DBS-C01 Management and Operations Practice Question
This DBS-C01 practice question tests your understanding of management and operations. 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 migrating an on-premises Oracle database to Amazon RDS for Oracle. The database is 2 TB in size and has a 24/7 uptime requirement. The migration must have minimal downtime and support ongoing replication. Which THREE services or features should the specialist use to accomplish this?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
An AWS DMS replication instance.
Options A, B, and D are correct. Option A: AWS DMS can perform ongoing replication with change data capture. Option B: AWS SCT helps convert the schema. Option D: A replication instance is required for DMS. Option C is wrong because RDS Oracle does not support cross-region automated backups as a migration tool. Option E is wrong because RDS Oracle does not support native Oracle Data Guard for cross-region replication.
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.
✗
Oracle Data Guard to replicate to RDS.
Why it's wrong here
RDS does not support Oracle Data Guard.
✗
Amazon RDS cross-Region automated backups.
Why it's wrong here
Automated backups are for disaster recovery, not migration.
✓
An AWS DMS replication instance.
Why this is correct
A replication instance is required to run DMS tasks.
Related concept
Static NAT maps one inside address to one outside address.
✓
AWS Schema Conversion Tool (AWS SCT).
Why this is correct
SCT converts Oracle schema to RDS Oracle compatible format.
Related concept
Static NAT maps one inside address to one outside address.
✓
AWS Database Migration Service (AWS DMS) with change data capture (CDC).
Why this is correct
DMS with CDC allows ongoing replication with minimal downtime.
Related concept
Static NAT maps one inside address to one outside address.
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 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. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. 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 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.
Management and Operations — This question tests Management and Operations — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: An AWS DMS replication instance. — Options A, B, and D are correct. Option A: AWS DMS can perform ongoing replication with change data capture. Option B: AWS SCT helps convert the schema. Option D: A replication instance is required for DMS. Option C is wrong because RDS Oracle does not support cross-region automated backups as a migration tool. Option E is wrong because RDS Oracle does not support native Oracle Data Guard for cross-region replication.
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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