PAS-C01 Technology Practice Question
A company runs SAP ERP on AWS with a Sybase ASE database. The database is on an EC2 instance with a single 500 GB gp2 EBS volume. The volume shows 100% credit balance consumption frequently, causing I/O throttling. What should the company do to resolve the throttling?
⚠ Common exam trap
Test-takers frequently assume increasing gp2 volume size (Option A) is the only way to gain more I/O credits, overlooking that gp3 eliminates the credit model entirely and provides a cost-effective, predictable performance baseline without throttling.
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
✓
Migrate the volume to gp3 with appropriate IOPS and throughput settings.
The gp2 volume's credit balance is fully consumed because the workload's sustained I/O demand exceeds the baseline performance of 500 GB gp2 (1,500 IOPS). Migrating to gp3 (option B) eliminates the credit-bucket model entirely, providing a baseline of 3,000 IOPS and 125 MiB/s throughput regardless of volume size, with the ability to provision higher IOPS and throughput independently without relying on burst credits.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Increase the gp2 volume size to 1,000 GB to gain more I/O credits.
Why it's wrong here
Increasing size adds more credits but the credit model still applies; gp3 is a better long-term solution.
- ✓
Migrate the volume to gp3 with appropriate IOPS and throughput settings.
Why this is correct
gp3 volumes provide consistent baseline IOPS and throughput without burst credits, solving the throttling issue.
- ✗
Enable EBS optimization on the EC2 instance.
Why it's wrong here
EBS optimization is enabled by default on current generation instances and does not affect gp2 credit model.
- ✗
Move the database to Amazon RDS for Sybase ASE.
Why it's wrong here
Amazon RDS does not support Sybase ASE as a database engine.
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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.