Which of the following use the SSH protocol?

"Stelnet" is not a recognized standard protocol; Telnet is an insecure protocol, and SSH is its secure replacement, not a variant of it.

Secure Copy Protocol (SCP) is a network protocol that relies entirely on the Secure Shell (SSH) protocol for both data transfer and authentication, leveraging SSH's encryption and authentication capabilities to securely copy files between hosts.

Simple Network Management Protocol (SNMP) operates over UDP or TCP on specific ports (e.g., 161/162) and does not utilize SSH for its communication or security.

File Transfer Protocol Secure (FTPS) uses SSL/TLS (Secure Sockets Layer/Transport Layer Security) to encrypt FTP communication, rather than the SSH protocol.

Secure Sockets Layer (SSL) is a cryptographic protocol used to establish secure links between a web server and a client, but it is a distinct protocol from SSH and does not use SSH.

The SSH File Transfer Protocol (SFTP) is a network protocol that provides file access, file transfer, and file management functionalities over any reliable data stream, and it is most commonly run as a subsystem of the Secure Shell (SSH) protocol.