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: Jun 06, 2025

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Question 1

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 2

What does the HTTP 410 status code represent?

A : Gone

B : Not Found

C : Method Not Allowed

D : Bad Request

Answer: A

Question 3

What is the risk of allowing unsanitized user input in a web application?

A : Increased performance

B : Injection attacks such as SQL Injection and XSS

C : Better user experience

D : Improved scalability

Answer: B

Question 4

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 5

How does custom middleware validate incoming requests in Express.js?

A : By intercepting requests in the middleware chain

B : By bypassing validation for known users

C : By directly modifying the database

D : By rejecting all POST requests

Answer: A

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Total 320 Questions | Updated On: Jun 06, 2025

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