Final answer:
The most commonly used method for monitoring network traffic in DoD installations is the Network Intrusion Detection System (NIDS), not proprietary station monitoring.
Step-by-step explanation:
Proprietary station monitoring is not the method used most by DoD installations. The most commonly used method is called Network Intrusion Detection System (NIDS).
NIDS is an automated system that monitors network traffic to detect and respond to suspicious activities and potential security breaches. It analyzes data packets in real-time to identify patterns of behavior that indicate unauthorized access or malicious activity.
Unlike proprietary station monitoring, which focuses on monitoring individual workstations or devices, NIDS provides a centralized and comprehensive view of the entire network, making it more efficient and effective for DoD installations.