300-320 Question #27: Real Exam Question with Answer & Explanation

The correct answer is B: SSH, because the username and password are encrypted. In-band management means managing network devices over the same production network infrastructure. Because management traffic (including login credentials) traverses the shared network, it is critical to protect it from eavesdropping. SSH (Secure Shell) encrypts the entire sessio

Question

Which protocol is used in an in-band network and why?

Options

AUDP, because it is connectionless
BSSH, because the username and password are encrypted
CTelnet, because the username and password are sent in clear
DMSDP, because it uses TCP as its transport protocol

Explanation

In-band management means managing network devices over the same production network infrastructure. Because management traffic (including login credentials) traverses the shared network, it is critical to protect it from eavesdropping. SSH (Secure Shell) encrypts the entire session, including the username and password, making it the appropriate protocol for in-band management. Telnet (C) transmits credentials in plain text-anyone on the network can capture them with a packet sniffer. UDP (A) is a transport protocol, not a management application protocol, and provides no encryption. MSDP (D) is a multicast routing protocol, not a device management protocol.

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