CompTIA
220-1201 · Question #242
Which of the following port numbers is used for a file transfer?
The correct answer is A. 21. Port 21 is the default TCP port for the File Transfer Protocol (FTP), which is used to establish control connections for file transfers between clients and servers.
Submitted by ravi_2018· Mar 30, 2026Networking
Question
Which of the following port numbers is used for a file transfer?
Options
- A21
- B53
- C68
- D389
How the community answered
(55 responses)- A89% (49)
- B2% (1)
- C4% (2)
- D5% (3)
Explanation
Port 21 is the default TCP port for the File Transfer Protocol (FTP), which is used to establish control connections for file transfers between clients and servers.
Topics
#Port numbers#FTP#Network protocols
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