Question 1

Explain the Node.js event loop in detail. What are the phases and how does libuv fit in?

Accepted Answer

This is a hard-difficulty Node.js interview question commonly asked at senior software engineering interviews. Study this question and practice answering it with an AI mock interview on Zavnia.

Question 2

What is the difference between process.nextTick() and setImmediate()? When would you use each?

Accepted Answer

This is a medium-difficulty Node.js interview question commonly asked at senior software engineering interviews. Study this question and practice answering it with an AI mock interview on Zavnia.

Question 3

Describe the 4 types of streams in Node.js and give a real-world use case for each.

Accepted Answer

This is a medium-difficulty Node.js interview question commonly asked at senior software engineering interviews. Study this question and practice answering it with an AI mock interview on Zavnia.

Question 4

How does Node.js clustering work? What problem does it solve and what are its limitations?

Accepted Answer

This is a hard-difficulty Node.js interview question commonly asked at senior software engineering interviews. Study this question and practice answering it with an AI mock interview on Zavnia.

Question 5

How do you detect and fix a memory leak in a Node.js production application?

Accepted Answer

This is a hard-difficulty Node.js interview question commonly asked at senior software engineering interviews. Study this question and practice answering it with an AI mock interview on Zavnia.

Question 6

Explain how Node.js module caching works with require(). Can two requires of the same file return different instances?

Accepted Answer

This is a medium-difficulty Node.js interview question commonly asked at senior software engineering interviews. Study this question and practice answering it with an AI mock interview on Zavnia.

Question 7

What is the Buffer class in Node.js and why is it needed? How does it differ from a regular JavaScript array?

Accepted Answer

This is a easy-difficulty Node.js interview question commonly asked at senior software engineering interviews. Study this question and practice answering it with an AI mock interview on Zavnia.

Question 8

Walk through async/await error handling patterns in Node.js. What happens to unhandled promise rejections?

Accepted Answer

This is a medium-difficulty Node.js interview question commonly asked at senior software engineering interviews. Study this question and practice answering it with an AI mock interview on Zavnia.

Node.js Interview Questions

Interview Questions

Explain the Node.js event loop in detail. What are the phases and how does libuv fit in?

What is the difference between process.nextTick() and setImmediate()? When would you use each?

Describe the 4 types of streams in Node.js and give a real-world use case for each.

How does Node.js clustering work? What problem does it solve and what are its limitations?

How do you detect and fix a memory leak in a Node.js production application?

Explain how Node.js module caching works with require(). Can two requires of the same file return different instances?

What is the Buffer class in Node.js and why is it needed? How does it differ from a regular JavaScript array?

Walk through async/await error handling patterns in Node.js. What happens to unhandled promise rejections?