PAS-C01 Operations and Maintenance Practice Question
An SAP system on AWS uses a shared file system with Amazon EFS. The operations team notices that file operations have high latency during peak hours. The EFS file system is configured with Bursting Throughput mode. The team monitors the CloudWatch metric PercentIOLimit and sees it consistently at 100%. What should the team do to improve performance?
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
✓
Change the file system to Provisioned Throughput mode
PercentIOLimit at 100% indicates the file system is using all its burst credits. To avoid throttling, the team should change to Provisioned Throughput mode or increase the amount of data stored to earn more credits. Changing to General Purpose performance mode affects latency, not throughput. Enabling encryption adds overhead. Increasing file system size indirectly helps earn more credits but is not a direct solution.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable encryption at rest for the file system
Why it's wrong here
Encryption does not improve throughput.
- ✗
Change the performance mode to General Purpose
Why it's wrong here
Performance mode affects latency for small file operations, not throughput limits.
- ✗
Increase the size of the file system by adding more files
Why it's wrong here
More data earns more burst credits, but this is a temporary fix and not the recommended solution.
- ✓
Change the file system to Provisioned Throughput mode
Why this is correct
Provisioned Throughput ensures consistent throughput regardless of burst credits.
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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.