What is the main function of a web proxy? MCQ with Answer and Explanation

Question
What is the main function of a web proxy?
A. To cache web pages and forward requests
B. To encrypt web traffic
C. To provide web hosting
D. To block malicious websites
Answer: Option A
Solution (By JKSSB Mock Tests)
A web proxy acts as an intermediary between clients and servers, often used for caching, filtering, or anonymity.
This question belongs to: Computer Internet and Web Technologies
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Practice More Internet and Web Technologies Questions

Question #1
Which component of an email system acts as an electronic address directory mapping domains to their specific incoming mail handling servers?
A. DNS MX (Mail Exchanger) Records
B. FTP Configuration List
C. HTML Base Templates
D. HTTP Response Headers
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Correct Answer: Option A

Explanation:
MX (Mail Exchanger) records are configurations inside the Domain Name System (DNS) specifying which mail servers are designated to accept incoming emails for a domain.
This question belongs to: Computer Internet and Web Technologies
Question #2
Which of the following is an example of a web protocol for pushing notifications from server to client?
A. WebSocket
B. All of the above
C. Web Push API
D. Server-Sent Events
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Correct Answer: Option B

Explanation:
Web Push API, SSE, and WebSocket all enable server-to-client notifications, though they differ in implementation and use cases.
This question belongs to: Computer Internet and Web Technologies
Question #3
Which of the following is a characteristic of a WebSocket?
A. It is based on HTTP/2
B. It provides full-duplex communication over a single TCP connection
C. It uses a new port for each message
D. It is a request-response protocol
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Correct Answer: Option B

Explanation:
WebSocket enables two-way interactive communication between a client and server over a single persistent connection, unlike HTTP which is half-duplex.
This question belongs to: Computer Internet and Web Technologies
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