- A
Review the S3 bucket policy for any deny statements that may block the backup.
Bucket policies can explicitly deny access to certain principals.
- B
Enable S3 Transfer Acceleration on the bucket.
Why wrong: Transfer Acceleration does not affect access permissions.
- C
Check the IAM role attached to the EC2 instance for S3 permissions.
The instance must have appropriate IAM permissions to write to S3.
- D
Verify that the S3 bucket's KMS key is enabled.
Why wrong: KMS key permissions could be an issue, but not the most direct cause.
- E
Set up a VPC endpoint for S3.
Why wrong: VPC endpoint is for private connectivity, not permission.
Question 108 of 1,733
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.
An SAP system administrator is troubleshooting a failed HANA database backup to Amazon S3. The backup job returns an error: 'Access Denied'. Which TWO actions should the administrator take to resolve the issue?
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
✓
Review the S3 bucket policy for any deny statements that may block the backup.
Options A and C are correct because reviewing the S3 bucket policy for deny statements that may block the backup is a direct step to resolve an 'Access Denied' error, and checking the IAM role attached to the EC2 instance for S3 permissions is also a primary cause of access issues. Option B is incorrect because S3 Transfer Acceleration improves speed, not access. Option D is incorrect because the KMS key being enabled is not a direct cause of access denied; rather, the IAM role must have permission to use the key. Option E is incorrect because a VPC endpoint is not required if using public S3.
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.
- ✓
Review the S3 bucket policy for any deny statements that may block the backup.
Why this is correct
Bucket policies can explicitly deny access to certain principals.
Related concept
Standard ACLs match source addresses.
- ✗
Enable S3 Transfer Acceleration on the bucket.
Why it's wrong here
Transfer Acceleration does not affect access permissions.
- ✓
Check the IAM role attached to the EC2 instance for S3 permissions.
Why this is correct
The instance must have appropriate IAM permissions to write to S3.
Related concept
Standard ACLs match source addresses.
- ✗
Verify that the S3 bucket's KMS key is enabled.
Why it's wrong here
KMS key permissions could be an issue, but not the most direct cause.
- ✗
Set up a VPC endpoint for S3.
Why it's wrong here
VPC endpoint is for private connectivity, not permission.
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.
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 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.
Visual reference
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.
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.
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Operations and Maintenance — study guide chapter
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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: Review the S3 bucket policy for any deny statements that may block the backup. — Options A and C are correct because reviewing the S3 bucket policy for deny statements that may block the backup is a direct step to resolve an 'Access Denied' error, and checking the IAM role attached to the EC2 instance for S3 permissions is also a primary cause of access issues. Option B is incorrect because S3 Transfer Acceleration improves speed, not access. Option D is incorrect because the KMS key being enabled is not a direct cause of access denied; rather, the IAM role must have permission to use the key. Option E is incorrect because a VPC endpoint is not required if using public S3.
What should I do if I get this PAS-C01 question wrong?
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.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Last reviewed: Jun 20, 2026
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