This ANS-C01 practice question tests your understanding of network design. 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 wants to design a multi-region active-active architecture with Amazon Route 53 latency-based routing and failover using health checks. Which TWO configurations are necessary? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a latency alias record for each region's resource
Option C is correct because latency-based routing in Route 53 uses alias records to route traffic based on the lowest latency for the end user. Configuring a latency alias record for each regional resource (e.g., an Application Load Balancer) allows Route 53 to respond with the IP of the resource that provides the best latency. Option D is correct because health checks must be associated with each latency record to enable failover; if a resource fails its health check, Route 53 removes it from the pool of healthy endpoints, ensuring traffic is only routed to healthy regions.
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.
✗
Use geolocation routing to direct users to the nearest region
Why it's wrong here
Geolocation routing is different from latency routing.
✗
Assign a weight to each record for traffic distribution
Why it's wrong here
Weights are used in weighted routing, not latency routing.
✓
Configure a latency alias record for each region's resource
Why this is correct
Latency-based routing uses latency alias records.
Related concept
Read the scenario before looking for a memorised answer.
✓
Create a health check for each resource and associate it with the record
Why this is correct
Health checks are required for failover.
Related concept
Read the scenario before looking for a memorised answer.
✗
Set the failover record type to 'Active-Active'
Why it's wrong here
Failover routing records support only active-passive.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse latency-based routing with geolocation routing, or incorrectly assume that a failover record type must be explicitly set to 'Active-Active', when in fact the active-active behavior is achieved by combining latency-based routing with health checks, not by a specific record type.
Detailed technical explanation
How to think about this question
Latency-based routing works by Route 53 maintaining a latency database built from measurements between AWS regions and internet users; when a query arrives, Route 53 selects the region with the lowest estimated latency. Health checks for latency records are performed by Route 53 health checkers from multiple global locations, and if a resource fails, Route 53 automatically excludes that record from responses, effectively providing failover without requiring a separate failover routing policy. This design is commonly used for multi-region active-active architectures where both regions serve traffic simultaneously, and failover is handled transparently via health check status.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: Configure a latency alias record for each region's resource — Option C is correct because latency-based routing in Route 53 uses alias records to route traffic based on the lowest latency for the end user. Configuring a latency alias record for each regional resource (e.g., an Application Load Balancer) allows Route 53 to respond with the IP of the resource that provides the best latency. Option D is correct because health checks must be associated with each latency record to enable failover; if a resource fails its health check, Route 53 removes it from the pool of healthy endpoints, ensuring traffic is only routed to healthy regions.
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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Question Discussion
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