is completed.<\/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-577b958 elementor-widget elementor-widget-heading\" data-id=\"577b958\" 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\">Q16. How to create a web server using an in-built HTTP module?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d831ae9 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"d831ae9\" 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;\">Steps are;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Importing the in-built \u2018http\u2019 module using \u2018require()\u2019<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Then use \u2018http.createServer()\u2019 and handle client responses and requests<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Response using \u2018res.end()\u2019 or \u2018res.write()\u2019\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Allocate a port number using \u2018server.listen()\u2019<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Running the file and assessing the server with \u2018localhost\u2019<\/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-ae90c09 elementor-widget elementor-widget-heading\" data-id=\"ae90c09\" 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\">Q17. What is event-driven programming?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-810374e elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"810374e\" 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;\">Event-driven programming refers to executing code as a response to various events like API calls, messages, and actions. This model is highly used for non-blocking tasks.\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-c25e202 elementor-widget elementor-widget-heading\" data-id=\"c25e202\" 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\">Q18. What are the different streams in 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-05130b7 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"05130b7\" 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;\">The different streams in Node JS are;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Readable stream to read data.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Writable stream is to write data.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Duplex stream is for supporting both the reading and writing tasks easily.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The transfer stream is for processing data that changes the output as per the input.<\/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-f8595aa elementor-widget elementor-widget-heading\" data-id=\"f8595aa\" 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\">Q19. What are LTS releases of Node JS?\u00a0<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-edb813e elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"edb813e\" 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;\">LTS refers to Long Term Support in Node JS fixes bugs, does security updates, and improves overall performance. The changes in the LTS version focus on NPM updates, performance updates, documentation improvements, bug fixes, and security patches.\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-762e92f elementor-widget elementor-widget-heading\" data-id=\"762e92f\" 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\">Q20. What is a test pyramid?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c71087d elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"c71087d\" 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;\">The test pyramid refers to the strategy that offers structured tests in a software project to ensure maintainability, effectiveness, and better coverage. Three levels of the test pyramid are Unit Tests (base), Integration Tests (Middle), and End-to-end Tests (Top).\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-5e6bd3f elementor-widget elementor-widget-heading\" data-id=\"5e6bd3f\" 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\">Q21. What are Promises?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f60dc93 elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"f60dc93\" 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;\">Promises refer to objects that reflect the eventual failure or completion of an asynchronous task. It addresses callback hell by offering a cleaner and more readable way to collect async operations.\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-b4f29e1 elementor-widget elementor-widget-heading\" data-id=\"b4f29e1\" 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\">Q22. What is Non-blocking and Blocking code in 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-a696afa elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"a696afa\" 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>Blocking Codes<\/i><\/b><span style=\"font-weight: 400;\"> execute the continuation and usage of a callback right after the task is complete. On the other hand, <\/span><b><i>Non-blocking<\/i><\/b> <b><i>Codes<\/i><\/b><span style=\"font-weight: 400;\"> stop the execution process till the task is done.<\/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-4460c03 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"4460c03\" 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-004fd20\" data-id=\"004fd20\" 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-a609301 elementor-widget elementor-widget-heading\" data-id=\"a609301\" 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 Node JS Interviews Faster (Pro Tips)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-275c4cf elementor-widget__width-initial srvice_list elementor-widget elementor-widget-text-editor\" data-id=\"275c4cf\" 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 want to crack interviews faster, then you must remember these pro tips;<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You should practice creating small servers and APIs.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You should be more focused on basic concepts, including event hooks, async, and modules.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You must know the fundamentals before learning different frameworks.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You should be able to explain frameworks with real project examples.\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You should make a job-ready portfolio with real project work experiences mentioned.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">This is the major reason why professional and structured training is highly popular.\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-02e7b2f elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"02e7b2f\" 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-a449306\" data-id=\"a449306\" 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-6d46317 elementor-widget elementor-widget-html\" data-id=\"6d46317\" 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>Node JS Interview<\/span><\/div>\r\n        <p>\r\n          Download the <strong>2026 Updated Node JS 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=\"41621\" class=\"elementor elementor-41621\" data-elementor-post-type=\"elementor_library\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b1aa1e0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b1aa1e0\" 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-b21bb31\" data-id=\"b21bb31\" 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-908ef00 elementor-button-align-center elementor-widget elementor-widget-form\" data-id=\"908ef00\" 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=\"Node JS QNA Form\">\n\t\t\t<input type=\"hidden\" name=\"post_id\" value=\"41621\"\/>\n\t\t\t<input type=\"hidden\" name=\"form_id\" value=\"908ef00\"\/>\n\t\t\t<input type=\"hidden\" name=\"referer_title\" value=\"20+ Node JS Interview Questions And Answers [2026 Updated]\" \/>\n\n\t\t\t\t\t\t\t<input type=\"hidden\" name=\"queried_id\" value=\"38570\"\/>\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-2c19fec elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"2c19fec\" 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-61deef4\" data-id=\"61deef4\" 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-5450fd4 elementor-widget elementor-widget-heading\" data-id=\"5450fd4\" 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 Node JS Interviews 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-7f24313 elementor-widget elementor-widget-accordion\" data-id=\"7f24313\" 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<h3 id=\"elementor-tab-title-1331\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-1331\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Q. Is Node JS used for large-scale applications?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-1331\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-1331\"><p><span style=\"font-weight: 400;\">Yes, Node JS is widely used for popular large-scale applications like PayPal, Netflix and more.\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<h3 id=\"elementor-tab-title-1332\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-1332\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Q. Is Node JS Development a good career for freshers in 2026?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-1332\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-1332\"><p><span style=\"font-weight: 400;\">Yes, Node JS development is one of the highly demanding careers for freshers due to its role in modern web applications, microservices, and APIs. <\/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<h3 id=\"elementor-tab-title-1333\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-1333\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Q. What should I prepare before a Node JS interview? <\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-1333\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-1333\"><p><span style=\"font-weight: 400;\">Before a Node JS interview, you should prepare topics including JavaScript basics, Node JS basics including REST APIs, and Asynchronous coding.\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<h3 id=\"elementor-tab-title-1334\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-1334\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Q. Are coding tests included in Node JS interviews?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-1334\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-1334\"><p><span style=\"font-weight: 400;\">Most of the companies offer coding rounds to test candidates\u2019 logic, API knowledge, and Async management skills.\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<h3 id=\"elementor-tab-title-1335\" class=\"elementor-tab-title\" data-tab=\"5\" role=\"button\" aria-controls=\"elementor-tab-content-1335\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Q. Can a fresher learn Node JS without having any previous experience in backend development?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-1335\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"5\" role=\"region\" aria-labelledby=\"elementor-tab-title-1335\"><p><span style=\"font-weight: 400;\">Yes, with basic JavaScript skills, you can learn Node JS even without a knowledge of backend development.\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<h3 id=\"elementor-tab-title-1336\" class=\"elementor-tab-title\" data-tab=\"6\" role=\"button\" aria-controls=\"elementor-tab-content-1336\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Q. Is Express JS essential for Node JS interviews?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-1336\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"6\" role=\"region\" aria-labelledby=\"elementor-tab-title-1336\"><p><span style=\"font-weight: 400;\">Most of the tech companies look for candidates with basic Express JS knowledge while hiring Node JS developers, as it is highly used these days.\u00a0<\/span><\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Q. Is Node JS used for large-scale applications?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p><span style=\\\"font-weight: 400;\\\">Yes, Node JS is widely used for popular large-scale applications like PayPal, Netflix and more.\\u00a0<\\\/span><\\\/p>\"}},{\"@type\":\"Question\",\"name\":\"Q. Is Node JS Development a good career for freshers in 2026?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p><span style=\\\"font-weight: 400;\\\">Yes, Node JS development is one of the highly demanding careers for freshers due to its role in modern web applications, microservices, and APIs. <\\\/span><\\\/p>\"}},{\"@type\":\"Question\",\"name\":\"Q. What should I prepare before a Node JS interview?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p><span style=\\\"font-weight: 400;\\\">Before a Node JS interview, you should prepare topics including JavaScript basics, Node JS basics including REST APIs, and Asynchronous coding.\\u00a0<\\\/span><\\\/p>\"}},{\"@type\":\"Question\",\"name\":\"Q. Are coding tests included in Node JS interviews?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p><span style=\\\"font-weight: 400;\\\">Most of the companies offer coding rounds to test candidates\\u2019 logic, API knowledge, and Async management skills.\\u00a0<\\\/span><\\\/p>\"}},{\"@type\":\"Question\",\"name\":\"Q. Can a fresher learn Node JS without having any previous experience in backend development?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p><span style=\\\"font-weight: 400;\\\">Yes, with basic JavaScript skills, you can learn Node JS even without a knowledge of backend development.\\u00a0<\\\/span><\\\/p>\"}},{\"@type\":\"Question\",\"name\":\"Q. Is Express JS essential for Node JS interviews?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p><span style=\\\"font-weight: 400;\\\">Most of the tech companies look for candidates with basic Express JS knowledge while hiring Node JS developers, as it is highly used these days.\\u00a0<\\\/span><\\\/p>\"}}]}<\/script>\n\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-f7366cc elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"f7366cc\" 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-f793b20\" data-id=\"f793b20\" 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-ceb11e6 elementor-widget elementor-widget-heading\" data-id=\"ceb11e6\" 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-dd91a3b elementor-widget elementor-widget-text-editor\" data-id=\"dd91a3b\" 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 interviews check your knowledge and skills of both the JavaScript core concepts and backend architecture. Don\u2019t just memorise answers. Focus on learning concepts, logic, and real-project working experience.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">Keep practicing and have an in-depth understanding to crack Node JS interviews in today&#8217;s fastest growing programming world. Mastering Node JS framework requires structured training, expert mentorship, and hands-on learning.\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-419b3a1 elementor-hidden-tablet elementor-hidden-mobile\" data-id=\"419b3a1\" 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-772b83c elementor-widget elementor-widget-html\" data-id=\"772b83c\" 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 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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 \/ Node JS Interview Questions Top 20+ Node JS 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 fastest-growing web development industry, then you must practice Node JS interview &#8230; <a title=\"Top 20+ Node JS Interview Questions and Answers\" 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