- A
The routing policy is incorrectly configured as geolocation instead of latency
Why wrong: Configuration is latency-based.
- B
The us-east-1 ALB is not associated with a Route 53 record set
Why wrong: It is associated; otherwise no routing would occur.
- C
The health checks for the us-east-1 ALB are failing
Why wrong: No indication of health check failure.
- D
Latency measurements between the user and us-east-1 are higher than expected due to transient network conditions
Latency-based routing uses measured latency; higher latency can cause routing to other region.
Question 71 of 1,705
ANS-C01 Network Implementation Practice Question
This ANS-C01 practice question tests your understanding of network implementation. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 is deploying a multi-region application with an Application Load Balancer (ALB) in us-east-1 and a second ALB in eu-west-1. They want to route traffic to the nearest region using Amazon Route 53. They have set up a latency-based routing policy. Users in North America are being routed to eu-west-1 instead of us-east-1. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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 measurements between the user and us-east-1 are higher than expected due to transient network conditions
Latency-based routing in Route 53 selects the region with the lowest measured latency for the user. If transient network conditions cause higher-than-normal latency between the user and us-east-1, Route 53 may route traffic to eu-west-1 despite the geographic proximity. This is the most likely cause because the question states the routing policy is already set to latency, and transient conditions can skew measurements.
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.
- ✗
The routing policy is incorrectly configured as geolocation instead of latency
Why it's wrong here
Configuration is latency-based.
- ✗
The us-east-1 ALB is not associated with a Route 53 record set
Why it's wrong here
It is associated; otherwise no routing would occur.
- ✗
The health checks for the us-east-1 ALB are failing
Why it's wrong here
No indication of health check failure.
- ✓
Latency measurements between the user and us-east-1 are higher than expected due to transient network conditions
Why this is correct
Latency-based routing uses measured latency; higher latency can cause routing to other region.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may assume latency-based routing always routes to the geographically closest region, but it actually routes based on measured network latency, which can be affected by transient conditions, not just physical distance.
Detailed technical explanation
How to think about this question
Route 53 latency-based routing uses a global network of DNS resolvers and latency measurements collected over time, but transient network events (e.g., BGP path changes, congestion) can temporarily alter perceived latency. The routing decision is made at query time based on the latest latency data, so a brief spike in latency for us-east-1 can cause traffic to shift to eu-west-1 even if the user is physically closer to us-east-1.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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 Implementation — This question tests Network Implementation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Latency measurements between the user and us-east-1 are higher than expected due to transient network conditions — Latency-based routing in Route 53 selects the region with the lowest measured latency for the user. If transient network conditions cause higher-than-normal latency between the user and us-east-1, Route 53 may route traffic to eu-west-1 despite the geographic proximity. This is the most likely cause because the question states the routing policy is already set to latency, and transient conditions can skew measurements.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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