A new server was installed for the purpose of monitoring network traffic. The network has been configured in such a way that all traffic will be mirrored out the port this server is connected to. When reviewing the network traffic logs on the server only traffic destined to the server is listed in the logs. Which of the following is preventing the server from seeing all network traffic?
A) NIC filtering is enabled.
B) Port security is configured.
C) NIC is not in promiscuous mode.
D) NIC is in promiscuous mode.

Question

Quizplus · Accepted Answer

The NIC (Network Interface Card) must be in promiscuous mode to capture all network traffic, not just traffic destined for the server. If it's not in promiscuous mode, it will only capture traffic intended for its own MAC address.

A New Server Was Installed for the Purpose of Monitoring