If an organization were to deploy only one Intrusion Detection System (IDS) sensor to protect its information system from the Internet:
Correct Answer: B
Explanation/Reference:
Explanation:
Network Intrusion Detection Systems (NIDS) are placed at a strategic point, such as between the internet- facing router and the firewall, within the network to monitor traffic to and from all devices on the network.
Incorrect Answers:
A: A host-based IDS is an IDS that is installed on a single computer and can monitor the activities on that computer only.
C: It is better to place the IDS between the DMZ and the internet.
D: A host-based IDS is an IDS that is installed on a single computer and can monitor the activities on that computer only.
References:
https://en.wikipedia.org/wiki/Intrusion_detection_system