CompTIA
N10-009 · Question #599
Which of the following ports is used to transfer data between mail exchange servers?
The correct answer is B. 25. Port 25 is used by SMTP for server-to-server email transfer between mail exchange servers.
Submitted by haru.x· Mar 6, 2026Networking Concepts
Question
Which of the following ports is used to transfer data between mail exchange servers?
Options
- A21
- B25
- C53
- D69
How the community answered
(31 responses)- A6% (2)
- B90% (28)
- C3% (1)
Explanation
Port 25 is used by SMTP for server-to-server email transfer between mail exchange servers.
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