SY0-301 · Question #674
Which of the following secure file transfer methods uses port 22 by default?
The correct answer is B. SFTP. SFTP (SSH File Transfer Protocol) operates over SSH and uses port 22 by default for secure file transfers.
Question
Which of the following secure file transfer methods uses port 22 by default?
Options
- AFTPS
- BSFTP
- CSSL
- DS/MIME
How the community answered
(28 responses)- A4% (1)
- B96% (27)
Why each option
SFTP (SSH File Transfer Protocol) operates over SSH and uses port 22 by default for secure file transfers.
FTPS (FTP Secure) uses port 21 for the control connection and wraps FTP in SSL/TLS, not SSH on port 22.
SFTP is a file transfer protocol built on top of the SSH protocol, which natively uses port 22, providing encryption and authentication for all data in transit. This is distinct from FTP with SSL/TLS (FTPS), which uses port 21.
SSL is a cryptographic protocol, not a file transfer method, and does not define a file transfer port on its own.
S/MIME is a standard for encrypting and signing email messages, not a file transfer protocol.
Concept tested: SFTP default port and SSH-based file transfer
Source: https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml
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