- A
Increase the size of the EBS volumes
Why wrong: Increasing volume size can improve throughput but does not directly reduce latency.
- B
Provision additional IOPS on the EBS volumes
Why wrong: Provisioned IOPS increases cost and may not address latency spikes from network contention.
- C
Switch from LVM to RAID 0 striping
Why wrong: RAID 0 can improve throughput but may not reduce latency.
- D
Use an EBS-optimized EC2 instance type
EBS-optimized instances provide dedicated bandwidth to EBS, reducing latency.
Question 939 of 1,733
PAS-C01 Technology Practice Question
This PAS-C01 practice question tests your understanding of technology. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 is running SAP HANA on an EC2 instance. The storage is configured with multiple EBS volumes striped using LVM. The SAP administrator notices that disk I/O latency spikes during peak hours. Which change would MOST effectively reduce latency without incurring additional cost?
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
✓
Use an EBS-optimized EC2 instance type
Option D is correct because using an EBS-optimized EC2 instance provides dedicated network bandwidth for EBS I/O, which reduces contention and latency without additional cost if the instance type already supports it. Option A is incorrect because increasing the size of EBS volumes does not directly reduce latency. Option B is incorrect because provisioning additional IOPS incurs extra cost, contradicting the requirement. Option C is incorrect because switching to RAID 0 striping improves throughput but does not lower latency.
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 size of the EBS volumes
Why it's wrong here
Increasing volume size can improve throughput but does not directly reduce latency.
- ✗
Provision additional IOPS on the EBS volumes
Why it's wrong here
Provisioned IOPS increases cost and may not address latency spikes from network contention.
- ✗
Switch from LVM to RAID 0 striping
Why it's wrong here
RAID 0 can improve throughput but may not reduce latency.
- ✓
Use an EBS-optimized EC2 instance type
Why this is correct
EBS-optimized instances provide dedicated bandwidth to EBS, reducing latency.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
Visual reference
Quick reference
RAID Level Comparison
| RAID Level | Min Disks | Fault Tolerance | Read | Write | Usable Capacity |
|---|---|---|---|---|---|
| RAID 0 | 2 | None | Excellent | Excellent | 100% |
| RAID 1 | 2 | 1 disk | Good | Moderate | 50% |
| RAID 5 | 3 | 1 disk | Good | Moderate | 67–94% |
| RAID 6 | 4 | 2 disks | Good | Lower | 50–88% |
| RAID 10 | 4 | 1 disk per mirror | Excellent | Good | 50% |
RAID is not a backup strategy — it protects against disk failure but not against accidental deletion, ransomware, or site-level events.
What to study next
Got this wrong? Here's your next step.
Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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: Use an EBS-optimized EC2 instance type — Option D is correct because using an EBS-optimized EC2 instance provides dedicated network bandwidth for EBS I/O, which reduces contention and latency without additional cost if the instance type already supports it. Option A is incorrect because increasing the size of EBS volumes does not directly reduce latency. Option B is incorrect because provisioning additional IOPS incurs extra cost, contradicting the requirement. Option C is incorrect because switching to RAID 0 striping improves throughput but does not lower latency.
What should I do if I get this PAS-C01 question wrong?
Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 2026
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