In which two ways should the Secure File Transfer Protocol (SFTP) be used on a Cisco router? (Choose two )
A. SFTP must be manually enabled on the Cisco router
B. SFTP supports the full security and authentication functionality of SSH
C. SSH must be enabled on the device first before you use SFTP
D. The server does the encryption and decryption of data for data security
E. SFTP offers a subset of FTP functionality
