Answer:
The correct answer is letter "C": network intrusion detection system (NIDS).
Explanation:
A Network Intrusion Detection System (NIDS) is a network protection system configured to spot threats in any server connected to it. The NIDS has a history of common threats that is used to filter all the data flowing through the network. If malware is identified, an alert pops up with the suggested actions to follow in front of that case.
