Network Defense Essentials (NDE) Practice Exam

Which practice is essential for maintaining security in a virtualized environment?

1. Monitoring network traffic at all times

2. Allowing all internal users unlimited access

3. Disabling security updates to avoid downtimes

4. Using only one OS for all virtual machines

The correct answer is: Monitoring network traffic at all times

Monitoring network traffic at all times is crucial for maintaining security in a virtualized environment because it helps detect and respond to potential threats in real-time. In a virtualized setting, where multiple virtual machines (VMs) run on shared resources, monitoring network traffic allows administrators to observe interactions between VMs and identify any unusual behavior that could indicate a security breach. This practice helps mitigate risks such as unauthorized access, data exfiltration, and lateral movement within the network. By continuously monitoring for suspicious activity, administrators can quickly respond to incidents, protecting the integrity and confidentiality of the virtual machines and the data they handle. In addition, it provides insights into network performance, which is vital for maintaining an effective and efficient virtual environment. Ensuring constant vigilance through network traffic monitoring is a proactive approach to security, keeping potential vulnerabilities in check and establishing a strong defense posture in a dynamic and complex virtual landscape.