CCNA: Cisco Certified Network Associate — Question 304

Which protocol requires authentication to transfer a backup configuration file from a router to a remote server?

Answer options

• A. FTP
• B. SMTP
• C. TFTP
• D. DTP

Correct answer: A

Explanation

FTP is the correct answer because it requires authentication to establish a connection before transferring files. In contrast, TFTP does not require authentication, making it less secure for such operations, while SMTP is used for email transmission, and DTP is related to VLAN trunking and not file transfers.