Which standard port is used by default by the IMAP protocol for secure, encrypted email communication (IMAPS)? MCQ with Answer and Explanation

Which standard port is used by default by the IMAP protocol for secure, encrypted email communication (IMAPS)?
A. 143
B. 465
C. 993
D. 995
Answer: Option C
Solution (By JKSSB Mock Tests)
While port 143 is default for unencrypted IMAP, port 993 is the standard allocated port for secure IMAP (IMAPS) over SSL/TLS.

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Practice More Internet and Web Technologies Questions

Question #1
Which specific protocol operates inside email infrastructures to provide secure, encrypted message transfers between independent mail servers over port 465 or 587?
A. POP3 server frameworks
B. HTTP unencrypted standards
C. SMTPS / Secure SMTP
D. IMAP protocol loops

Correct Answer: Option C


Explanation:
Secure SMTP variants utilize cryptographic SSL/TLS layers to encrypt email transmissions between mail servers, preventing eavesdropping and data tampering.

This question belongs to: Computer Internet and Web Technologies
Question #2
Which specific protocol operates at the Transport Layer of the TCP/IP stack to guarantee reliable, ordered, and error-checked delivery of stream data over web connections?
A. IP
B. UDP
C. TCP
D. ICMP

Correct Answer: Option C


Explanation:
TCP (Transmission Control Protocol) provides reliable, connection-oriented packet deliveries, ensuring all data segments arrive intact and in sequential order.

This question belongs to: Computer Internet and Web Technologies
Question #3
What does a '500 Internal Server Error' message from a web address generally represent?
A. A general-purpose error indicating that the server encountered an unexpected condition that prevented it from fulfilling the request.
B. The user entered an incorrect account password.
C. The client computer has disconnected from its router box.
D. The specific webpage directory structure was typed incorrectly.

Correct Answer: Option A


Explanation:
The 500 status code is a generic catch-all server-side error showing that the web server ran into a script configuration or system conflict preventing normal execution.

This question belongs to: Computer Internet and Web Technologies