Cisco Cyber Security Practice Exam

In response to unauthorized access, which system is essential for monitoring and responding?

1. Firewall

2. Network Access Control (NAC)

3. Intrusion Detection and Prevention Systems (IDPS)

4. Content filtering systems

The correct answer is: Intrusion Detection and Prevention Systems (IDPS)

The essential system for monitoring and responding to unauthorized access is the Intrusion Detection and Prevention System (IDPS). IDPS plays a critical role in cybersecurity by continuously monitoring network traffic and system activities for signs of malicious behavior or policy violations. When unauthorized access is attempted, an IDPS can detect anomalies and suspicious patterns. It not only identifies potential threats but also takes action to prevent these intrusions from succeeding. For instance, upon detecting suspicious activity that indicates an unauthorized access attempt, the IDPS can raise alerts for security personnel and may also implement predefined responses, such as blocking the malicious IP address or severing the connection. This proactive capability is vital for maintaining the integrity and security of the network, as timely responses to threats can mitigate damage and prevent data breaches. Other systems, while valuable in their own right—like firewalls, which control incoming and outgoing network traffic; Network Access Control (NAC), which manages device access; and content filtering, which blocks unwanted content—do not primarily focus on real-time monitoring and reaction to intrusions in the same way an IDPS does. Therefore, the IDPS is a cornerstone of a robust cybersecurity strategy, particularly for responding to unauthorized access.