1000+ Node JS MCQ Interview Questions

Preparing for Node JS interviews can be intimidating — especially when you're expected to know everything from the event loop to Express internals and security best practices. This course helps you prepare smartly, not just quickly. With a strong focus on MCQ-based interview questions, this course is designed to simulate real interview patterns used by top tech companies.You’ll cover a wide spectrum of Node JS concepts — from understanding asynchronous behavior and memory management, to working with file systems and creating secure REST APIs. Each question in this course is carefully explained with deep technical insight, so you not only get the right answer but understand the “why” behind it.We also include common mistakes and traps engineers fall into — such as callback hell, blocking code in event loop, improper error handling, and middleware misuse — so you can avoid them during interviews and on the job.By the end of this course, you will:Be prepared for both junior and mid-level Node JS interviewsDevelop confidence in answering tricky backend questionsUnderstand Node internal behavior, not just surface syntaxWhether you’re a student or an industry professional switching stacks, this course is your step-by-step guide to acing Node JS interviews.Topics Included Are :.I. Fundamentals of Node and JavaScript (Beginner to Intermediate)1. Node and its RuntimeDifficulty: Beginner to Intermediate | Questions: 25-30Event LoopPhases order (timers, pending callbacks, idle/prepare, poll, check, close callbacks) - High PriorityMicrotasks vs. Macrotasks execution order - High Priorityprocess.nextTick() vs. setImmediate() - High Priority