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

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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. RAM Buffers

D. Session Cookies

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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Question #1

Which of the following is a common method to prevent clickjacking?

A. SameSite cookie attribute

B. Both A and B

C. Content-Security-Policy with frame-ancestors

D. X-Frame-Options header

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Correct Answer: Option B

Explanation:
Both X-Frame-Options and CSP's frame-ancestors directive can be used to control iframe embedding, preventing clickjacking.

This question belongs to: Computer Internet and Web Technologies

Question #2

What is a web browser's 'bookmark' used for?

A. To block websites

B. To save a URL for quick access later

C. To store passwords

D. To manage browsing history

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Correct Answer: Option B

Explanation:
A bookmark (or favorite) is a stored link to a web page that allows users to quickly revisit it without typing the URL again.

This question belongs to: Computer Internet and Web Technologies

Question #3

Which of the following is a type of web cookie that is deleted when the browser is closed?

A. Session cookie

B. Secure cookie

C. Third-party cookie

D. Persistent cookie

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Correct Answer: Option A

Explanation:
Session cookies (non-persistent) exist only until the browser is closed, while persistent cookies have an expiration date.

This question belongs to: Computer Internet and Web Technologies

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