ANS-C01 Network Design Practice Question

A company has a global application that uses Amazon Route 53 for DNS. The application is deployed in us-east-1 and eu-west-1. The company wants to route users to the Region with the lowest latency, but also provide failover if one Region becomes unhealthy. Which Route 53 routing policy should be used?

⚠ Common exam trap

Candidates often confuse latency-based routing with geoproximity routing, assuming geographic distance equals network latency, but Route 53's latency routing uses actual measured network performance, not physical location.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Latency-based routing with health checks

Latency-based routing with health checks is correct because it directs users to the Region that provides the lowest latency for each individual request, while health checks automatically remove unhealthy endpoints from the routing pool. This combination meets both the latency optimization and failover requirements without requiring a static primary/secondary configuration.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
Weighted routing with equal weights
Why it's wrong here
Weighted routing distributes load but does not consider latency or health.
✗
Failover routing with primary in us-east-1
Why it's wrong here
Failover does not route to lowest latency; it uses primary/secondary.
✓
Latency-based routing with health checks
Why this is correct
Latency routing sends to lowest latency region; health checks ensure failover.
✗
Geoproximity routing
Why it's wrong here
Geoproximity routes based on geographic location, not live latency.

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ANS-C01 Network Design Practice Question

Why each option matters

Option-by-option breakdown

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