Which of the following options provides an accurate description of a 'Web Browser Extension' or 'Add-on'? MCQ with Answer and Explanation

Which of the following options provides an accurate description of a 'Web Browser Extension' or 'Add-on'?

A. A piece of hardware that boosts wireless internet signals

B. A dedicated database table used to archive old email attachments

C. The main operational routing server used by a global ISP facility

D. A small custom software component that adds specific features, tools, or modifications to a web browser's core interface

Answer: Option D

Solution (By JKExamLibrary)

Browser extensions are modular software components built on web standards that install directly into the browser to extend its functionality, such as adding ad blockers or translation tools.

This question belongs to: Computer Internet and Web Technologies

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What does the 'Content-Security-Policy' (CSP) HTTP response header instruct a web browser to enforce?

A. To wipe local device browser cache modules automatically

B. To restrict the specific trusted domains from which a webpage can load scripts, styles, and assets, protecting against Cross-Site Scripting (XSS) injections

C. To double the physical data processing capacity of network router cards

D. To route incoming text emails through unencrypted FTP pathways

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Correct Answer: Option B

Explanation:
CSP is an effective security layer that allows site administrators to declare approved sources of content, preventing browsers from executing unauthorized or malicious scripts.

This question belongs to: Computer Internet and Web Technologies

Question #2 Report Error

What is the primary operational distinction of a 'Web Server' compared to a traditional 'Database Server'?

A. A web server is responsible for allocating local IP configurations dynamically.

B. A web server processes HTTP requests to deliver web page content; a database server manages structured data tables.

C. A web server is purely a physical hardware chip; a database server is software.

D. A web server reads incoming email files exclusively via POP3 paths.

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Correct Answer: Option B

Explanation:
Web servers (like Apache or Nginx) listen for HTTP requests to deliver HTML and web assets to browsers, while database servers (like MySQL or Oracle) store and query raw tabular data collections.

This question belongs to: Computer Internet and Web Technologies

Question #3 Report Error

What is the function of the 'User-Agent' string sent inside an HTTP request header to a remote web server?

A. To specify the physical routing coordinates of the local ISP link

B. To identify the specific browser application, version, and operating system of the client to the server

C. To check local hardware device temperature metrics

D. To transmit the user's encrypted master system password

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Correct Answer: Option B

Explanation:
The User-Agent header string acts as a technical badge, telling the web server what browser software and operating system the client is using so it can tailor content compatibility.

This question belongs to: Computer Internet and Web Technologies

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