Which of the following is BEST used to capture and analyze network traffic between hosts on the
same network segment?

A.
Protocol analyzer

B.
Router

C.
Firewall

D.
HIPS

Explanation:
A Protocol Analyzer is a hardware device or more commonly a software program used to capture
network data communications sent between devices on a network. Capturing and analyzing the
packets sent from two systems that are not communicating properly could help determine the
cause of the issue.
Well known software protocol analyzers include Message Analyzer (formerly Network Monitor)
from Microsoft and Wireshark (formerly Ethereal).