To answer this question, we need to understand what AppSensor is and what it is commonly used for.
AppSensor is a popular application-based intrusion detection system (IDS). It is designed to detect and respond to malicious activities or attacks targeting an application. AppSensor works by monitoring various application-level events and user behaviors, such as login attempts, input validation failures, and access patterns.
Now, let's go through each option to understand why it is correct or incorrect:
Option A) Web Application Firewall (WAF) - This option is incorrect because AppSensor is not a web application firewall. A WAF is a security control that is placed between a web application and the client to filter and monitor HTTP traffic.
Option B) Application-based Intrusion Detection - This option is correct because AppSensor is indeed a popular application-based intrusion detection system. It focuses on detecting and responding to attacks targeting an application.
Option C) Database Monitoring - This option is incorrect because AppSensor does not specifically focus on monitoring databases. While it can monitor certain application-level events related to database interactions, its primary function is to detect and respond to application-level attacks.
Option D) Virtual Private LAN (VLAN) - This option is incorrect because AppSensor is not related to virtual private LANs. VLANs are used to logically separate a network into smaller segments.
The correct answer is B) Application-based Intrusion Detection. This option is correct because AppSensor is a popular application-based intrusion detection system that helps in detecting and responding to attacks targeting an application.