- A
The security group for the web dispatcher does not allow traffic from the ALB.
Why wrong: If direct access works, the security group is likely correct.
- B
The web dispatcher is configured to redirect HTTP requests to HTTPS, and the health check is using HTTP.
A redirect response (3xx) is considered unhealthy by ALB; the health check should use HTTPS or the web dispatcher should not redirect.
- C
The web dispatcher instance is running out of memory, causing slow responses.
Why wrong: Slow responses could cause timeout, but the stem says direct access works.
- D
The web dispatcher has multiple IP addresses and the health check targets the wrong one.
Why wrong: Multiple IPs are not typical; health check targets the instance's private IP.
Question 264 of 1,733
PAS-C01 ALB Health Check Practice Question
This PAS-C01 practice question tests your understanding of technology. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: aLB Health Check. 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.
An SAP environment on AWS consists of several EC2 instances running SAP NetWeaver and a separate HANA database instance. The system is using an Application Load Balancer (ALB) to distribute traffic to the web dispatchers. Recently, the ALB health checks are failing for one of the web dispatchers, causing it to be taken out of service. You investigate and find that the web dispatcher is running and can be reached directly via its private IP. The health check is configured to check the /sap/public/health endpoint. What is the most likely reason for the health check failure?
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
✓
The web dispatcher is configured to redirect HTTP requests to HTTPS, and the health check is using HTTP.
The correct answer is B. The ALB health check expects a 200 OK response. If the web dispatcher is configured to redirect HTTP to HTTPS, the health check (which uses HTTP) receives a redirect (3xx) response instead of 200, causing the ALB to mark it as unhealthy. Option A is incorrect because if the security group blocked traffic from the ALB, direct access via private IP would also be blocked. Option C is incorrect because slow responses would cause timeout, not a redirect. Option D is incorrect because a single instance typically has one IP address for the web dispatcher service.
Key principle: ALB Health Check
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 security group for the web dispatcher does not allow traffic from the ALB.
Why it's wrong here
If direct access works, the security group is likely correct.
- ✓
The web dispatcher is configured to redirect HTTP requests to HTTPS, and the health check is using HTTP.
Why this is correct
A redirect response (3xx) is considered unhealthy by ALB; the health check should use HTTPS or the web dispatcher should not redirect.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
ALB Health Check
- ✗
The web dispatcher instance is running out of memory, causing slow responses.
Why it's wrong here
Slow responses could cause timeout, but the stem says direct access works.
- ✗
The web dispatcher has multiple IP addresses and the health check targets the wrong one.
Why it's wrong here
Multiple IPs are not typical; health check targets the instance's private IP.
Common exam traps
Common exam trap: answer the scenario, not the keyword
A common trap is to think that a redirect (3xx) response is acceptable for health checks. ALB requires a 200 OK from the target. Any other response, including redirects, is considered unhealthy.
Detailed technical explanation
How to think about this question
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- ALB Health Check
- HTTP to HTTPS Redirect
- Security Group Impact
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
ALB Health Check
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.
Review aLB Health Check, then practise related PAS-C01 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
Technology — This question tests Technology — ALB Health Check.
What is the correct answer to this question?
The correct answer is: The web dispatcher is configured to redirect HTTP requests to HTTPS, and the health check is using HTTP. — The correct answer is B. The ALB health check expects a 200 OK response. If the web dispatcher is configured to redirect HTTP to HTTPS, the health check (which uses HTTP) receives a redirect (3xx) response instead of 200, causing the ALB to mark it as unhealthy. Option A is incorrect because if the security group blocked traffic from the ALB, direct access via private IP would also be blocked. Option C is incorrect because slow responses would cause timeout, not a redirect. Option D is incorrect because a single instance typically has one IP address for the web dispatcher service.
What should I do if I get this PAS-C01 question wrong?
Review aLB Health Check, then practise related PAS-C01 questions on the same topic to reinforce the concept.
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?
ALB Health Check
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Last reviewed: Jun 20, 2026
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