PAS-C01 Operations and Maintenance Practice Question
Your organization runs SAP S/4HANA on AWS. The system is critical and must have high availability. The architecture includes two SAP application servers behind an Application Load Balancer, and the HANA database uses replication to a standby in another Availability Zone. During a recent test of a failure scenario, you noticed that when the standby HANA instance takes over, the application servers cannot connect because the database hostname changes. What is the best solution to ensure application servers can connect to the database without manual intervention after a failover?
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
✓
Use Amazon Route 53 with a weighted record that points to the primary and standby instances, and use health checks to automatically fail over
Amazon Route 53 can be configured with a weighted or failover routing policy that uses health checks to automatically update DNS resolution. When the primary HANA instance fails, the health check detects the failure and Route 53 directs traffic to the standby instance, ensuring application servers can connect without manual intervention or hostname changes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure the application servers with both database IP addresses and retry logic
Why it's wrong here
Hardcoding IPs is brittle and not scalable; retry logic may cause delays.
- ✓
Use Amazon Route 53 with a weighted record that points to the primary and standby instances, and use health checks to automatically fail over
Why this is correct
Route 53 health checks can detect primary failure and route to the standby.
- ✗
Place the database behind a Network Load Balancer
Why it's wrong here
NLB does not support automatic failover between active and passive database instances without additional configuration.
- ✗
Update the application server configuration to use the standby hostname as a fallback
Why it's wrong here
This still requires manual update or complex scripting.
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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.