CompTIA
SY0-301 · Question #494
SY0-301 Question #494: Real Exam Question with Answer & Explanation
The correct answer is B: 22. Port 22 is used by SFTP and SCP, both of which tunnel file transfer operations over SSH to provide encrypted, authenticated file transfers between UNIX systems.
Question
Which of the following ports is used to securely transfer files between remote UNIX systems?
Options
- A21
- B22
- C69
- D445
Explanation
Port 22 is used by SFTP and SCP, both of which tunnel file transfer operations over SSH to provide encrypted, authenticated file transfers between UNIX systems.
Common mistakes.
- A. Port 21 is used by FTP (File Transfer Protocol), which transmits data and credentials in plaintext and provides no encryption.
- C. Port 69 is used by TFTP (Trivial File Transfer Protocol), which has no authentication or encryption and is primarily used for network booting scenarios.
- D. Port 445 is used by SMB/CIFS for Windows file sharing and is not associated with file transfers between UNIX systems.
Concept tested. SFTP/SCP secure file transfer over SSH port 22
Reference. https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml
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