The answer is the missing `s3:ListBucket` action on the bucket-level ARN. This is correct because when the AWS SDK or CLI initiates an SAP HANA backup to S3, it first performs a `ListBucket` call to verify the bucket exists and to enumerate existing objects before uploading; without this permission on the bucket itself (ARN without `/*`), the operation fails at the initial listing step, even if `s3:PutObject` is allowed on the object-level ARN. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this tests your understanding that S3 permissions operate at two distinct levels—bucket-level actions like `s3:ListBucket` require the bucket ARN, while object-level actions like `s3:PutObject` require the `/*` suffix—and the common trap is granting only object-level permissions. Remember the memory tip: "List the bucket, then put the object"—you cannot put an object into a bucket you cannot list.
PAS-C01 Design of SAP Workloads on AWS Practice Question
This PAS-C01 practice question tests your understanding of design of sap workloads on aws. 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.
An SAP administrator is creating an IAM policy for an EC2 instance that performs SAP database backups to S3 and creates EBS snapshots. The policy as shown fails to allow the EC2 instance to perform backup operations. What is the most likely reason?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The policy does not include the 's3:ListBucket' action for the bucket itself.
Option D is correct because the policy lacks the `s3:ListBucket` action for the bucket itself (ARN without `/*`). When an EC2 instance performs SAP database backups to S3, the AWS SDK or CLI first issues a `ListBucket` request to verify the bucket exists and to list objects before uploading. Without this permission, the backup operation fails at the initial listing step, even if `s3:PutObject` is allowed on the object ARN.
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.
✗
The S3 resource ARN is incorrect; it should be 'arn:aws:s3:::sap-backup-bucket' without the '/*'.
Why it's wrong here
The ARN with '/*' is correct for object-level actions; list bucket requires the bucket ARN without '/*'.
✗
The S3 actions are too permissive; they should be restricted to specific prefixes.
Why it's wrong here
The actions are appropriate for backup operations; the issue is not over-permissiveness.
✗
The ec2:CreateSnapshot action must be restricted to specific volume ARNs.
Why it's wrong here
While best practice, it is not required; the policy works without volume ARN restriction.
✓
The policy does not include the 's3:ListBucket' action for the bucket itself.
Why this is correct
Without 's3:ListBucket' on the bucket resource, the instance cannot list objects or verify bucket existence, causing failures.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates focus on the EC2 snapshot permissions or S3 object ARN syntax, overlooking the prerequisite `s3:ListBucket` action required for any S3 upload workflow.
Detailed technical explanation
How to think about this question
Under the hood, S3 operations require a two-step authorization: `s3:ListBucket` on the bucket ARN (e.g., `arn:aws:s3:::sap-backup-bucket`) for listing, and `s3:PutObject` on the object ARN (e.g., `arn:aws:s3:::sap-backup-bucket/*`) for writing. The AWS SDK for SAP backup scripts often calls `HeadBucket` or `ListObjectsV2` before uploading, making `s3:ListBucket` mandatory. In real-world scenarios, forgetting this action is a common cause of silent failures in automated backup pipelines.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Design of SAP Workloads on AWS — This question tests Design of SAP Workloads on AWS — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The policy does not include the 's3:ListBucket' action for the bucket itself. — Option D is correct because the policy lacks the `s3:ListBucket` action for the bucket itself (ARN without `/*`). When an EC2 instance performs SAP database backups to S3, the AWS SDK or CLI first issues a `ListBucket` request to verify the bucket exists and to list objects before uploading. Without this permission, the backup operation fails at the initial listing step, even if `s3:PutObject` is allowed on the object ARN.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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