Which component of an email system acts as an electronic address directory mapping domains to their specific incoming mail handling servers? MCQ with Answer and Explanation

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Which component of an email system acts as an electronic address directory mapping domains to their specific incoming mail handling servers?

A. HTTP Response Headers

B. FTP Configuration List

C. HTML Base Templates

D. DNS MX (Mail Exchanger) Records

Answer: Option D

Solution (By JKExamLibrary)

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

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Which of the following is a valid email protocol used for retrieving messages from a mail server without deleting them?

A. IMAP

B. MIME

C. POP3

D. SMTP

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Correct Answer: Option A

Explanation:
IMAP (Internet Message Access Protocol) allows users to access and manage emails on the server, typically keeping messages on the server, unlike POP3 which often downloads and deletes.

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Question #2 Report Error

What mechanism does a web server implement to gracefully instruct a browser that an old web resource has changed its location permanently to a new URL address asset?

A. Issuing a general 500 Internal Error crash notification alert

B. Altering the local computer DNS router configurations

C. Issuing an HTTP 301 Moved Permanently response code with the new location header

D. Setting a temporary session tracking cookie inside memory

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Correct Answer: Option C

Explanation:
An HTTP 301 redirect informs browsers and search engines that a page has permanently relocated, prompting them to update their links and pass SEO ranking history to the new URL.

This question belongs to: Computer Internet and Web Technologies

Question #3 Report Error

What is the primary function of a web browser's 'Cookie' file storage management system?

A. To hold persistent or temporary text string data blocks used to remember session preferences and tracking profiles

B. To protect against inbound server crash sequences

C. To host background email client delivery routines

D. To compress structural HTML files to accelerate local render logic

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Correct Answer: Option A

Explanation:
Cookies allow web servers to save short strings of state or identifying data within a user's browser, enabling features like persistent shopping carts or login sessions.

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