PAS-C01 Operations and Maintenance Practice Question
A company is running SAP ERP on AWS with a multi-AZ deployment using Amazon EFS for shared transport directories. The system administrator notices that the SAP transport directory mounted via EFS is experiencing high latency during peak hours. The EFS file system is using the Standard storage class. Which combination of steps should the administrator take to reduce latency? (Choose TWO.)
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
✓
Move the EFS file system to the One Zone storage class.
Moving the EFS file system to the One Zone storage class places the data in the same Availability Zone as the EC2 instances, reducing network latency for the SAP transport directory. Option E is correct because switching the performance mode to Max I/O increases the parallel processing capability of the file system, which reduces latency during peak hours. Option A is incorrect because Bursting Throughput mode is the default and does not specifically address high latency; it provides a baseline throughput with bursting credits. Option C is incorrect because Standard-IA is an infrequent access storage class with higher retrieval latencies, unsuitable for a continuously used transport directory. Option D is incorrect because provisioned throughput increases throughput capacity but does not directly reduce latency; Max I/O performance mode is the intended solution for latency reduction.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use EFS Bursting Throughput mode.
Why it's wrong here
Bursting mode does not guarantee low latency.
- ✓
Move the EFS file system to the One Zone storage class.
Why this is correct
One Zone reduces latency when all clients are in the same AZ.
- ✗
Change the storage class to EFS Standard-IA.
Why it's wrong here
Standard-IA is for cost savings, not latency improvement.
- ✗
Enable provisioned throughput on the EFS file system.
Why it's wrong here
Provisioned throughput is not available with Standard performance mode.
- ✓
Switch the EFS performance mode to Max I/O.
Why this is correct
Max I/O mode provides higher throughput and lower latency for parallel workloads.
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 |
Go deeper
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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.