Question 1070
During follow-up testing at a hospital campus, the original fault was: A datacenter updates the public VIP for an application but leaves its DoS rule bound to the retired address object. Which measured result demonstrates recovery rather than an unrelated improvement?
Explanation
Correct Answer
A controlled SYN/UDP test to the new VIP triggers appropriate protection and the retired object is unused. This evidence directly tests the intended corrective action: Update the protected destination object and confirm match order for the new VIP. It confirms the failure mechanism—DoS policies match defined network objects and do not automatically follow service relocations.—has been addressed in the actual affected flow.
Incorrect Answers
Synthetic approved SYN load triggers mitigation while normal handshakes complete. This would verify resolution of a different case: An Internet-facing portal receives SYN floods while its DoS profile has SYN protection set to alert only. It does not show that the reported issue was fixed or that its intended action—Update the protected destination object and confirm match order for the new VIP.—worked.
A controlled load test increments expected protection counters and shows the approved action. This would verify resolution of a different case: A security administrator interprets the existence of a DoS profile as proof of enforcement although the DoS policy rule is disabled. It does not show that the reported issue was fixed or that its intended action—Update the protected destination object and confirm match order for the new VIP.—worked.
A legitimate concurrent-call test succeeds while clearly abusive traffic is constrained. This would verify resolution of a different case: An administrator enables aggressive UDP flood mitigation on a link that carries a critical real-time voice service without testing typical call peaks. It does not show that the reported issue was fixed or that its intended action—Update the protected destination object and confirm match order for the new VIP.—worked.