← PAS-C01·Amazon Web Services

Question 967 of 1,733

Operations and Maintenance →hardMultiple ChoiceObjective-mapped

PAS-C01 Operations and Maintenance Practice Question

This PAS-C01 practice question tests your understanding of operations and maintenance. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 a critical SAP ERP system on AWS. The system consists of a single EC2 instance running SAP NetWeaver with an Oracle database on the same instance. The instance type is r5.4xlarge with 500 GB gp2 EBS volume for the database. The operations team receives a CloudWatch alarm that the EBS volume's 'BurstBalance' metric has dropped to 0%. Consequently, the database performance degrades significantly. The team needs to resolve the issue and prevent recurrence. The SAP system cannot tolerate more than 10 minutes of downtime. The budget is limited. Which action should the team take?

A
Migrate the database to an io2 Block Express volume with provisioned IOPS.
Why wrong: Migrating to io2 Block Express is expensive and may require downtime, making it overkill for this situation.
B
Add additional EBS volumes and configure RAID 0 striping to increase IOPS.
Why wrong: Adding volumes and RAID 0 striping adds complexity, may require downtime, and does not solve the burst credit exhaustion issue.
C
Change the EBS volume type from gp2 to gp3 and increase the IOPS and throughput settings as needed.
Switching to gp3 provides a baseline level of performance without relying on burst credits, offering a cost-effective and non-disruptive solution.
D
Increase the volume size to 1000 GB to increase baseline IOPS and burst credits.
Why wrong: Increasing volume size temporarily boosts baseline IOPS and burst credits, but it only delays the problem if workload exceeds baseline; it is not a permanent fix.

Full breakdown with real-world context →

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 EBS volume type from gp2 to gp3 and increase the IOPS and throughput settings as needed.

Switching to gp3 provides baseline performance without burst credits and is cost-effective. Option C is correct. Option A is wrong because io2 Block Express is expensive and may require downtime to migrate. Option B is wrong because adding volumes and RAID 0 striping increases complexity, may require downtime, and does not address the root cause of burst credit exhaustion. Option D is wrong because increasing volume size only temporarily increases baseline IOPS and burst credits; it does not prevent recurrence if usage continues to exceed baseline.

Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
Migrate the database to an io2 Block Express volume with provisioned IOPS.
Why it's wrong here
Migrating to io2 Block Express is expensive and may require downtime, making it overkill for this situation.
✗
Add additional EBS volumes and configure RAID 0 striping to increase IOPS.
Why it's wrong here
Adding volumes and RAID 0 striping adds complexity, may require downtime, and does not solve the burst credit exhaustion issue.
✓
Change the EBS volume type from gp2 to gp3 and increase the IOPS and throughput settings as needed.
Why this is correct
Switching to gp3 provides a baseline level of performance without relying on burst credits, offering a cost-effective and non-disruptive solution.
Related concept
Standard ACLs match source addresses.
✗
Increase the volume size to 1000 GB to increase baseline IOPS and burst credits.
Why it's wrong here
Increasing volume size temporarily boosts baseline IOPS and burst credits, but it only delays the problem if workload exceeds baseline; it is not a permanent fix.

Common exam traps

Common exam trap: ACLs stop at the first match

ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.

Trap categories for this question

Scenario analysis trap
Migrating to io2 Block Express is expensive and may require downtime, making it overkill for this situation.

Detailed technical explanation

How to think about this question

ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.

KKey Concepts to Remember

Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.

TExam Day Tips

Check inbound versus outbound direction.
Read the ACL from top to bottom.
Look for a broader permit or deny above the intended line.

Key takeaway

ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.

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.

Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related PAS-C01 ACL questions on filtering logic and placement.

Related PAS-C01 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Design of SAP Workloads on AWS practice questions

Practise PAS-C01 questions linked to Design of SAP Workloads on AWS.

Technology practice questions

Practise PAS-C01 questions linked to Technology.

Migration practice questions

Practise PAS-C01 questions linked to Migration.

Operations and Maintenance practice questions

Practise PAS-C01 questions linked to Operations and Maintenance.

PAS-C01 fundamentals practice questions

Practise PAS-C01 questions linked to PAS-C01 fundamentals.

PAS-C01 scenario practice questions

Practise PAS-C01 questions linked to PAS-C01 scenario.

PAS-C01 troubleshooting practice questions

Practise PAS-C01 questions linked to PAS-C01 troubleshooting.

Practice this exam

Start a free PAS-C01 practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

10 questions 20 questions 30 questions 50 questions Timed 30

PAS-C01 practice-test guide →Study guide →Browse all practice tests

FAQ

Questions learners often ask

What does this PAS-C01 question test?

Operations and Maintenance — This question tests Operations and Maintenance — Standard ACLs match source addresses..

What is the correct answer to this question?

The correct answer is: Change the EBS volume type from gp2 to gp3 and increase the IOPS and throughput settings as needed. — Switching to gp3 provides baseline performance without burst credits and is cost-effective. Option C is correct. Option A is wrong because io2 Block Express is expensive and may require downtime to migrate. Option B is wrong because adding volumes and RAID 0 striping increases complexity, may require downtime, and does not address the root cause of burst credit exhaustion. Option D is wrong because increasing volume size only temporarily increases baseline IOPS and burst credits; it does not prevent recurrence if usage continues to exceed baseline.

What should I do if I get this PAS-C01 question wrong?

What is the key concept behind this question?

Standard ACLs match source addresses.

About these practice questions

Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →

How Courseiva writes practice questions · Editorial policy

Keep practising

Question Discussion

Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.

Loading comments…

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.