The correct answer is to create a custom DB parameter group with the encryption parameters set to REQUIRED. This works because Amazon RDS for Oracle supports Oracle Native Network Encryption (NNE) through its managed parameter group interface, where you set SQLNET.ENCRYPTION_SERVER to REQUIRED and specify the desired SQLNET.ENCRYPTION_TYPES, rather than allowing direct edits to the sqlnet.ora file. On the AWS Certified Database Specialty DBS-C01 exam, this question tests your understanding that RDS abstracts OS-level configuration files, so you must use parameter groups to enforce network encryption—a common trap is confusing encryption at rest or IAM authentication with network-level encryption. Remember that NNE is about data in transit, not at rest, and the keyword "REQUIRED" forces the server to reject unencrypted connections. A useful memory tip: "NNE on RDS means Parameter Group, not sqlnet.ora edits."
DBS-C01 Database Security Practice Question
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.
A company is migrating an on-premises Oracle database to Amazon RDS for Oracle. The security team requires that all connections to the database use Oracle Native Network Encryption (NNE). How should this be configured?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a custom DB parameter group with the encryption parameters set to REQUIRED.
RDS for Oracle supports NNE by modifying the custom DB parameter group to set the SQLNET.ENCRYPTION_SERVER and SQLNET.ENCRYPTION_TYPES parameters. Option A is wrong because enabling encryption at rest does not affect network encryption. Option B is wrong because RDS does not allow direct modification of sqlnet.ora files; you must use parameter groups. Option C is wrong because IAM database authentication does not encrypt the connection.
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.
✗
Enable IAM database authentication.
Why it's wrong here
IAM authentication does not encrypt connections.
✗
Modify the sqlnet.ora file on the RDS instance to require encryption.
Why it's wrong here
RDS does not allow direct OS file access.
✓
Create a custom DB parameter group with the encryption parameters set to REQUIRED.
Why this is correct
This configures NNE through parameter group.
Related concept
Static NAT maps one inside address to one outside address.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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 DBS-C01 NAT questions on configuration and troubleshooting.
Database Security — This question tests Database Security — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Create a custom DB parameter group with the encryption parameters set to REQUIRED. — RDS for Oracle supports NNE by modifying the custom DB parameter group to set the SQLNET.ENCRYPTION_SERVER and SQLNET.ENCRYPTION_TYPES parameters. Option A is wrong because enabling encryption at rest does not affect network encryption. Option B is wrong because RDS does not allow direct modification of sqlnet.ora files; you must use parameter groups. Option C is wrong because IAM database authentication does not encrypt the connection.
What should I do if I get this DBS-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 DBS-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.
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Question Discussion
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