The answer is SSE-S3, because it is the only S3 encryption option that provides automatic key rotation with zero operational overhead. SSE-S3 uses Amazon S3-managed keys that are rotated on a regular basis—typically every 90 days—without any action required from the customer, making it the ideal choice when the requirement is to minimize management burden while ensuring encryption at rest. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this question tests your understanding of the key management responsibilities for each encryption option: SSE-S3 offloads key rotation entirely to AWS, SSE-KMS offers automatic rotation but requires you to enable it and manage the KMS key policy, SSE-C puts key rotation on you, and client-side encryption adds significant operational complexity. A common trap is assuming SSE-KMS is always the best choice for automatic rotation, but the key distinction is that SSE-S3 rotates keys without any customer configuration. Memory tip: think "S3-managed = set and forget" for automatic rotation.
SAP-C02 Design for New Solutions Practice Question
This SAP-C02 practice question tests your understanding of design for new solutions. 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 company is designing a new application that will store sensitive data in Amazon S3. The data must be encrypted at rest using a key that is rotated every 90 days. The company wants to use AWS managed services to minimize operational overhead. Which encryption solution should they choose?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SSE-S3
Option A is correct because SSE-S3 uses S3-managed keys that are automatically rotated. Option B is wrong because SSE-KMS requires customer management of key rotation, though it can be automatic with KMS. Option C is wrong because SSE-C requires the customer to manage the keys. Option D is wrong because client-side encryption adds operational overhead.
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-C
Why it's wrong here
SSE-C requires the customer to manage and rotate keys, increasing operational overhead.
✓
SSE-S3
Why this is correct
SSE-S3 automatically rotates keys every 90 days with no customer management.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Client-side encryption with AWS KMS
Why it's wrong here
Client-side encryption adds complexity and operational overhead for key management.
✗
SSE-KMS with automatic rotation
Why it's wrong here
KMS can automatically rotate keys, but requires customer key management and may incur additional costs.
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
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Design for New Solutions — This question tests Design for New Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: SSE-S3 — Option A is correct because SSE-S3 uses S3-managed keys that are automatically rotated. Option B is wrong because SSE-KMS requires customer management of key rotation, though it can be automatic with KMS. Option C is wrong because SSE-C requires the customer to manage the keys. Option D is wrong because client-side encryption adds operational overhead.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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 →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company is designing a new application that will process sensitive financial data. They need to ensure encryption at rest and in transit. Which of the following should they use? (Select TWO.)
medium
✓ A.TLS for all data in transit
B.AWS Certificate Manager (ACM) for all encryption
C.SSL certificates for all connections
✓ D.AWS Key Management Service (KMS) for encryption at rest
E.AWS Identity and Access Management (IAM) for data encryption
Why A: TLS (Transport Layer Security) is the industry-standard protocol for encrypting data in transit, ensuring confidentiality and integrity between client and server. AWS services like ELB, CloudFront, and API Gateway enforce TLS for all communications, making it the correct choice for securing data in transit.
Variation 2. A company is designing a new application that will process sensitive financial data. They need to ensure that data at rest is encrypted using customer-provided encryption keys (SSE-C) in Amazon S3. Which action is required to enable this?
hard
A.Use AWS KMS to generate a key
B.Enable default encryption on the bucket
✓ C.Provide the encryption key in the request headers
D.Configure a bucket policy to require SSE-C
Why C: SSE-C requires the customer to provide the encryption key in the request headers when uploading or accessing objects. Amazon S3 uses the provided key to encrypt data at rest and then discards the key; the customer is responsible for managing the key lifecycle. This is the only way to enforce customer-provided encryption keys at the object level.
Last reviewed: Jun 20, 2026
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.
This SAP-C02 practice question is part of Courseiva's free Amazon Web Services 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 SAP-C02 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.