- A
AWS Trusted Advisor
Why wrong: Trusted Advisor offers best-practice checks but not detailed EBS metrics.
- B
Amazon Inspector
Why wrong: Inspector is for security vulnerability assessments.
- C
Amazon CloudWatch
CloudWatch provides EBS performance metrics.
- D
AWS CloudTrail
Why wrong: CloudTrail records API calls, not performance metrics.
Question 1,670 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 an SAP HANA database on an Amazon EC2 instance. The storage is configured with multiple EBS volumes striped using LVM. The company wants to ensure the database performance is consistent and can detect potential bottlenecks. Which AWS service should be used to monitor the EBS volume metrics such as Average Queue Length and Throughput?
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
✓
Amazon CloudWatch
Amazon CloudWatch is the correct service because it provides detailed, granular monitoring of EBS volume metrics such as Average Queue Length (AverageQueueLength) and Throughput (VolumeReadBytes/VolumeWriteBytes). These metrics are collected at 1-minute intervals by default for EBS volumes attached to Nitro-based EC2 instances, enabling you to detect performance bottlenecks like high queue depths or throughput saturation. CloudWatch also allows you to set alarms and create dashboards for proactive monitoring of SAP HANA database storage performance.
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.
- ✗
AWS Trusted Advisor
Why it's wrong here
Trusted Advisor offers best-practice checks but not detailed EBS metrics.
- ✗
Amazon Inspector
Why it's wrong here
Inspector is for security vulnerability assessments.
- ✓
Amazon CloudWatch
Why this is correct
CloudWatch provides EBS performance metrics.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS CloudTrail
Why it's wrong here
CloudTrail records API calls, not performance metrics.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse AWS Trusted Advisor's 'performance' checks (which only flag underutilized or overutilized resources at a high level) with the granular, real-time metrics that CloudWatch provides for EBS volumes, leading them to incorrectly select Trusted Advisor.
Detailed technical explanation
How to think about this question
Under the hood, CloudWatch collects EBS metrics via the Amazon EC2 hypervisor layer, which for Nitro-based instances uses the NVMe driver to expose I/O statistics directly. The AverageQueueLength metric represents the number of pending I/O requests waiting to be serviced by the EBS volume; a sustained value above 1 often indicates a bottleneck. In a real-world SAP HANA scenario, monitoring VolumeQueueLength alongside VolumeReadBytes/VolumeWriteBytes helps distinguish between throughput limits and latency issues, enabling precise scaling of EBS io2 Block Express volumes or adjusting LVM striping.
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.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
What to study next
Got this wrong? Here's your next step.
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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: Amazon CloudWatch — Amazon CloudWatch is the correct service because it provides detailed, granular monitoring of EBS volume metrics such as Average Queue Length (AverageQueueLength) and Throughput (VolumeReadBytes/VolumeWriteBytes). These metrics are collected at 1-minute intervals by default for EBS volumes attached to Nitro-based EC2 instances, enabling you to detect performance bottlenecks like high queue depths or throughput saturation. CloudWatch also allows you to set alarms and create dashboards for proactive monitoring of SAP HANA database storage performance.
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
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