- A
--kms-key-id <key-id>
Why wrong: This specifies the key ID but does not enable encryption; you need --server-side-encryption.
- B
--sse AES256
Why wrong: This specifies SSE-S3, not SSE-KMS.
- C
--encryption aws:kms
Why wrong: This is not a valid AWS CLI parameter.
- D
--server-side-encryption aws:kms
This parameter enables SSE-KMS.
Question 716 of 1,750
DOP-C02 SSE-KMS Practice Question
This DOP-C02 practice question tests your understanding of security and compliance. 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. A key principle to apply: sSE-KMS. 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's security policy requires that all data stored in Amazon S3 must be encrypted at rest using server-side encryption with customer-managed keys (SSE-KMS). When uploading an object via the AWS CLI, which parameter must be included to enforce this?
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
✓
--server-side-encryption aws:kms
The correct parameter to enforce server-side encryption with AWS KMS (SSE-KMS) when uploading an object via the AWS CLI is --server-side-encryption aws:kms, which corresponds to option D. Option A is incorrect because --kms-key-id only specifies the key ID but does not enable encryption by itself; it must be combined with --server-side-encryption aws:kms. Option B is incorrect because --sse AES256 is not a valid AWS CLI parameter; the correct parameter for SSE-S3 is --server-side-encryption AES256. Option C is incorrect because --encryption is not a valid AWS CLI parameter for server-side encryption.
Key principle: SSE-KMS
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
--kms-key-id <key-id>
Why it's wrong here
This specifies the key ID but does not enable encryption; you need --server-side-encryption.
- ✗
--sse AES256
Why it's wrong here
This specifies SSE-S3, not SSE-KMS.
- ✗
--encryption aws:kms
Why it's wrong here
This is not a valid AWS CLI parameter.
- ✓
--server-side-encryption aws:kms
Why this is correct
This parameter enables SSE-KMS.
Related concept
SSE-KMS
Common exam traps
Common exam trap: answer the scenario, not the keyword
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
How to think about this question
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- SSE-KMS
- --server-side-encryption
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
SSE-KMS
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.
Review sSE-KMS, then practise related DOP-C02 questions on the same topic to reinforce the concept.
- →
Security and Compliance — study guide chapter
Learn the concepts, then practise the questions
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Security and Compliance practice questions
Targeted practice on this topic area only
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DOP-C02 practice test guide
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
Security and Compliance — This question tests Security and Compliance — SSE-KMS.
What is the correct answer to this question?
The correct answer is: --server-side-encryption aws:kms — The correct parameter to enforce server-side encryption with AWS KMS (SSE-KMS) when uploading an object via the AWS CLI is --server-side-encryption aws:kms, which corresponds to option D. Option A is incorrect because --kms-key-id only specifies the key ID but does not enable encryption by itself; it must be combined with --server-side-encryption aws:kms. Option B is incorrect because --sse AES256 is not a valid AWS CLI parameter; the correct parameter for SSE-S3 is --server-side-encryption AES256. Option C is incorrect because --encryption is not a valid AWS CLI parameter for server-side encryption.
What should I do if I get this DOP-C02 question wrong?
Review sSE-KMS, then practise related DOP-C02 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
SSE-KMS
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Last reviewed: Jun 20, 2026
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