PAS-C01 ALB Health Check Practice Question
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?
⚠ Common exam trap
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.
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 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.
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.
- ✗
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.
Go deeper
Related to this question
About these practice questions
Courseiva writes every PAS-C01 question from scratch — 1,616 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PAS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PAS-C01 exam.