Which email infrastructure component is responsible for receiving inbound emails from external domains and placing them into the correct individual user's mailbox storage? MCQ with Answer and Explanation

Which email infrastructure component is responsible for receiving inbound emails from external domains and placing them into the correct individual user's mailbox storage?
A. MUA (Mail User Agent)
B. MDA (Mail Delivery Agent)
C. MIME encoder block
D. DNS Resolver
Answer: Option B
Solution (By JKSSB Mock Tests)
The Mail Delivery Agent (MDA) accepts messages handed down from mail transport systems and writes them directly into the recipient's localized mailbox storage.

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Which structural part of an email address uniquely identifies the specific inbox owner within a particular hosting provider's domain platform?
A. The mail exchange header string
B. The domain extension (.org/.com)
C. The IP address trace configuration
D. The local part (username preceding the @ sign)

Correct Answer: Option D


Explanation:
An email address consists of a local part (identifying the user mailbox) followed by the '@' sign and the domain host name.

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Which type of software vulnerability involves an attacker injecting malicious scripts into trusted websites, which are then executed by unsuspecting client web browsers?
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B. SQL Injection
C. Denial of Service (DoS)
D. Cross-Site Scripting (XSS)

Correct Answer: Option D


Explanation:
Cross-Site Scripting (XSS) is a security vulnerability where malicious script blocks are injected into reliable web templates, running malicious scripts directly inside client browsers.

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Which parameter indicates a 'URL encoding' or 'Percent-encoding' mechanism's primary purpose?
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This question belongs to: Computer Internet and Web Technologies