Networking Management

An IT Manager gets complaints from users that there is excessive delay in response over the Ethernet LAN. The manager suspects that the cause of the problem is excessive collisions on the LAN. She gathers statistics on collisions using the dot.3 stats Table and localizes the problem to a single faulty network interface card :

Answer the following question.
Q1. Explain how she localized the problem. You may use RFC 2358 to answer this exercise.
Q2. Do you feel there is any other way to solve the problem.
Q3. Explain your views on the above.