This DEA-C01 practice question tests your understanding of data operations and support. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Refer to the exhibit. A data engineer runs the command on an object in S3. The engineer expected the object to have a tag 'type=raw' but sees no metadata. What is the likely cause?
Object tags are not returned by head-object; use get-object-tagging instead
Tags are separate from metadata.
The S3 bucket is in a different AWS Region
Why wrong: The command would fail if region mismatch.
The bucket policy blocks reading tags
Why wrong: head-object would fail entirely if blocked.
The object was created without tags because of lifecycle rules
Why wrong: Lifecycle does not remove tags at creation.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Object tags are not returned by head-object; use get-object-tagging instead
Option A is correct because the head-object command does not return object tags; you must use the get-object-tagging command to retrieve tags. Option B is incorrect because the head-object command succeeds regardless of region, and region does not affect tag visibility. Option C is incorrect because bucket policies can deny access but do not prevent tags from being returned by head-object; they would affect get-object-tagging instead. Option D is incorrect because lifecycle rules do not remove tags from objects; they may transition or expire objects but do not strip metadata.
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
For each option: why learners choose it and why it is or isn't the right answer here.
Object tags are not returned by head-object; use get-object-tagging instead
Why this is correct
Tags are separate from metadata.
Related concept
Standard ACLs match source addresses.
The S3 bucket is in a different AWS Region
Why it's wrong here
The command would fail if region mismatch.
The bucket policy blocks reading tags
Why it's wrong here
head-object would fail entirely if blocked.
The object was created without tags because of lifecycle rules
Why it's wrong here
Lifecycle does not remove tags at creation.
Common exam traps
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
Command / output trap
The command would fail if region mismatch.
Detailed technical explanation
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.
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
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
| 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
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 DEA-C01 ACL questions on filtering logic and placement.
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FAQ
Data Operations and Support — This question tests Data Operations and Support — Standard ACLs match source addresses..
The correct answer is: Object tags are not returned by head-object; use get-object-tagging instead — Option A is correct because the head-object command does not return object tags; you must use the get-object-tagging command to retrieve tags. Option B is incorrect because the head-object command succeeds regardless of region, and region does not affect tag visibility. Option C is incorrect because bucket policies can deny access but do not prevent tags from being returned by head-object; they would affect get-object-tagging instead. Option D is incorrect because lifecycle rules do not remove tags from objects; they may transition or expire objects but do not strip metadata.
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 DEA-C01 ACL questions on filtering logic and placement.
Standard ACLs match source addresses.
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Last reviewed: Jun 20, 2026
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