SAP-C02 Design for New Solutions Practice Question
This SAP-C02 practice question tests your understanding of design for new solutions. 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.
Network Topology
An ALB is configured with a target group for HTTP:80. The health check returns a 302 redirect. What is the most likely cause of the unhealthy instances?
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.
Network Topology
A
The application is returning a 500 Internal Server Error.
Why wrong: 500 errors are different from 302.
B
The application is taking too long to respond.
Why wrong: Timeouts result in a different health check failure.
C
The security group is blocking health check traffic.
Why wrong: Blocked traffic would result in a different error, not 302.
D
The application is redirecting health checks to another URL.
A 302 redirect suggests the application is redirecting the health check request.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The application is redirecting health checks to another URL.
The ALB health check expects a 200 OK response from the target. A 302 redirect indicates the application is responding with a redirect (e.g., HTTP to HTTPS or to a login page) instead of a success status. This causes the health check to fail because the ALB does not follow redirects for health checks; it only accepts the configured success codes (default 200).
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 application is returning a 500 Internal Server Error.
Why it's wrong here
500 errors are different from 302.
✗
The application is taking too long to respond.
Why it's wrong here
Timeouts result in a different health check failure.
✗
The security group is blocking health check traffic.
Why it's wrong here
Blocked traffic would result in a different error, not 302.
✓
The application is redirecting health checks to another URL.
Why this is correct
A 302 redirect suggests the application is redirecting the health check request.
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 a redirect is harmless or that the ALB will follow it, but the ALB strictly evaluates the first response status code against the configured success codes, and a 302 is not a success by default.
Detailed technical explanation
How to think about this question
The ALB health check sends an HTTP GET request to the configured path (e.g., /). If the application returns a 302 redirect, the ALB treats it as a non-success response unless the health check's 'success codes' parameter explicitly includes 302. This commonly occurs when the application enforces HTTPS redirects or requires authentication, causing the health check to be redirected away from the intended endpoint. The ALB does not follow redirects during health checks; it evaluates only the initial response status code.
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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
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.
Design for New Solutions — This question tests Design for New Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The application is redirecting health checks to another URL. — The ALB health check expects a 200 OK response from the target. A 302 redirect indicates the application is responding with a redirect (e.g., HTTP to HTTPS or to a login page) instead of a success status. This causes the health check to fail because the ALB does not follow redirects for health checks; it only accepts the configured success codes (default 200).
What should I do if I get this SAP-C02 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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Question Discussion
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