This PAS-C01 practice question tests your understanding of operations and maintenance. 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 wants to monitor the disk space utilization of their SAP application servers. Which AWS service can provide a centralized view of disk space metrics without installing additional agents?
AWS Systems Manager Inventory
Systems Manager Inventory collects OS-level information, including disk space, using the SSM Agent which is often pre-installed.
Amazon CloudWatch
Why wrong: CloudWatch requires the CloudWatch agent for disk metrics, which is an additional installation.
AWS CloudTrail
Why wrong: CloudTrail logs API calls, not disk metrics.
Amazon Inspector
Why wrong: Inspector is for security assessments, not disk metrics.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
AWS Systems Manager Inventory
Option D is correct because CloudWatch can collect disk metrics via the CloudWatch agent, but the question says 'without installing additional agents'. However, CloudWatch does require an agent for disk metrics. But the question might mean without third-party agents. Actually, the best answer is CloudWatch with the unified CloudWatch agent. But since it says without additional agents, perhaps they mean using built-in OS tools? Option B is wrong. Option C is wrong. Option A is wrong. The correct answer is D, as CloudWatch can collect disk metrics if the CloudWatch agent is installed, but that is an additional agent. Hmm. Let's reconsider: The question says 'without installing additional agents', so maybe they expect the use of CloudWatch metrics that are available by default? EC2 does not send disk metrics by default. So the answer might be Systems Manager Inventory, which collects disk information without an agent? Actually, Systems Manager Agent (SSM Agent) is pre-installed on many AMIs, so it might be considered not additional. Option B: Systems Manager Inventory can collect disk information. Option D: CloudWatch requires an agent. So B is correct. Let's go with B.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
AWS Systems Manager Inventory
Why this is correct
Systems Manager Inventory collects OS-level information, including disk space, using the SSM Agent which is often pre-installed.
Related concept
Read the scenario before looking for a memorised answer.
Amazon CloudWatch
Why it's wrong here
CloudWatch requires the CloudWatch agent for disk metrics, which is an additional installation.
AWS CloudTrail
Why it's wrong here
CloudTrail logs API calls, not disk metrics.
Amazon Inspector
Why it's wrong here
Inspector is for security assessments, not disk metrics.
Common exam traps
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
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
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
Operations and Maintenance — This question tests Operations and Maintenance — Read the scenario before looking for a memorised answer..
The correct answer is: AWS Systems Manager Inventory — Option D is correct because CloudWatch can collect disk metrics via the CloudWatch agent, but the question says 'without installing additional agents'. However, CloudWatch does require an agent for disk metrics. But the question might mean without third-party agents. Actually, the best answer is CloudWatch with the unified CloudWatch agent. But since it says without additional agents, perhaps they mean using built-in OS tools? Option B is wrong. Option C is wrong. Option A is wrong. The correct answer is D, as CloudWatch can collect disk metrics if the CloudWatch agent is installed, but that is an additional agent. Hmm. Let's reconsider: The question says 'without installing additional agents', so maybe they expect the use of CloudWatch metrics that are available by default? EC2 does not send disk metrics by default. So the answer might be Systems Manager Inventory, which collects disk information without an agent? Actually, Systems Manager Agent (SSM Agent) is pre-installed on many AMIs, so it might be considered not additional. Option B: Systems Manager Inventory can collect disk information. Option D: CloudWatch requires an agent. So B is correct. Let's go with B.
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.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 2026
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