Port 22 is used for SFTP (Secure File Transfer Protocol) and SCP (Secure Copy Protocol), which encrypt file transfers using SSH (Secure Shell). This ensures data is transmitted securely over the network.
*Why not the other options?
*Port 69 (B) - TFTP (Trivial File Transfer Protocol): Transfers files but is not secure (no encryption).
*Port 80 (C) - HTTP: Used for web traffic, not for file transfer.
*Port 3389 (D) - RDP (Remote Desktop Protocol): Used for remote desktop access, not file transfer.
Reference:
CompTIA Network+ (N10-009) Official Guide - Chapter 5: Network Protocols and Ports