Free JSNSD Mock Exam – Practice Online Confidently

Increase your chances of passing the Linux Foundation JSNSD exam questions on your first try. Practice with our free online JSNSD exam mock test designed to help you prepare effectively and confidently.

Exam Code: JSNSD
Exam Questions: 320
OpenJS Node.js Services Developer
Updated: 02 Apr, 2026
Question 1

What is the difference between Stored XSS and DOM-based XSS?

Options :
Answer: A

Question 2

Which middleware is commonly used for parsing JSON in Express.js?

Options :
Answer: B

Question 3

What does the acronym REST stand for?

Options :
Answer: A

Question 4

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

Options :
Answer: A

Question 5

Which type of attack is most commonly mitigated by input sanitization?

Options :
Answer: B

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