What mechanism does a browser use to maintain persistent client-side data store pools across tabs using basic key-value pairs without expiration deadlines via JavaScript? MCQ with Answer and Explanation

Question

What mechanism does a browser use to maintain persistent client-side data store pools across tabs using basic key-value pairs without expiration deadlines via JavaScript?

A. DNS Registry Logs

B. LocalStorage

C. Session Cookies

D. RAM Buffers

Answer: Option B

Solution (By JKSSB Mock Tests)

The Web Storage API provides 'localStorage', allowing web applications to save data locally inside the user's browser with no built-in expiration timeline.

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What is the function of the 'Sent' folder inside a standard digital email workspace configuration?

A. To wipe old cookie history logs from local drives

B. To store incomplete drafts of email layouts

C. To keep a permanent historical record copy of all email messages that have been successfully transmitted to recipients

D. To hold unverified spam items safely until automatic deletion

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Correct Answer: Option C

Explanation:
The Sent folder saves copies of successfully dispatched emails, providing a historical log of your correspondence for future reference.

This question belongs to: Computer Internet and Web Technologies

Question #2

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Which of the following is a popular JavaScript library for building user interfaces?

A. Vue.js

B. All of the above

C. React

D. Angular

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Correct Answer: Option B

Explanation:
React, Angular, and Vue.js are all popular JavaScript frameworks/libraries for building front-end user interfaces.

This question belongs to: Computer Internet and Web Technologies

Question #3

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Which type of web architecture uses a 'Three-Tier' format to divide application logical structures cleanly?

A. Sender inbox, Gateway router, and Recipient junk folder

B. HTML file, CSS style script, and JavaScript dynamic loader

C. Presentation tier (Browser), Application tier (Server logic), and Data tier (Database)

D. Local router, WAN switch, and Global satellite interface

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Correct Answer: Option C

Explanation:
A standard three-tier web application architecture separates concerns into the presentation layer (UI), the application logic tier, and the database storage tier.

This question belongs to: Computer Internet and Web Technologies

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