Which of the following tools would allow Ann, the security administrator, to be able to BEST quantify all traffic on her network?

A honeypot is a decoy system designed to attract and observe attackers, not a tool for capturing or quantifying all legitimate network traffic.

A port scanner identifies open ports and services on hosts but does not capture or measure actual network traffic flows.

A protocol analyzer (also called a packet sniffer or network analyzer) captures all network traffic in real time and provides detailed breakdowns of protocols, endpoints, and traffic volumes. This gives a security administrator the most comprehensive and quantifiable view of all communications traversing the network. No other listed tool provides this level of full-traffic visibility.

A vulnerability scanner probes systems for known security weaknesses but does not monitor or quantify real-time network traffic.