Wireshark Network Analysis: The Official Wireshark Certified Network Analyst Study Guide | Laura Chappell, Gerald Combs
"Network analysis is the process of listening to and analyzing network traffic. Network analysis offers an insight into network communications to identify performance problems, locate security breaches, analyze application behavior, and perform capacity planning. Network analysis (aka "protocol analysis") is a process used by IT professionals who are responsible for network performance and security." -- p. 2.
Wireshark Network Analysis: The Official Wireshark Certified Network Analyst Study Guide | 
