Which connection method allows administrators to perform remote command-line management of network devices over an IP network while encrypting both the authentication process and all session data end-to-end?
Telnet
SSH
Console (serial) connection
Web-based GUI
Secure Shell (SSH) creates an encrypted tunnel between the management workstation and the network device. This protects login credentials and subsequent command traffic from eavesdropping or tampering. Telnet sends data in plaintext, the console port does not traverse the IP network, and a browser-based GUI may or may not encrypt traffic depending on configuration but is not inherently command-line oriented.
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