What is SFTP and what is a common command to retrieve a file from a remote server?

• A. Secure File Transfer Protocol; get filename
• B. Simple File Transfer Protocol; get filename
• C. SSH File Transfer Protocol; put filename
• D. Secure File Transfer Protocol; delete filename

Answer: (A)

SFTP is a secure way to transfer files over SSH, protecting both the data and the authentication process. When you want to fetch a file from a remote server in an SFTP session, you use the get command followed by the filename, which downloads the file to your local machine. For example, after connecting with sftp user@host, you would run get filename to retrieve it. The other choices don’t fit: the Simple File Transfer Protocol isn’t a standard protocol used here, put would upload a file to the server, and delete would remove a remote file rather than fetch one.