CompTIA
220-801 · Question #645
220-801 Question #645: Real Exam Question with Answer & Explanation
The correct answer is B: 110. Port 110 is assigned to POP3 (Post Office Protocol version 3), the standard protocol used by mail clients to retrieve incoming email messages from a mail server.
Question
A standard Internet mail account receives incoming messages on which of the following ports?
Options
- A80
- B110
- C143
- D443
Explanation
Port 110 is assigned to POP3 (Post Office Protocol version 3), the standard protocol used by mail clients to retrieve incoming email messages from a mail server.
Common mistakes.
- A. Port 80 is assigned to HTTP and is used for unencrypted web traffic, not email retrieval.
- C. Port 143 is assigned to IMAP (Internet Message Access Protocol), which is an alternative incoming mail protocol that keeps messages on the server rather than downloading them.
- D. Port 443 is assigned to HTTPS and is used for TLS-encrypted web traffic, not email.
Concept tested. POP3 protocol and port 110 for incoming email
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