Question 920
At a manufacturing complex in Detroit, engineers report that a distribution ACL denies a single application port despite successful ICMP traces. The work affects production and maintenance endpoints. Which post-change observation is the strongest acceptance evidence?
Explanation
Correct Answer
This observation tests the Layer-three routing and application path troubleshooting requirement at a manufacturing complex in Detroit. The expected result is that trace or packet captures confirm the intended routed path and positive/negative application reachability tests agree with policy. The necessary correction is to compare client gateway, switch route tables and end-to-end policy/log evidence before changing the application itself; a saved configuration alone would not prove it is working. In this case, the observed fault is that a distribution ACL denies a single application port despite successful ICMP traces.
Incorrect Answers
At a manufacturing complex in Detroit, this would verify AirMatch RF power and channel optimization, not the failure reported in this scenario. The requested closure criterion instead concerns Layer-three routing and application path troubleshooting: trace or packet captures confirm the intended routed path and positive/negative application reachability tests agree with policy.
At a manufacturing complex in Detroit, the observation may be useful for a separate WLAN association, authentication and DHCP triage test, but it does not establish that a distribution ACL denies a single application port despite successful ICMP traces has been resolved. The relevant check is the Layer-three routing and application path troubleshooting outcome.
At a manufacturing complex in Detroit, this would verify Physical/link layer diagnosis and interface counters, not the failure reported in this scenario. The requested closure criterion instead concerns Layer-three routing and application path troubleshooting: trace or packet captures confirm the intended routed path and positive/negative application reachability tests agree with policy.