- A
Increase the gp2 volume size to 1,000 GB to gain more I/O credits.
Why wrong: Increasing size adds more credits but the credit model still applies; gp3 is a better long-term solution.
- B
Migrate the volume to gp3 with appropriate IOPS and throughput settings.
gp3 volumes provide consistent baseline IOPS and throughput without burst credits, solving the throttling issue.
- C
Enable EBS optimization on the EC2 instance.
Why wrong: EBS optimization is enabled by default on current generation instances and does not affect gp2 credit model.
- D
Move the database to Amazon RDS for Sybase ASE.
Why wrong: Amazon RDS does not support Sybase ASE as a database engine.
Question 430 of 1,733
PAS-C01 Technology Practice Question
This PAS-C01 practice question tests your understanding of technology. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
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?
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.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
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.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates 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.
Detailed technical explanation
How to think about this question
gp2 uses a token-bucket algorithm where each volume earns I/O credits at a rate of 3 IOPS per GiB (up to 16,000 IOPS baseline) and can burst up to 3,000 IOPS for volumes ≤ 1 TiB. Once the credit balance hits zero, throughput is throttled to the baseline rate. gp3 decouples IOPS and throughput from volume size, offering a guaranteed baseline of 3,000 IOPS and 125 MiB/s, with maximums of 16,000 IOPS and 1,000 MiB/s, making it ideal for consistent, high-I/O workloads like SAP ERP with Sybase ASE.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Visual reference
What to study next
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
Technology — This question tests Technology — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 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.
What should I do if I get this PAS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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.
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