Why is it important to monitor computer systems and networks?

• A. To ensure security and protect against unauthorized access
• B. To increase system performance
• C. To reduce energy consumption
• D. To simplify management

Answer: (A)

Monitoring computer systems and networks provides the visibility needed to protect them. By continuously collecting logs, metrics, and events, you can detect unusual or unauthorized activity—such as failed login attempts, privilege escalations, or data transfers that don’t fit normal patterns—and respond quickly. This situational awareness is the first line of defense, enabling you to prevent breaches, contain incidents, and preserve evidence for forensics and compliance.

While monitoring can reveal performance issues, energy use, or administrative inefficiencies, the primary purpose in security practice is to reduce risk by identifying and stopping unauthorized access and policy violations. Tools like intrusion detection systems, log analyzers, and SIEMs help automate detection, alerting, and investigation, making monitoring central to maintaining secure and trustworthy systems.