Node JS Interview Masterclass Top 200 Questions (PDF)(2025)(1)

体系课

课程简介

这门课解决什么痛点 Node.js 后端开发岗位的面试，往往存在一个明显的断层：候选人能熟练手写业务逻辑，但在面对运行时原理、事件循环机制或内存泄漏排查时，却显得底气不足。这道题不是「会不会用框架」，而是「懂不懂底层」。这份资料专门针对这一痛点，整理并解析了 200 个高频面试题，旨在帮助学习者从「只会调用 API」跨越到「理解 Node.js 核心运行机…

已有 0 人浏览发布 2026-10-17 更新 2026-10-21

这门课解决什么痛点

Node.js 后端开发岗位的面试，往往存在一个明显的断层：候选人能熟练手写业务逻辑，但在面对运行时原理、事件循环机制或内存泄漏排查时，却显得底气不足。这道题不是「会不会用框架」，而是「懂不懂底层」。这份资料专门针对这一痛点，整理并解析了 200 个高频面试题，旨在帮助学习者从「只会调用 API」跨越到「理解 Node.js 核心运行机制」。

它不仅仅是一份问答列表，更像是一本考前突击指南。对于正在准备中级及以上后端岗位面试的开发者来说，这些题目覆盖了从基础数据类型在 V8 中的存储，到集群模式的负载均衡策略，再到异步编程的演进历程。它的核心价值在于帮你快速识别知识盲区，让你在面试官追问「为什么」的时候，能够给出有深度、有逻辑的回答，而不是停留在表面。

适合什么基础，建议先看哪几块

本课程适合具备一定 JavaScript 基础，且已经接触过 Node.js 实际开发的初学者或进阶者。如果你完全没写过服务端代码，直接看这道题可能会感到吃力，因为很多答案默认你已经理解原型链、闭包和模块系统。但如果你已经有半年以上的实战经验，却感觉自己「知其然不知其所以然」，那么这份资料非常对口。

建议的学习顺序并非从头到尾死记硬背，而是采取「测试-补缺」的策略。首先，你可以快速浏览题目，遮住答案自测一下，标记出那些「听说过但不确定细节」的知识点。重点攻克前 50 道关于 JavaScript 基础与 Node.js 核心的题目，这里涉及 Event Loop 的五阶段时序、libuv 的作用以及流（Stream）的处理方式，这是面试的重灾区。随后，再深入探讨数据库连接池、权限控制和安全漏洞等工程化问题。最后，针对集群模式和高并发场景的题目进行专项突破，这部分往往是区分初级与高级开发者的关键。

学完能独立做什么，资料怎么配合练习

系统消化这套资料后，你将能够独立完成 Node.js 面试中的技术深挖环节。具体表现为：能够清晰地绘制并解释事件循环的工作流程，能够诊断简单的内存泄漏场景，能够阐述微服务架构下 Node.js 的性能优化手段。更重要的是，你建立了一套完整的后端知识体系框架，不再碎片化地记忆知识点。

为了最大化学习效果，建议将这份 PDF 作为「检索工具」而非「教材」使用。不要试图一次性读完，而是结合自己的项目经验。每当你遇到一个技术点，先去资料里找对应的题目，尝试用自己的话复述答案，再对比标准解析。如果遇到不懂的概念，立即查阅官方文档或深入阅读源码，形成「题目引导-原理探究-实践验证」的闭环。同时，建议你准备一个笔记本，记录下自己容易混淆的易错点，比如 `process.nextTick` 与 `setImmediate` 的执行顺序差异，这些细节往往是面试中的决胜点。

Node JS Interview Masterclass Top 200 Questions (PDF)(2025)(1)

课程目录

1 - Course Introduction and Structure/
1 -Course Structure (PDF books attached in resources).srt
1 -Course Structure (PDF books attached in resources)_en.srt
1 -Node-Code.zip
1 -Top-200-Node-Interview-Questions-pdf.pdf
10 - Express - Routing - II/
1 -Express - Routing - II.srt
1 -Express - Routing - II_en.srt
2 -Q57. What are Router object & Router Methods and how to implement them.srt
2 -Q57. What are Router object & Router Methods and how to implement them_en.srt
3 -Q58. What are the types of Router Methods.srt
3 -Q58. What are the types of Router Methods_en.srt
4 -Q59. What is the difference between app.get() and router.get() method.srt
4 -Q59. What is the difference between app.get() and router.get() method_en.srt
5 -Q60. What is express.Router() in Express.js.srt
5 -Q60. What is express.Router() in Express.js_en.srt
6 -Q61. Share a real application use of Routing.srt
6 -Q61. Share a real application use of Routing_en.srt
7 -Q62. What is Route Chaining in Express.js.srt
7 -Q62. What is Route Chaining in Express.js_en.srt
8 -Q63. What is Route Nesting in Express.js.srt
8 -Q63. What is Route Nesting in Express.js_en.srt
9 -Q64. How to implement route nesting in Express.js.srt
9 -Q64. How to implement route nesting in Express.js_en.srt
11 - Express - Template Engines/
1 -Express - Template Engines.srt
1 -Express - Template Engines_en.srt
2 -Q65. What are Template Engines in Express.js.srt
2 -Q65. What are Template Engines in Express.js_en.srt
3 -Q66. Name some Template Engines libraries.srt
3 -Q66. Name some Template Engines libraries_en.srt
4 -Q67. How to implement EJS templating engine in a Express.js application.srt
4 -Q67. How to implement EJS templating engine in a Express.js application_en.srt
12 - REST API - Basics/
1 -REST API - Basics.srt
1 -REST API - Basics_en.srt
2 -Q68. What is REST & RESTful API.srt
2 -Q68. What is REST & RESTful API_en.srt
3 -Q69. What are HTTP Request and Response structures in UI and REST API.srt
3 -Q69. What are HTTP Request and Response structures in UI and REST API_en.srt
4 -Q70. What are Top 5 REST guidelines and the advantages of them.srt
4 -Q70. What are Top 5 REST guidelines and the advantages of them_en.srt
5 -Q71. What is the difference between REST API and SOAP API.srt
5 -Q71. What is the difference between REST API and SOAP API_en.srt
13 - REST API - HTTP Methods & Status Codes/
1 -REST API - HTTP Methods & Status Codes.srt
1 -REST API - HTTP Methods & Status Codes_en.srt
2 -Q72. What are HTTP Verbs and HTTP methods.srt
2 -Q72. What are HTTP Verbs and HTTP methods_en.srt
3 -Q73. What are GET, POST, PUT & DELETE HTTP methods.srt
3 -Q73. What are GET, POST, PUT & DELETE HTTP methods_en.srt
4 -Q74. What is the difference between PUT & PATCH methods.srt
4 -Q74. What is the difference between PUT & PATCH methods_en.srt
5 -Q75. Explain the concept of Idempotence in RESTful APIs.srt
5 -Q75. Explain the concept of Idempotence in RESTful APIs_en.srt
6 -Q76. What are the role of status codes in RESTful APIs.srt
6 -Q76. What are the role of status codes in RESTful APIs_en.srt
14 - REST API - CORS, Serialization, Deserialization, Others/
1 -REST API - CORS, Serialization, Deserialization, Others.srt
1 -REST API - CORS, Serialization, Deserialization, Others_en.srt
2 -Q77. What is CORS in RESTful APIs.srt
2 -Q77. What is CORS in RESTful APIs_en.srt
3 -Q78. How to remove CORS restrictions RESTful APIs.srt
3 -Q78. How to remove CORS restrictions RESTful APIs_en.srt
4 -Q79. What are Serialization & Deserialization.srt
4 -Q79. What are Serialization & Deserialization_en.srt
5 -Q80. What are the types of serialization.srt
5 -Q80. What are the types of serialization_en.srt
6 -Q81. How to Serialize & Deserialize in Node.js.srt
6 -Q81. How to Serialize & Deserialize in Node.js_en.srt
7 -Q82. Explain the concept of versioning in RESTful APIs.srt
7 -Q82. Explain the concept of versioning in RESTful APIs_en.srt
8 -Q83. What is an API document What are the popular documentation formats.srt
8 -Q83. What is an API document What are the popular documentation formats_en.srt
9 -Q84. What is the typical structure of a REST API project in Node.srt
9 -Q84. What is the typical structure of a REST API project in Node_en.srt
15 - REST API - Authentication & Authroization/
1 -REST API - Authentication & Authorization.srt
1 -REST API - Authentication & Authorization_en.srt
10 -Q93. What are the parts of JWT token.srt
10 -Q93. What are the parts of JWT token_en.srt
11 -Q94. Where JWT token reside in the request.srt
11 -Q94. Where JWT token reside in the request_en.srt
2 -Q85. What are Authentication and Authorization.srt
2 -Q85. What are Authentication and Authorization_en.srt
3 -Q86. What are the types of authentication in Node.js.srt
3 -Q86. What are the types of authentication in Node.js_en.srt
4 -Q87. What is Basic Authentication.srt
4 -Q87. What is Basic Authentication_en.srt
5 -Q88. What are the security risks associated with storing passwords.srt
5 -Q88. What are the security risks associated with storing passwords_en.srt
6 -Q89. What is the role of Hashing and Salt in securing passwords.srt
6 -Q89. What is the role of Hashing and Salt in securing passwords_en.srt
7 -Q90. How can we securely hash passwords in Node.js.srt
7 -Q90. How can we securely hash passwords in Node.js_en.srt
8 -Q91. What is API Key Authentication.srt
8 -Q91. What is API Key Authentication_en.srt
9 -Q92. What is Token based and JWT authentication.srt
9 -Q92. What is Token based and JWT authentication_en.srt
16 - Error Handling & Debugging/
1 -Error Handling & Debugging.srt
1 -Error Handling & Debugging_en.srt
2 -Q95. Error Handling In how many ways you can do error handling in Node.js.srt
2 -Q95. Error Handling In how many ways you can do error handling in Node.js_en.srt
3 -Q96. How to handle errors in synchronous operations using try-catch-finally.srt
3 -Q96. How to handle errors in synchronous operations using try-catch-finally_en.srt
4 -Q97. What is Error-First Callbacks.srt
4 -Q97. What is Error-First Callbacks_en.srt
5 -Q98. How to handle errors using Promises.srt
5 -Q98. How to handle errors using Promises_en.srt
6 -Q99. How to handle errors while using async-await.srt
6 -Q99. How to handle errors while using async-await_en.srt
7 -Q100. How can you Debug Node.js applications.srt
7 -Q100. How can you Debug Node.js applications_en.srt
17 - Security, Performance & Deployment/
1 -Security, Performance & Deployment.srt
1 -Security, Performance & Deployment_en.srt
2 -Q101. What is XSS (Cross-Site Scripting) attack.srt
2 -Q101. What is XSS (Cross-Site Scripting) attack_en.srt
3 -Q102. How to prevent XSS attacks What is sanitize-html module.srt
3 -Q102. How to prevent XSS attacks What is sanitize-html module_en.srt
4 -Q103. What is SQL Injection attack.srt
4 -Q103. What is SQL Injection attack_en.srt
5 -Q104. How do you prevent SQL injection attacks in Node.srt
5 -Q104. How do you prevent SQL injection attacks in Node_en.srt
6 -Q105. How can you improve the performance of a Node.js application.srt
6 -Q105. How can you improve the performance of a Node.js application_en.srt
7 -Q106. How can you Deploy a Node.js application.srt
7 -Q106. How can you Deploy a Node.js application_en.srt
18 - Testing & Web Socket/
1 -Testing & Web Socket.srt
1 -Testing & Web Socket_en.srt
2 -Q107. What is Testing What are the types of testing.srt
2 -Q107. What is Testing What are the types of testing_en.srt
3 -Q108. What are testing frameworks.srt
3 -Q108. What are testing frameworks_en.srt
4 -Q109. How to create unit tests using Jest framework.srt
4 -Q109. How to create unit tests using Jest framework_en.srt
5 -Q110. How to write code for Unit Testing Explain AAA.srt
5 -Q110. How to write code for Unit Testing Explain AAA_en.srt
6 -Q111. What is Test-Driven Development (TDD).srt
6 -Q111. What is Test-Driven Development (TDD)_en.srt
7 -Q112. What is WebSocket How to create a real-time chat application using Node.srt
7 -Q112. What is WebSocket How to create a real-time chat application using Node_en.srt
19 - MongoDB - Basics/
1 -MongoDB - Basics.srt
1 -MongoDB - Basics_en.srt
2 -Q113. What is MongoDB.srt
2 -Q113. What is MongoDB_en.srt
3 -Q114. What is NoSQL.srt
3 -Q114. What is NoSQL_en.srt
4 -Q115. What is the difference between NoSQL & RDBMS.srt
4 -Q115. What is the difference between NoSQL & RDBMS_en.srt
5 -Q116. When to use RDBMS and when to use NoSQL DB in your applications.srt
5 -Q116. When to use RDBMS and when to use NoSQL DB in your applications_en.srt
6 -Q117. What are Documents and Collections in NoSQL.srt
6 -Q117. What are Documents and Collections in NoSQL_en.srt
7 -Q118. What are the advantages of NoSQL over RDBMSSQL databases.srt
7 -Q118. What are the advantages of NoSQL over RDBMSSQL databases_en.srt
8 -Q119. What are the dis-advantages of NoSQL as comparison to RDBMS databases.srt
8 -Q119. What are the dis-advantages of NoSQL as comparison to RDBMS databases_en.srt
2 - Node.js Basics/
1 -Node.js - Basics.srt
1 -Node.js - Basics_en.srt
2 -Q1. What is Node.js.srt
2 -Q1. What is Node.js_en.srt
3 -Q2. How Node is a runtime environment on server side What is V8.srt
3 -Q2. How Node is a runtime environment on server side What is V8_en.srt
4 -Q3. What is the difference between Runtime environment & Framework.srt
4 -Q3. What is the difference between Runtime environment & Framework_en.srt
5 -Q4. What is the difference between Node.js & Express.js.srt
5 -Q4. What is the difference between Node.js & Express.js_en.srt
6 -Q5. What are the differences between Client-Side(Browser) & Server-Side(Node.js).srt
6 -Q5. What are the differences between Client-Side(Browser) & Server-Side(Node.js)_en.srt
20 - MongoDB - Setup & CRUD operations in Node.js/
1 -MongoDB - Setup & CRUD operations in Node.js.srt
1 -MongoDB - Setup & CRUD operations in Node.js_en.srt
10 -Q128. How to delete a record in MongoDB via Node.js.srt
10 -Q128. How to delete a record in MongoDB via Node.js_en.srt
11 -Q129. How to insert, select, update&delete multiple records in MongoDB.srt
11 -Q129. How to insert, select, update&delete multiple records in MongoDB_en.srt
2 -Q120. What is the difference between MongoDB Server and MongoDB Database.srt
2 -Q120. What is the difference between MongoDB Server and MongoDB Database_en.srt
3 -Q121. How to install and run MongoDB server What is MongoDB compass.srt
3 -Q121. How to install and run MongoDB server What is MongoDB compass_en.srt
4 -Q122. How to create database and a collection in MongoDB server.srt
4 -Q122. How to create database and a collection in MongoDB server_en.srt
5 -Q123. What are CRUD operations in MongoDB.srt
5 -Q123. What are CRUD operations in MongoDB_en.srt
6 -Q124. How to Connect to MongoDB server from Node.js application.srt
6 -Q124. How to Connect to MongoDB server from Node.js application_en.srt
7 -Q125. How to create insert a record in MongoDB via Node.js.srt
7 -Q125. How to create insert a record in MongoDB via Node.js_en.srt
8 -Q126. How to read select a record in MongoDB via Node.js.srt
8 -Q126. How to read select a record in MongoDB via Node.js_en.srt
9 -Q127. How to update a record in MongoDB via Node.js.srt
9 -Q127. How to update a record in MongoDB via Node.js_en.srt
21 - MongoDB - Query operators, Indexes, Others/
1 -MongoDB - Query operators, Indexes, Others.srt
1 -MongoDB - Query operators, Indexes, Others_en.srt
2 -Q130. What are Query Operators in MongoDB.srt
2 -Q130. What are Query Operators in MongoDB_en.srt
3 -Q131. Compare Query Operators in SQL & MongoDB.srt
3 -Q131. Compare Query Operators in SQL & MongoDB_en.srt
4 -Q132. How to implement comparison operators.srt
4 -Q132. How to implement comparison operators_en.srt
5 -Q133. What are in, nin, exists, and, or, regex, not query operators in MongoDB.srt
5 -Q133. What are in, nin, exists, and, or, regex, not query operators in MongoDB_en.srt
6 -Q134. What is projection in MongoDB How to implement it.srt
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