PAS-C01 Operations and Maintenance Practice Question
An SAP system is running on AWS with a Multi-AZ RDS for SAP HANA database. The operations team notices that the database failover test takes longer than expected. What is the most likely cause of the prolonged failover time?
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 application caches the DNS name of the database
Multi-AZ failover involves DNS propagation. If the application caches the DNS resolution, it may continue to point to the old primary, causing delays until the cache expires. Database instance size, storage type, and VPC configuration do not directly affect failover time.
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 VPC does not have DNS resolution enabled
Why it's wrong here
DNS resolution must be enabled for the endpoint to resolve, but this does not affect failover time.
- ✓
The application caches the DNS name of the database
Why this is correct
DNS caching can cause the application to continue using the old endpoint, delaying failover completion.
- ✗
The RDS instance uses General Purpose SSD storage
Why it's wrong here
Storage type affects I/O performance, not failover time.
- ✗
The database instance size is too small
Why it's wrong here
Instance size affects performance, not failover time.
Visual reference
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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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.