Palo Alto Networks (PANW) Certified Cybersecurity Entry-level Technician (PCCET) Practice Exam

Which IDS/IPS system uses a database of known vulnerabilities to identify intrusion attempts?

1. Knowledge-based

2. Behavior-based

3. Intuitive-based

4. Standards-based

The correct answer is: Knowledge-based

The knowledge-based IDS/IPS system leverages a database of known vulnerabilities and signatures to detect intrusion attempts. This type of system refers to a method of identifying threats based on predefined patterns or rules related to previously identified attack signatures. By having a comprehensive database that catalogs these known vulnerabilities, it can effectively compare incoming network traffic or activity against these signatures to identify suspicious behavior. In practical terms, whenever a data packet is received, the knowledge-based system analyzes it against its database of known threats. If a match is found with any existing signature, the system can trigger an alert, logging the incident, or even taking automated actions to prevent the intrusion. This approach is particularly useful in managing well-documented and repeatable attacks. In contrast, behavior-based systems operate by establishing a baseline of normal activity and then monitoring for deviations from that baseline, rather than relying on a database of known vulnerabilities. Intuitive-based and standards-based are not commonly recognized categories when discussing IDS/IPS systems, which strengthens the case for knowledge-based being the most appropriate answer in this context.