Which of the following provides secure access to a network device?

A.
SNMPv2

B.
FTP

C.
RSH

D.
SSH

Explanation:
Secure Shell(SSH) is a cryptographic network protocol for secure data
communication, remote command-line login, remote command execution, and other secure
network services between two networked computers that connects, via a secure channel over an
insecure network, a server and a client (running SSH server and SSH client programs,
respectively).