DBS-C01 Deployment and Migration Practice Question
This DBS-C01 practice question tests your understanding of deployment and migration. 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 a 500 GB Oracle database to Amazon RDS for Oracle. The migration must complete within a 4-hour downtime window. The network bandwidth is 1 Gbps. Which migration approach minimizes the migration time?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS DMS to perform a full load of the database to RDS.
Option D is correct because AWS DMS can perform a full load plus ongoing replication, but given the bandwidth and data size, using a direct connection (DX) or SCT is not faster. However, the best approach is to use DMS with full load only if replication is not needed; DMS can load data faster than native export/import. Option A is wrong because native export/import is slower and more manual. Option B is wrong because SCT is for schema conversion only. Option C is wrong because DataSync is for files, not databases.
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.
✗
Use AWS Schema Conversion Tool (SCT) to convert the schema, then use AWS DMS for data migration.
Why it's wrong here
SCT is for schema conversion, not data migration; DMS alone is used for data.
✗
Use Oracle Data Pump to export and import the database.
Why it's wrong here
Data Pump export/import can be slow and may not complete within 4 hours over 1 Gbps.
✓
Use AWS DMS to perform a full load of the database to RDS.
Why this is correct
DMS can efficiently migrate data directly to RDS, minimizing migration time.
Related concept
Static NAT maps one inside address to one outside address.
✗
Use AWS DataSync to copy the database files to Amazon S3, then restore to RDS.
Why it's wrong here
DataSync is for file transfers, not database migration; restoring from S3 is not supported by RDS for Oracle.
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.
Deployment and Migration — This question tests Deployment and Migration — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Use AWS DMS to perform a full load of the database to RDS. — Option D is correct because AWS DMS can perform a full load plus ongoing replication, but given the bandwidth and data size, using a direct connection (DX) or SCT is not faster. However, the best approach is to use DMS with full load only if replication is not needed; DMS can load data faster than native export/import. Option A is wrong because native export/import is slower and more manual. Option B is wrong because SCT is for schema conversion only. Option C is wrong because DataSync is for files, not databases.
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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