Question 870
Following remediation at a regional data center, engineers revisit: After a legacy protocol is replaced, its application override remains above normal classification rules for the same destination. Which observation would BEST prove the specific issue is resolved?
Explanation
Correct Answer
The current service is natively classified and receives the expected threat inspection. This evidence directly tests the intended corrective action: Remove the obsolete override and validate current App-ID behavior for the replacement application. It confirms the failure mechanism—Stale override rules can suppress identification for successor applications.—has been addressed in the actual affected flow.
Incorrect Answers
Test service sessions show the intended classification and policy evaluation. This would verify resolution of a different case: A cloud deployment needs an application override for one supported internal legacy service but no custom application object exists for the override target. It does not show that the reported issue was fixed or that its intended action—Remove the obsolete override and validate current App-ID behavior for the replacement application.—worked.
Test traffic remains appropriately classified and inspected without the broad bypass. This would verify resolution of a different case: An operator assumes application override preserves all application-layer threat scanning and uses it to bypass a false positive security event. It does not show that the reported issue was fixed or that its intended action—Remove the obsolete override and validate current App-ID behavior for the replacement application.—worked.
Only the legacy app receives override classification; normal web traffic retains native App-ID. This would verify resolution of a different case: An application override rule matches all TCP traffic to a shared server rather than only a legacy protocol port, hiding unrelated web applications from normal App-ID. It does not show that the reported issue was fixed or that its intended action—Remove the obsolete override and validate current App-ID behavior for the replacement application.—worked.