CompTIA Security+ Question A-89

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

Answer: A

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).