DEA-C01 Data Security and Governance Practice Question
This DEA-C01 practice question tests your understanding of data security and governance. 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.
A data engineer is designing a data lake on S3 and needs to ensure that data is encrypted at rest using customer-managed KMS keys. The engineer also needs to audit all access to the KMS keys. Which combination of services should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SSE-KMS with AWS CloudTrail
S3 server-side encryption with KMS (SSE-KMS) uses customer-managed KMS keys. CloudTrail logs all KMS API calls, including Decrypt and GenerateDataKey. Option A is wrong because SSE-S3 uses AWS-managed keys, not customer-managed. Option B is wrong because S3 Inventory does not audit KMS access. Option D is wrong because S3 access logs do not capture KMS operations. Option C is correct.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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-KMS with AWS CloudTrail
Why this is correct
SSE-KMS uses customer-managed KMS keys; CloudTrail records KMS API calls for auditing.
Related concept
Static NAT maps one inside address to one outside address.
✗
SSE-C with CloudWatch Logs
Why it's wrong here
SSE-C uses customer-provided keys, not KMS; CloudWatch Logs is not the primary audit service for KMS.
✗
SSE-KMS with S3 Inventory
Why it's wrong here
S3 Inventory tracks object metadata, not KMS usage.
✗
SSE-S3 with S3 server access logs
Why it's wrong here
SSE-S3 does not use customer-managed keys.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DEA-C01 NAT questions on configuration and troubleshooting.
Data Security and Governance — This question tests Data Security and Governance — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: SSE-KMS with AWS CloudTrail — S3 server-side encryption with KMS (SSE-KMS) uses customer-managed KMS keys. CloudTrail logs all KMS API calls, including Decrypt and GenerateDataKey. Option A is wrong because SSE-S3 uses AWS-managed keys, not customer-managed. Option B is wrong because S3 Inventory does not audit KMS access. Option D is wrong because S3 access logs do not capture KMS operations. Option C is correct.
What should I do if I get this DEA-C01 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DEA-C01 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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 →
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 DEA-C01 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 DEA-C01 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.