Which port is used for IMAP?

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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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