At a bank, trading-floor laptops fail the market-data page only after a docking-station swap, while data-center Enterprise Agents stay green. Which test should be added?
Select an answer to reveal the explanation.
Short Explanation
When the trouble starts the day you change the desk dock, you inspect that desk before you replace the building feed. Add an Endpoint Agent test on the laptop whose failures line up with the docking-station swap. A data-center Enterprise Agent, a cloud DNS test that never uses the dock, or a page load that never runs on the laptop stays far from the change that matches the break.
Full Explanation
The market-data failures line up with a docking-station swap on the trading-floor laptops, and the data-center Enterprise Agents stay green, so the new test has to run on the laptop that was docked differently. An Endpoint Agent test on the laptop whose failures match the dock swap measures from that device and can see the local path the dock changed. Another Enterprise Agent placed in the data center beside the green probes adds coverage where the tests already succeed and never sits on the dock. A DNS test from a cloud probe that does not sit on the docking station measures resolution from the cloud and cannot see a dock change on the trading floor. A page-load test that runs in the data center and skips the docked laptop loads the market-data page from the healthy vantage point and skips the device whose dock matches the failures. Exam caveat: a change that coincides with the failure on one class of endpoint is an endpoint clue, even when central probes stay green. Operational check: run the Endpoint Agent test on one laptop before and after the same dock swap, and confirm the data-center agents stay green while the laptop result tracks the dock.