- A
Weighted routing
Why wrong: Weighted routing splits traffic by percentage, but it does not automatically prefer one healthy endpoint.
- B
Failover routing with health checks
Route 53 failover routing is designed for active-passive resilience. You define a primary record and a secondary record, then attach health checks so DNS answers shift to the standby when the primary is unhealthy. This provides a simple disaster recovery pattern for user-facing endpoints without requiring application-level traffic management.
- C
Geolocation routing
Why wrong: Geolocation routes based on user location, not on which site is healthy during an outage.
- D
Latency-based routing
Why wrong: Latency-based routing selects the fastest endpoint, but it is not the same as primary-and-standby failover.
Quick Answer
Failover routing with health checks is the correct choice because it enables an active-passive architecture where Route 53 directs traffic to the primary application in us-east-1 only while its health check passes, and automatically fails over to the standby in us-west-2 if that health check fails. This directly satisfies the requirement for automatic, health-based traffic redirection without manual intervention, as the health check continuously monitors the primary endpoint’s availability. On the SAA-C03 exam, this scenario tests your understanding of when to use failover routing versus other policies like weighted or latency-based routing—a common trap is selecting a multi-region active-active policy instead. Remember that failover routing is strictly for active-passive setups, and the health check is what triggers the switch. A simple memory tip: “Failover = one active, one backup; health check is the trigger.”
SAA-C03 Design Secure Architectures Practice Question
This SAA-C03 practice question tests your understanding of design secure architectures. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company has a primary application in us-east-1 and a standby environment in us-west-2. Users should go to the primary site while it is healthy and automatically switch to the standby site if the primary fails. Which Route 53 routing policy should they use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"primary"Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
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
Failover routing with health checks
Failover routing with health checks is the correct choice because it allows you to configure an active-passive failover pattern where Route 53 directs traffic to the primary resource (us-east-1) as long as it passes a health check. If the health check fails, Route 53 automatically routes traffic to the secondary resource (us-west-2), ensuring high availability without manual intervention.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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
Why it's wrong here
Weighted routing splits traffic by percentage, but it does not automatically prefer one healthy endpoint.
- ✓
Failover routing with health checks
Why this is correct
Route 53 failover routing is designed for active-passive resilience. You define a primary record and a secondary record, then attach health checks so DNS answers shift to the standby when the primary is unhealthy. This provides a simple disaster recovery pattern for user-facing endpoints without requiring application-level traffic management.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Geolocation routing
Why it's wrong here
Geolocation routes based on user location, not on which site is healthy during an outage.
- ✗
Latency-based routing
Why it's wrong here
Latency-based routing selects the fastest endpoint, but it is not the same as primary-and-standby failover.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse failover routing with latency-based routing, thinking that latency routing will automatically switch to a healthy region, but latency routing only optimizes for speed and does not consider health status unless combined with health checks, which is not its primary purpose.
Detailed technical explanation
How to think about this question
Failover routing in Route 53 relies on health checks that monitor the primary endpoint (e.g., via HTTP, HTTPS, or TCP) with configurable intervals (default 30 seconds) and failure thresholds (default 3). When the health check fails, Route 53 updates DNS responses to return the secondary record's IP, but note that DNS caching by clients and resolvers (based on TTL, often 60 seconds) can introduce a delay before all traffic shifts to the standby site. In a real-world scenario, you might pair this with Route 53 Application Recovery Controller for faster failover using cell-based routing.
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.
TExam Day Tips
- 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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this SAA-C03 question test?
Design Secure Architectures — This question tests Design Secure Architectures — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Failover routing with health checks — Failover routing with health checks is the correct choice because it allows you to configure an active-passive failover pattern where Route 53 directs traffic to the primary resource (us-east-1) as long as it passes a health check. If the health check fails, Route 53 automatically routes traffic to the secondary resource (us-west-2), ensuring high availability without manual intervention.
What should I do if I get this SAA-C03 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This SAA-C03 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAA-C03 exam.
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