An application serves users in three widely separated regions. What PoP arrangement best supports monitoring it?
Select an answer to reveal the explanation.
Short Explanation
Three user populations mean three vantage points. You need a PoP in or near each region so you measure each user population's actual experience separately. Averaging them into one location hides exactly the differences you deployed synthetics to find.
Full Explanation
The correct arrangement is placing a PoP in or near each region, so each user population's actual experience is measured separately. Per-region PoPs surface regional differences in latency, routing and availability, which is the information needed to act on a problem affecting one population.
Placing a single PoP in the region where the application is hosted is incorrect because testing from beside the application measures the shortest path and hides everything users experience getting to it. Choosing a single PoP in whichever region is cheapest to operate is incorrect because cost-driven placement produces results unrelated to any user population. Using no PoPs and relying on real-user monitoring to cover all three regions is incorrect because real-user monitoring depends on users being present and reports problems only after they are experienced.
For the exam, align PoP distribution with user distribution.