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 500 GB and has a 4-hour downtime window. Which AWS service should be used to perform the migration with minimal downtime?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS Database Migration Service (DMS)
Option B is correct because AWS DMS supports ongoing replication to minimize downtime during migration. Option A is wrong because AWS Snowball is for large data transfers but does not support ongoing replication. Option C is wrong because S3 is not a migration tool. Option D is wrong because RDS does not natively support Oracle Data Pump directly; DMS is the recommended service.
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.
✓
AWS Database Migration Service (DMS)
Why this is correct
DMS can perform a one-time full load and then ongoing replication to minimize downtime.
Related concept
Static NAT maps one inside address to one outside address.
✗
Oracle Data Pump using Amazon RDS option groups
Why it's wrong here
While Oracle Data Pump can export/import, it is not managed by AWS and typically requires longer downtime.
✗
AWS Snowball Edge
Why it's wrong here
Snowball can transfer data offline but does not support ongoing replication, so downtime would be longer.
✗
Amazon S3 Transfer Acceleration
Why it's wrong here
S3 is not a migration tool and does not support database replication.
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 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: AWS Database Migration Service (DMS) — Option B is correct because AWS DMS supports ongoing replication to minimize downtime during migration. Option A is wrong because AWS Snowball is for large data transfers but does not support ongoing replication. Option C is wrong because S3 is not a migration tool. Option D is wrong because RDS does not natively support Oracle Data Pump directly; DMS is the recommended service.
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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