Intrusion detection systems (IDSs) help detect system and network attacks. If you're planning on taking the Security+ exam, you should understand how they detect attacks. For example, can you answer this sample question ?
Q. A HIDS reported a vulnerability on a system using an assigned vulnerability identification number. After researching the number on the vendor’s web site, you identify the recommended solution and begin applying it. What type of HIDS is in use? A. Network-based B. Signature-based C. Heuristic-based D. Anomaly-based