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 200 GB Oracle database to Amazon RDS for Oracle. Which TWO steps should be taken to ensure a successful migration? (Choose two.)
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 with full load and ongoing replication.
Options B and D are correct. Using AWS SCT helps convert the schema and identify potential issues. Using AWS DMS with ongoing replication minimizes downtime. Option A is wrong because Oracle to RDS for Oracle is homogeneous; DMS supports it. Option C is wrong because manual export/import is error-prone and causes downtime. Option E is wrong because encrypting the source database adds complexity and may not be necessary.
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.
✗
Enable TDE encryption on the source database before migration.
Why it's wrong here
Unnecessary and may complicate migration.
✗
Use AWS DMS only for heterogeneous migrations; use Oracle Data Pump instead.
Why it's wrong here
DMS supports homogeneous migrations like Oracle to Oracle.
✓
Use AWS DMS with full load and ongoing replication.
Why this is correct
Minimizes downtime by replicating ongoing changes.
Related concept
Standard ACLs match source addresses.
✗
Export the database using expdp and import using impdp.
Why it's wrong here
Causes downtime and does not handle ongoing changes.
✓
Use AWS Schema Conversion Tool (SCT) to assess and convert the schema.
Why this is correct
SCT helps identify compatibility issues and convert schema.
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 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. 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. 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 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.
Deployment and Migration — This question tests Deployment and Migration — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Use AWS DMS with full load and ongoing replication. — Options B and D are correct. Using AWS SCT helps convert the schema and identify potential issues. Using AWS DMS with ongoing replication minimizes downtime. Option A is wrong because Oracle to RDS for Oracle is homogeneous; DMS supports it. Option C is wrong because manual export/import is error-prone and causes downtime. Option E is wrong because encrypting the source database adds complexity and may not be necessary.
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.
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Question Discussion
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