CompTIA A+ Certification Exam 220-1001 Practice Test 8

The term "Intrusion Detection System" (IDS) refers to a device or software application designed to detect malicious activities and violations of security policies on a network or computer host. An IDS designed to monitor networks is known as Network Intrusion Detection System (NIDS), an IDS installed on a host monitoring only that host is called Host Intrusion Detection System (HIDS). IDSs do not take any active steps to prevent or stop the intrusion relying only on passive response which may include sending an alert to a management console or saving information about the event in logs.