What information does NetFlow capture, according to the material?

### Why this is right NetFlow captures information about where traffic originates, where it goes, and how much traffic is involved. The material identifies it as a traffic-analysis option developed by Cisco. ### The concept Network traffic analysis can use different levels of detail. Full-packet capture records complete packets and is useful for detailed analysis but can be costly. NetFlow provides traffic-flow information without being described as a full copy of packet contents, making it an effective alternative for some analyses. ### The other options - **B. Every complete packet's contents and all endpoint file changes.** Full-packet capture records packet contents, while endpoint file changes are EDR telemetry. - **C. Only sensitive data stored in cloud services.** This describes a possible DLP concern, not NetFlow's traffic summary. - **D. Only user reports of suspicious email.** User reports are human detection signals, not network-flow records. ### Terms - **NetFlow**: A network traffic recording method that captures traffic origin, destination, and amount. ### Remember NetFlow summarizes traffic flows; full-packet capture records packet contents.