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 09, 2025

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Question 1

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

Question 2

Which technique can complement rate limiting to prevent abuse?

A : IP Address Whitelisting

B : Disabling authentication requirements.

C : Logging all user activities without limits.

D : Allowing unlimited access to APIs.

Answer: A

Question 3

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

A : Stored XSS works on the server, while DOM-based XSS works on the client-side DOM

B : Stored XSS manipulates the DOM, while DOM-based XSS is stored in the database

C : Stored XSS and DOM-based XSS are the same

D : DOM-based XSS involves SQL queries

Answer: A

Question 4

What does 'Promise.race()' return?

A : The result of the first settled promise

B : The results of all settled promises

C : The fastest resolved promise only

D : An error if any promise fails

Answer: A

Question 5

What happens if the Secure flag is not set on a cookie?

A : The cookie can be sent over insecure HTTP connections.

B : The cookie cannot be accessed by client-side scripts.

C : The cookie is encrypted by default.

D : The cookie is only accessible to the server.

Answer: A

Page: 1 / 64

Total 320 Questions | Updated On: Sep 09, 2025

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