Which port is used for IMAP?

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Prepare for the Certified Ethical Hacker Version 11 Exam with a comprehensive test featuring flashcards and multiple choice questions, each accompanied by hints and explanations to ensure a thorough understanding. Ace your ethical hacking exam with confidence!

Multiple Choice

Which port is used for IMAP?

Explanation:
IMAP relies on a reliable, connection-oriented transport, so it uses TCP. The standard port assigned for IMAP is 143, which is why that option is the best choice. Using TCP ensures ordered delivery and data integrity, which are essential for mailbox access and message retrieval. (For secure IMAP, IMAPS runs over TCP port 993.) The other ports shown belong to different services: LDAP typically uses 389, SNMP uses 161, and ISAKMP (IKE) uses 500 UDP.

IMAP relies on a reliable, connection-oriented transport, so it uses TCP. The standard port assigned for IMAP is 143, which is why that option is the best choice. Using TCP ensures ordered delivery and data integrity, which are essential for mailbox access and message retrieval. (For secure IMAP, IMAPS runs over TCP port 993.) The other ports shown belong to different services: LDAP typically uses 389, SNMP uses 161, and ISAKMP (IKE) uses 500 UDP.

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