What is the operational goal of a web browser's 'JavaScript Engine' (such as Google's V8 engine inside Chrome)? MCQ with Answer and Explanation

Question
What is the operational goal of a web browser's 'JavaScript Engine' (such as Google's V8 engine inside Chrome)?
A. To manage physical fiber optic cable transmissions
B. To route incoming email attachments through proxy servers
C. To parse, interpret, compile, and execute JavaScript code scripts rapidly into machine instructions natively within the browser client
D. To render structural CSS layout designs cleanly
Answer: Option C
Solution (By JKSSB Mock Tests)
The JavaScript engine is a specialized component that executes interactive client-side programming code, dynamically modifying the webpage UI based on user actions.
This question belongs to: Computer Internet and Web Technologies
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Question #1
What mechanism does an internet connection setup implement to compress large structural web data payloads (like HTML, CSS, JS text) on the fly during transit to reduce bandwidth consumption?
A. Static FTP directory link configurations
B. Altering local device MAC address registry entries
C. Gzip / Brotli Compression algorithms
D. Running outbound SMTP email server scripts
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Correct Answer: Option C

Explanation:
Gzip and Brotli are compression algorithms utilized by web servers to reduce the size of text assets before sending them over the network, speeding up page load times for client browsers.
This question belongs to: Computer Internet and Web Technologies
Question #2
Which protocol offers a lightweight, connectionless transmission method that prioritizes speed over data arrival validation, often used for online live video streaming?
A. UDP
B. HTTP
C. TCP
D. POP3
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Correct Answer: Option A

Explanation:
UDP (User Datagram Protocol) is a connectionless transport protocol that transmits data packets rapidly without setting up an overhead verification connection, ideal for real-time streams.
This question belongs to: Computer Internet and Web Technologies
Question #3
What is the purpose of a 'Sitemap' (typically packaged as sitemap.xml) uploaded onto a website's root domain space?
A. To store backup email attachments
B. To explicitly detail the architectural directory list of URLs to assist search engine crawlers in indexing the site thoroughly
C. To encrypt user password data structures safely
D. To display a geographic satellite view map of the server facility layout
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Correct Answer: Option B

Explanation:
A sitemap.xml file acts as an architectural guide for web crawlers, listing available site URLs so search engines can efficiently map out and discover pages.
This question belongs to: Computer Internet and Web Technologies
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