What happens when the command transport input ssh is entered on the switch vty lines?

What happens when the command transport input ssh is entered on the switch vty lines?

• A. All remote connections are denied.
• B. Communication is logged for security purposes.
• C. Communication is encrypted between the switch and users.
• D. Only Telnet is used for remote communication.

Answer: (C)

When the command "transport input ssh" is configured on the switch's virtual terminal (vty) lines, it specifically enables only Secure Shell (SSH) as the method of remote access. This command restricts remote connections to SSH, ensuring that all communication between the switch and users is encrypted. SSH provides a secure channel over an unsecured network by using cryptographic techniques to protect the data being transmitted. This means that sensitive information such as passwords and configuration data is transmitted securely, reducing the risk of interception by attackers. The correct understanding of this command is essential for maintaining secure management access to networking devices. In contrast, enabling only SSH prevents the use of less secure protocols, such as Telnet, which transmits data in plaintext and is vulnerable to eavesdropping.

When the command "transport input ssh" is configured on the switch's virtual terminal (vty) lines, it specifically enables only Secure Shell (SSH) as the method of remote access. This command restricts remote connections to SSH, ensuring that all communication between the switch and users is encrypted.

SSH provides a secure channel over an unsecured network by using cryptographic techniques to protect the data being transmitted. This means that sensitive information such as passwords and configuration data is transmitted securely, reducing the risk of interception by attackers.

The correct understanding of this command is essential for maintaining secure management access to networking devices. In contrast, enabling only SSH prevents the use of less secure protocols, such as Telnet, which transmits data in plaintext and is vulnerable to eavesdropping.