Question 230
Following remediation at a research campus, engineers revisit: A datacenter denies all east-west traffic based on broad zones, unintentionally disrupting a necessary monitored backup application. Which observation would BEST prove the specific issue is resolved?
Explanation
Correct Answer
Only required backup transfers succeed and unauthorized lateral flows remain denied. This evidence directly tests the intended corrective action: Create a narrow high-priority permit for the documented backup App-ID and destination, with security profiles, above the segment deny. It confirms the failure mechanism—Broad segmentation policy needs explicit reviewed exceptions for business dependencies.—has been addressed in the actual affected flow.
Incorrect Answers
Only the approved payroll application connects and unrelated web services to that host remain blocked. This would verify resolution of a different case: A production Security policy permits the general web-browsing application to an internal payroll server instead of specifying the business application. It does not show that the reported issue was fixed or that its intended action—Create a narrow high-priority permit for the documented backup App-ID and destination, with security profiles, above the segment deny.—worked.
The legitimate management session succeeds with the prescribed threat inspection/logging. This would verify resolution of a different case: A policy permits a documented remote administration application but lacks the required anti-spyware profile despite explicit endpoint-control policy. It does not show that the reported issue was fixed or that its intended action—Create a narrow high-priority permit for the documented backup App-ID and destination, with security profiles, above the segment deny.—worked.
The safe denied flow remains blocked and its rule and traffic disposition are observable without claiming payload inspection. This would verify resolution of a different case: A team expects a Security profile to inspect traffic blocked by a deny rule, but the incident report shows no content inspection of dropped packets. It does not show that the reported issue was fixed or that its intended action—Create a narrow high-priority permit for the documented backup App-ID and destination, with security profiles, above the segment deny.—worked.