Which TCP port is used to connect to a network device by using Telnet?

The correct answer is A. 23. Telnet uses TCP port 23. This is a well-known, IANA-assigned port. Port 69 is used by TFTP (Trivial File Transfer Protocol). Port 400 is not assigned to a common network management protocol. Port 830 is used by NETCONF over SSH. Telnet provides unencrypted remote command-line…

Network Fundamentals

Question

Options

A23
B69
C400
D830

How the community answered

(27 responses)

A
89% (24)
B
4% (1)
C
7% (2)

Explanation

Telnet uses TCP port 23. This is a well-known, IANA-assigned port. Port 69 is used by TFTP (Trivial File Transfer Protocol). Port 400 is not assigned to a common network management protocol. Port 830 is used by NETCONF over SSH. Telnet provides unencrypted remote command-line access to network devices, which is why it has largely been replaced by SSH (port 22) in modern networks.

Topics

#Telnet#TCP Ports#Network Protocols#Remote Access

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