Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
Your public API is hosted in two regions. You want Route 53 to automatically send traffic to the secondary region when the primary region’s endpoint fails. The primary API health check is returning failure codes, but clients still reach the primary region for several minutes. Which Route 53 configuration most directly addresses this behavior?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Use a single Alias A record with simple routing and a short TTL so Route 53 quickly changes the IP address.
Simple routing with an Alias record does not perform health-check-based switching to a different endpoint/record set. TTL affects caching duration, but it does not implement failover logic.
B
Best answer
Use Route 53 failover routing with a primary record and a secondary record, each associated with its own health check, so Route 53 answers with the healthy region.
Failover routing is designed for this: Route 53 evaluates health checks and returns the primary record while it is healthy. When the primary health check fails, Route 53 automatically returns the secondary record. Note that clients may still see traffic for a few minutes due to DNS caching, but failover routing is the configuration that enables automatic region switching.
C
Distractor review
Use weighted routing to send a small percentage of traffic to the secondary region, increasing it manually when the primary fails.
Weighted routing distributes traffic but does not automatically switch based on health. Manual changes introduce delay and operational dependencies.
D
Distractor review
Use latency routing only, letting Route 53 choose the lowest-latency region at query time, without health checks.
Latency routing optimizes for latency and does not provide deterministic failover semantics based on endpoint health. If the primary is unhealthy but still resolves, clients can keep being directed there.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
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FAQ
Questions learners often ask
What does this SAA-C03 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Use Route 53 failover routing with a primary record and a secondary record, each associated with its own health check, so Route 53 answers with the healthy region. — To automatically shift traffic when the primary endpoint fails, Route 53 must use health-check-driven routing between two predefined endpoints. Failover routing with a primary record and a secondary record (each tied to health checks) ensures that while the primary is healthy, it is returned; once it is unhealthy, Route 53 returns the secondary. The “several minutes” effect can still occur due to DNS caching/TTL, but failover routing is the direct solution for health-based region switching. A changes TTL but does not implement health-check-based record set switching. C provides distribution, not automatic failover, and relies on manual intervention. D optimizes latency without health-based failover behavior, so it does not guarantee that clients stop reaching the failed primary.
What should I do if I get this SAA-C03 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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