You should try to be brief but highly descriptive in the subject line
By giving wrong answers or cheating I guess
Answer:
The kind of software to use is a protocol analyser.
Explanation:
The Protocol analyser, which could either be a hardware or a software is a tool that is used for capturing and analysing signals and also interpreting network traffic over a communication channel or between two or more connected computer systems
Protocol analysers can be used to find out location of problems on Local Area Network by examining flow of traffic.