Which protocol is used for sending email between mail servers? MCQ with Answer and Explanation

Question
Which protocol is used for sending email between mail servers?
A. MIME
B. IMAP
C. POP3
D. SMTP
Answer: Option D
Solution (By JKSSB Mock Tests)
SMTP is used for email transmission both from clients to servers and between servers for relaying messages.
This question belongs to: Computer Internet and Web Technologies
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Question #1
What is the purpose of the 'User-Agent' header in HTTP requests?
A. To authenticate the user
B. To specify the preferred language
C. To provide the user's IP address
D. To identify the client software making the request
Discuss
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Correct Answer: Option D

Explanation:
The User-Agent header allows the server to identify the type of browser, operating system, and version, enabling content adaptation.
This question belongs to: Computer Internet and Web Technologies
Question #2
What mechanism does an online payment web application implement over HTTPS routes to substitute sensitive credit card numbers with secure, randomized reference tokens during financial transactions?
A. Running outbound SMTP mail server delivery routines
B. Static FTP file catalog adjustments
C. Tokenization
D. Altering localized device hardware MAC address registries
Discuss
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Correct Answer: Option C

Explanation:
Tokenization swaps sensitive primary account numbers with algorithmic token strings, protecting original financial data from interception during online payment processing.
This question belongs to: Computer Internet and Web Technologies
Question #3
What is the purpose of the 'Session' in web applications?
A. To handle form submissions
B. To manage database connections
C. To store static files
D. To maintain state across multiple requests from the same user
Discuss
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Correct Answer: Option D

Explanation:
A session is a server-side storage that persists user-specific data (like login status) across requests, using cookies or URL rewriting.
This question belongs to: Computer Internet and Web Technologies
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