Question 310
An analyst wants to know which internal host sent the most traffic to an unfamiliar external address, without recording full packet contents. Which data source is most efficient?
Explanation
Correct Answer
Flow metadata summarizes endpoints, ports, bytes and timing without full payload capture. For this case, an analyst wants to know which internal host sent the most traffic to an unfamiliar external address, without recording full packet contents. Risk terms answer different questions: likelihood and loss estimate exposure, treatment changes the exposure, and authorized management accepts the residual risk. The competing choice “Complete application source code history” addresses a different mechanism: source changes do not measure actual external traffic volume. That difference is material to the requested decision.
Incorrect Answers
Source changes do not measure actual external traffic volume. Log, flow, endpoint and event sources observe different aspects of activity; reliable detection requires the right telemetry, context and timestamps. Here the decisive fact is an analyst wants to know which internal host sent the most traffic to an unfamiliar external address, without recording full packet contents. “NetFlow or equivalent network flow records” matches that requirement because flow metadata summarizes endpoints, ports, bytes and timing without full payload capture.
Door events cannot summarize network conversations. Telemetry provides evidence and may trigger a response; it does not automatically deny a transaction or remediate its cause. In the reported situation, an analyst wants to know which internal host sent the most traffic to an unfamiliar external address, without recording full packet contents. The effective mechanism is “NetFlow or equivalent network flow records”: flow metadata summarizes endpoints, ports, bytes and timing without full payload capture.
Key escrow is unrelated to source/destination traffic statistics. Encryption addresses readability of protected data. Authentication, correct permissions and availability must still be enforced separately. Here the decisive fact is an analyst wants to know which internal host sent the most traffic to an unfamiliar external address, without recording full packet contents. “NetFlow or equivalent network flow records” matches that requirement because flow metadata summarizes endpoints, ports, bytes and timing without full payload capture.






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