The correct answer is to enable TDE and use AWS KMS as the key manager by integrating with the Oracle TDE keystore. This is because Amazon RDS for Oracle does not support direct integration with AWS CloudHSM for Transparent Data Encryption; CloudHSM requires full control over the operating system and Oracle instance, which RDS does not provide. Instead, RDS Oracle supports TDE key management through either an Oracle wallet or AWS KMS, with KMS being the only supported external key manager for managed Oracle TDE on RDS. On the AWS Certified Database Specialty DBS-C01 exam, this question tests your understanding of the boundary between managed services and self-managed encryption—a common trap is assuming CloudHSM works with RDS when it actually requires EC2. Remember the memory tip: "RDS TDE keys live in KMS, not HSM."
DBS-C01 Database Security Practice Question
This DBS-C01 practice question tests your understanding of database 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 company has an Amazon RDS for Oracle DB instance that stores Personally Identifiable Information (PII). The security team requires that the data be transparently encrypted at rest using a key stored in AWS CloudHSM. What should the database administrator do to meet this requirement?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable TDE and use AWS KMS as the key manager by integrating with the Oracle TDE keystore.
Oracle Transparent Data Encryption (TDE) can use an external hardware security module (HSM) via the Oracle Key Vault or direct integration. However, AWS CloudHSM is not directly supported by RDS for Oracle TDE. RDS Oracle supports TDE using the Oracle wallet or AWS KMS (for integrated TDE). To use CloudHSM, you would need to run Oracle on EC2, not RDS. Option A is not supported; Option B is for KMS; Option D is incorrect because RDS does not allow custom init scripts. The correct approach is to use AWS KMS, which is the only supported method for TDE key management in RDS Oracle.
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
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Use Oracle Data Pump to export the data, encrypt it using CloudHSM, and import it back into RDS.
Why it's wrong here
This is not transparent encryption and is not a supported approach.
✗
Enable TDE and configure the Oracle wallet to point to the CloudHSM key.
Why it's wrong here
RDS Oracle does not support direct integration with CloudHSM for TDE.
✓
Enable TDE and use AWS KMS as the key manager by integrating with the Oracle TDE keystore.
Create a custom DB engine using a custom AMI that includes CloudHSM integration.
Why it's wrong here
RDS does not support custom AMIs.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
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.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
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
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. 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. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
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 DBS-C01 ACL questions on filtering logic and placement.
Database Security — This question tests Database Security — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Enable TDE and use AWS KMS as the key manager by integrating with the Oracle TDE keystore. — Oracle Transparent Data Encryption (TDE) can use an external hardware security module (HSM) via the Oracle Key Vault or direct integration. However, AWS CloudHSM is not directly supported by RDS for Oracle TDE. RDS Oracle supports TDE using the Oracle wallet or AWS KMS (for integrated TDE). To use CloudHSM, you would need to run Oracle on EC2, not RDS. Option A is not supported; Option B is for KMS; Option D is incorrect because RDS does not allow custom init scripts. The correct approach is to use AWS KMS, which is the only supported method for TDE key management in RDS Oracle.
What should I do if I get this DBS-C01 question wrong?
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 DBS-C01 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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 DBS-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 DBS-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.