What ports do ftp file transfer protocol and sftp secure she - CompTIA-N10-009
Question
What ports do FTP (File Transfer Protocol) and SFTP (Secure SHell File Transfer Protocol) utilize?
Answers
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correct
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Explanation
Correct Answer: B. 21, 22
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FTP (File Transfer Protocol):
- Ports 20 and 21:
- Port 21: Used as the command/control channel for FTP.
- Port 20: Used as the data transfer channel (for active mode FTP).
- While Port 21 is primarily used for control, Port 20 is involved only in certain FTP modes. However, in this context, Port 21 is the standard control channel for FTP.
- Ports 20 and 21:
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SFTP (SSH File Transfer Protocol):
- Port 22: SFTP runs over SSH (Secure Shell) and uses Port 22 for secure data transmission.
Why the other options are incorrect:
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22, 23:
- Port 22 is correct for SFTP, but Port 23 is used for Telnet, not FTP.
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21, 23:
- Port 21 is correct for FTP, but Port 23 is again for Telnet, not SFTP.
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20, 21:
- While these ports are both associated with FTP (Port 21 for control, Port 20 for data in active mode), this option does not account for SFTP, which uses Port 22.
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