SFTP (Secure File Transfer Protocol) operates over port 22, using SSH (Secure Shell) encryption for secure file transfers.
Breakdown of Options:
A. 22 – Correct answer. SFTP runs over SSH (port 22) for secure file transfers.
B. 80 – Used for HTTP, not SFTP.
C. 443 – Used for HTTPS (secure web traffic).
D. 3389 – Used for RDP (Remote Desktop Protocol).
[Reference:, CompTIA Network+ (N10-009) Official Study Guide – Domain 3.1: Compare and contrast network protocols., RFC 4253: SSH Transport Layer Protocol, , , , , , , , , ]
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