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42 interview questionsfor developers (2024)

Test your developer skills before an interview with 42 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

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42 questions
Medium
2 votes243 runs0 comment

What is the best practice to apply in your code to improve the performance of your application?

Back-end developer
performance
gzip
Vincent Cotroat Nov 15, 2023
Easy
1 vote689 runs0 comment

Which class is used to create custom events in Node.js?

Back-end developer
classes
events
Léoat Mar 28, 2022
Easy
1 vote686 runs0 comment

What types of databases can a node.js application access?

Back-end developer
databases
node.js
Léoat Mar 28, 2022
Easy
1 vote685 runs0 comment

What is NPM?

Back-end developer
package manager
npm
Léoat Mar 28, 2022
Easy
1 vote639 runs0 comment

How to start a NodeJS server

Back-end developer
node
server
Vincent Cotroat May 18, 2022
Easy
1 vote344 runs1 comment

Node.js is a Javascript execution "runtime" based on V8 engine

Back-end developer
javascript
runtime
Dragon parfaitat Jun 8, 2023
Easy
1 vote289 runs0 comment

Write a Node.js code that emits an event and logs it to the console.

Back-end developer
events
node.js
Axelat Sep 5, 2023
Easy
1 vote284 runs0 comment

Is it generally acceptable to store unencrypted passwords in a database if that database requires an access password?

Back-end developer
security
database
Léoat Mar 28, 2022
Easy
0 vote728 runs2 comments

What is the purpose of a controller in an Express application?

Back-end developer
express
controllers
Léoat Mar 28, 2022
Easy
0 vote706 runs0 comment

Install a NPM package via CLI

Back-end developer
cli
npm
Léoat Mar 28, 2022
Medium
0 vote705 runs0 comment

Start a REPL session on Node.js

Back-end developer
repl
node
Léoat Mar 28, 2022
Easy
0 vote695 runs0 comment

In which request header is a token usually sent?

Back-end developer
headers
authorization
Léoat Mar 28, 2022
Easy
0 vote695 runs1 comment

Check if a string is a valid IP address in NodeJS

Back-end developer
node.js
functions
Léoat Mar 28, 2022
Easy
0 vote695 runs0 comment

What does npm mean?

Back-end developer
package manager
npm
Léoat Mar 28, 2022
Easy
0 vote689 runs0 comment

When can a CORS error occur?

Back-end developer
cors
errors
Léoat Mar 28, 2022
Easy
0 vote683 runs0 comment

What is the name of the JavaScript API that allows you to manipulate the content of a page?

Back-end developer
javascript
api
Léoat Mar 28, 2022
Easy
0 vote665 runs0 comment

What does an HTTP code of 200 typically represent?

Back-end developer
http
status code
Léoat Mar 28, 2022
Easy
0 vote602 runs0 comment

How to get Node.js?

Back-end developer
download
nodejs
Léoat Mar 28, 2022
Easy
0 vote510 runs0 comment

How to see the different commands of npm?

Back-end developer
npm
commands
Léoat Mar 28, 2022
Hard
0 vote322 runs0 comment

Display the operating system platform in NodeJS

Back-end developer
os
console
Léoat Mar 28, 2022