- A
Weighted routing with equal weights
Why wrong: Weighted routing distributes load but does not consider latency or health.
- B
Failover routing with primary in us-east-1
Why wrong: Failover does not route to lowest latency; it uses primary/secondary.
- C
Latency-based routing with health checks
Latency routing sends to lowest latency region; health checks ensure failover.
- D
Geoproximity routing
Why wrong: Geoproximity routes based on geographic location, not live latency.
Question 66 of 1,705
ANS-C01 Network Design Practice Question
This ANS-C01 practice question tests your understanding of network design. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 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?
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.
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 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.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Geoproximity routing
Why it's wrong here
Geoproximity routes based on geographic location, not live latency.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that 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.
Detailed technical explanation
How to think about this question
Latency-based routing in Route 53 uses a global network of DNS resolvers to measure the round-trip time between the user and each endpoint, selecting the Region with the lowest latency for that specific query. When health checks are attached, Route 53 automatically excludes any unhealthy endpoint from the latency calculation, ensuring traffic is only sent to healthy Regions. This approach is ideal for active-active architectures where both Regions serve traffic, unlike failover routing which is active-passive.
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
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Design — This question tests Network Design — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 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.
What should I do if I get this ANS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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