What is the purpose of using Secure Shell (SSH)?

• A. To transfer files via FTP
• B. To secure web traffic with TLS
• C. To perform remote graphical desktop sharing
• D. To securely log in to a remote server

Answer: (D)

SSH provides an encrypted channel for securely accessing a remote machine. Its main purpose is to log in to a remote server and run commands, with the session’s credentials and data protected from eavesdropping and tampering. It supports strong authentication, often using public/private keys, and everything you type or receive is encrypted throughout the session. While SSH can also be used for transferring files (via SCP or SFTP) or for forwarding graphical applications in some setups, the core function is secure remote login and command execution. The other options describe different protocols or use cases—FTP for file transfer, TLS for securing web traffic, and remote desktop solutions—none of which capture the primary intent of SSH.