- A
SSE-S3 (S3-managed keys)
Why wrong: AWS manages the keys, not the customer.
- B
SSE-C (Customer-provided keys)
SSE-C allows the customer to provide their own encryption keys, which AWS uses and then discards.
- C
SSE-KMS (AWS KMS-managed keys)
Why wrong: AWS KMS manages keys, but the customer can create and manage them through KMS; however, the key material is stored in KMS.
- D
Client-side encryption
Why wrong: Client-side encryption encrypts data before sending to S3, but the question asks for encryption at rest managed by the customer on the server side.
Question 224 of 997
CV0-004 Security Practice Question
This CV0-004 practice question tests your understanding of security. 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 cloud customer needs to ensure that data stored in an S3 bucket is encrypted at rest. The customer wants to manage the encryption keys themselves. Which encryption option should they choose?
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
✓
SSE-C (Customer-provided keys)
SSE-C (Server-Side Encryption with Customer-Provided Keys) allows the customer to manage their own encryption keys while AWS handles the encryption and decryption process. The customer provides the encryption key as part of the PUT request, and AWS uses it to encrypt the object at rest, then discards the key after the operation. This meets the requirement of managing the keys themselves while ensuring data is encrypted at rest on the server side.
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.
- ✗
SSE-S3 (S3-managed keys)
Why it's wrong here
AWS manages the keys, not the customer.
- ✓
SSE-C (Customer-provided keys)
Why this is correct
SSE-C allows the customer to provide their own encryption keys, which AWS uses and then discards.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
SSE-KMS (AWS KMS-managed keys)
Why it's wrong here
AWS KMS manages keys, but the customer can create and manage them through KMS; however, the key material is stored in KMS.
- ✗
Client-side encryption
Why it's wrong here
Client-side encryption encrypts data before sending to S3, but the question asks for encryption at rest managed by the customer on the server side.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between server-side and client-side encryption, where candidates mistakenly choose client-side encryption because they think 'managing keys' means encrypting on the client, but the question explicitly requires encryption at rest in S3, which is server-side.
Detailed technical explanation
How to think about this question
With SSE-C, the customer includes the x-amz-server-side-encryption-customer-algorithm header (e.g., AES256) and the x-amz-server-side-encryption-customer-key header (the base64-encoded 256-bit key) in each PUT request. AWS uses this key to encrypt the object, stores only a salted HMAC of the key for integrity checks, and never stores the key itself. A real-world scenario is a regulated industry requiring the customer to hold the encryption keys on-premises while leveraging AWS for storage and compute.
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 practitioner preparing for the CV0-004 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Security — study guide chapter
Learn the concepts, then practise the questions
- →
Security practice questions
Targeted practice on this topic area only
- →
All CV0-004 questions
997 questions across all exam domains
- →
CompTIA Cloud+ CV0-004 study guide
Full concept coverage aligned to exam objectives
- →
CV0-004 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related CV0-004 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Cloud Architecture and Design practice questions
Practise CV0-004 questions linked to Cloud Architecture and Design.
Deployment practice questions
Practise CV0-004 questions linked to Deployment.
Security practice questions
Practise CV0-004 questions linked to Security.
Operations and Support practice questions
Practise CV0-004 questions linked to Operations and Support.
Troubleshooting practice questions
Practise CV0-004 questions linked to Troubleshooting.
CV0-004 fundamentals practice questions
Practise CV0-004 questions linked to CV0-004 fundamentals.
CV0-004 scenario practice questions
Practise CV0-004 questions linked to CV0-004 scenario.
CV0-004 troubleshooting practice questions
Practise CV0-004 questions linked to CV0-004 troubleshooting.
Practice this exam
Start a free CV0-004 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this CV0-004 question test?
Security — This question tests Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: SSE-C (Customer-provided keys) — SSE-C (Server-Side Encryption with Customer-Provided Keys) allows the customer to manage their own encryption keys while AWS handles the encryption and decryption process. The customer provides the encryption key as part of the PUT request, and AWS uses it to encrypt the object at rest, then discards the key after the operation. This meets the requirement of managing the keys themselves while ensuring data is encrypted at rest on the server side.
What should I do if I get this CV0-004 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jul 4, 2026
This CV0-004 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CV0-004 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.