Which of the following ports are MOST commonly used to interactively configure a networking device? (Select TWO).

The correct answer is B. 22 C. 23. SSH (Secure Shell) on port 22 and Telnet on port 23 are both remote terminal protocols used to interactively log in to and configure networking devices such as routers and switches. Telnet (port 23) is older and sends data in plaintext, making it insecure. SSH (port 22) is the…

Network operations

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(42 responses)

A
2% (1)
B
90% (38)
D
2% (1)
E
5% (2)

Explanation

SSH (Secure Shell) on port 22 and Telnet on port 23 are both remote terminal protocols used to interactively log in to and configure networking devices such as routers and switches. Telnet (port 23) is older and sends data in plaintext, making it insecure. SSH (port 22) is the modern, encrypted replacement and is strongly preferred. Port 21 is FTP, port 53 is DNS, and port 67 is DHCP - none of these provide an interactive command-line configuration session.

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#SSH#Telnet#network device management#port numbers

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