Question

An intrusion detection system uses ______ to analyze a network. it can _______ if it senses an issue.

1) firewalls, block the traffic
2) antivirus software, remove the threat
3) network traffic analysis, detect anomalies
4) encryption, secure the data

Answer 1

An intrusion detection system analyzes a network using network traffic analysis to detect anomalies. It is focused on monitoring and alerting rather than blocking traffic, which is generally the role of an Intrusion Prevention System.

Step-by-step explanation:

An intrusion detection system (IDS) uses network traffic analysis to analyze a network. It can detect anomalies if it senses an issue. IDS are designed to monitor network traffic for suspicious activity and issues alerts when such activity is detected. Unlike firewalls, which block traffic based on pre-determined security rules, IDS simply alert on potential threats that could indicate a cyber attack or security breach. Some systems are also capable of taking actions when potential threats are detected, such as blocking traffic, though this would generally fall under the purview of an Intrusion Prevention System (IPS).