What does network analysis primarily focus on?

Network analysis primarily focuses on analyzing and interpreting network traffic. This process involves monitoring and evaluating the data packets that traverse a network to understand its performance, identify potential issues, and detect any security threats or vulnerabilities. By examining various aspects of the traffic, such as flow patterns, bandwidth usage, and anomalies, network analysts can assess the overall health of the network and ensure its efficiency and security.

The other options involve different areas of IT and security management. Collecting data from non-volatile storage relates more to data recovery or forensic analysis rather than the real-time assessment of network performance. Creating user training programs focuses on educating users about security practices instead of directly analyzing network activity. Assessing physical security measures pertains to the security of the physical environment in which network devices are located, rather than the network traffic itself. Thus, the primary focus of network analysis remains on understanding and interpreting the flow of data across the network.