- A
Store database credentials in the application configuration file.
Why wrong: Credentials should not be stored in code.
- B
Disable automated backups to reduce storage costs.
Why wrong: Disabling backups does not protect data.
- C
Use Oracle Transparent Data Encryption (TDE) for sensitive columns.
TDE provides column-level encryption.
- D
Assign a public IP address to the DB instance for easier access.
Why wrong: Public IP increases security risk.
- E
Enable encryption at rest using AWS KMS.
Encrypts data at rest.
Question 1,155 of 1,730
Protecting Sensitive Data in RDS Oracle: TDE and KMS Encryption
This DBS-C01 practice question tests your understanding of database security. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Which TWO actions should be taken to protect sensitive data in an Amazon RDS for Oracle DB instance? (Choose two.)
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
✓
Use Oracle Transparent Data Encryption (TDE) for sensitive columns.
The correct answers are C and E. Option C, using Oracle Transparent Data Encryption (TDE), encrypts sensitive data at the column level within the database. Option E, enabling encryption at rest using AWS KMS, protects data stored on disk. Option A is incorrect because storing credentials in application configuration files is insecure. Option B is incorrect because disabling automated backups does not enhance security. Option D is incorrect because assigning a public IP increases exposure to attacks.
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.
- ✗
Store database credentials in the application configuration file.
Why it's wrong here
Credentials should not be stored in code.
- ✗
Disable automated backups to reduce storage costs.
Why it's wrong here
Disabling backups does not protect data.
- ✓
Use Oracle Transparent Data Encryption (TDE) for sensitive columns.
Why this is correct
TDE provides column-level encryption.
Related concept
Standard ACLs match source addresses.
- ✗
Assign a public IP address to the DB instance for easier access.
Why it's wrong here
Public IP increases security risk.
- ✓
Enable encryption at rest using AWS KMS.
Why this is correct
Encrypts data at rest.
Related concept
Standard ACLs match source addresses.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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.
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FAQ
Questions learners often ask
What does this DBS-C01 question test?
Database Security — This question tests Database Security — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Use Oracle Transparent Data Encryption (TDE) for sensitive columns. — The correct answers are C and E. Option C, using Oracle Transparent Data Encryption (TDE), encrypts sensitive data at the column level within the database. Option E, enabling encryption at rest using AWS KMS, protects data stored on disk. Option A is incorrect because storing credentials in application configuration files is insecure. Option B is incorrect because disabling automated backups does not enhance security. Option D is incorrect because assigning a public IP increases exposure to attacks.
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 →
Same concept, more angles
1 more ways this is tested on DBS-C01
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 security administrator is setting up a new Amazon RDS for SQL Server database. The company requires that all data be encrypted at rest and in transit. Additionally, the database must be accessible only from a specific CIDR range. Which TWO actions should the administrator take? (Choose TWO.)
medium- ✓ A.Enable encryption at rest using AWS KMS.
- ✓ B.Configure a security group that allows inbound traffic from the specific CIDR range.
- C.Enable encryption in transit by modifying the RDS option group to include SSL.
- D.Modify the DB parameter group to restrict network access.
- E.Use AWS CloudHSM to manage encryption keys for the database.
Why A: Option A: Enabling encryption at rest using AWS KMS is a straightforward way to meet the encryption-at-rest requirement for RDS. Option B: Configuring a security group to allow inbound traffic from the specific CIDR range restricts network access to the database. Option C is incorrect because encryption in transit is handled by the database engine (e.g., SSL/TLS) and is not an RDS option group feature; you enable it on the client side or by modifying the DB parameter group. Option D is incorrect because DB parameter groups do not control network access; they manage database engine parameters. Option E is incorrect because AWS KMS is the default service for RDS encryption at rest; CloudHSM is an alternative for key management but not required.
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Last reviewed: Jun 20, 2026
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.
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