While troubleshooting a recurring problem on your network, you will want to examine the TCP messages being exchanged between a server and a client. Which tool should you use?

Wireshark

Explanation:

Wireshark is a free tool used to troubleshoot a network it was named wireshark in 2006 from ethereal due to trademark issues, it is especially used for examining the information exchange between the server and the client. You can analyze and read live data on different types of network. Wireshark is an important tool for network admins, QA engineers, developers, etc.