Free Linux Foundation JSNSD Exam Questions

Become Linux Foundation Certified with updated JSNSD exam questions and correct answers

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Total 320 Questions | Updated On: Sep 24, 2026

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Question 1

What is the purpose of dependency security?

A : To ensure dependencies are free from vulnerabilities.

B : To improve the performance of the application.

C : To encrypt data transmitted between dependencies.

D : To manage access control for dependencies.

Answer: A

Question 2

What can custom middleware in Express.js do?

A : Log request details

B : Modify request or response objects

C : Terminate the request-response cycle

D : All of the above

Answer: D

Question 3

Which middleware is required to parse JSON request bodies in Express.js?

A : body-parser

B : express.json

C : express.urlencoded

D : json-parser

Answer: B

Question 4

What is validator.js commonly used for in web applications?

A : Database migrations

B : Input validation

C : File uploads

D : Authentication

Answer: B

Question 5

What does the '.catch()' method do in a promise chain?

A : Handles rejected promises

B : Handles resolved promises

C : Runs after all promises are settled

D : Creates a new promise

Answer: A

Page: 1 / 64

Total 320 Questions | Updated On: Sep 24, 2026

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