Question 140
Following an incident at a hospital campus, the WLAN team documented this condition: A hospital has no overnight wireless clients, so a failed guest DNS dependency is not reported until the first morning visitor arrives. Which ongoing safeguard MOST directly prevents recurrence?
Explanation
Correct Answer
Add synthetic service checks for low-traffic but time-critical WLANs. This repeatable safeguard addresses the mechanism—real-client telemetry alone cannot observe service failures when no clients are active—and reduces the chance that the specific fault recurs.
Incorrect Answers
Require post-action SLE checks even when proactive issues disappear from the queue. This protects against another issue—an operations center treats a cleared Marvis Action as proof that the affected user population recovered without comparing metrics—but is not the most direct prevention for a hospital has no overnight wireless clients, so a failed guest DNS dependency is not reported until the first morning visitor arrives.
Schedule proactive Marvis action triage and confirm outcomes with SLE metrics. This protects against another issue—a network team reviews only reactive tickets despite recurring Wi-Fi SLE degradation in several sites—but is not the most direct prevention for a hospital has no overnight wireless clients, so a failed guest DNS dependency is not reported until the first morning visitor arrives.
Keep event alert escalation separate from root-cause action queues. This protects against another issue—a network lead treats every real-time AP-down alert as if it were an identical Marvis Action requiring the same response workflow—but is not the most direct prevention for a hospital has no overnight wireless clients, so a failed guest DNS dependency is not reported until the first morning visitor arrives.