- A
The size of the database and available network bandwidth
Large databases may require Snowball; bandwidth affects transfer time.
- B
The version of the Oracle client used by applications
Why wrong: Client version is usually compatible.
- C
The required downtime tolerance
Minimal downtime requires CDC; offline is simpler but longer downtime.
- D
The number of stored procedures in the database
Why wrong: Stored procedures are typically supported; not a major factor.
- E
The number of indexes on the source database
Why wrong: Indexes are migrated automatically; not a key factor.
Question 1,391 of 1,730
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.
Which TWO factors should be considered when selecting a migration method from on-premises Oracle to Amazon RDS for Oracle?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The size of the database and available network bandwidth
Option A is correct because the size of the database directly impacts the time required for data transfer, and available network bandwidth determines the maximum throughput for that transfer. For large databases over limited bandwidth, full offline migration may be impractical, requiring incremental or online methods like AWS DMS with ongoing replication to minimize transfer time.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The size of the database and available network bandwidth
Why this is correct
Large databases may require Snowball; bandwidth affects transfer time.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The version of the Oracle client used by applications
Why it's wrong here
Client version is usually compatible.
- ✓
The required downtime tolerance
Why this is correct
Minimal downtime requires CDC; offline is simpler but longer downtime.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The number of stored procedures in the database
Why it's wrong here
Stored procedures are typically supported; not a major factor.
- ✗
The number of indexes on the source database
Why it's wrong here
Indexes are migrated automatically; not a key factor.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse factors affecting migration method selection with factors affecting post-migration performance or compatibility, such as client versions or object counts, which are not relevant to the method choice.
Detailed technical explanation
How to think about this question
When migrating to Amazon RDS for Oracle, the two primary factors are database size and network bandwidth because they determine whether an offline method (e.g., using Oracle Data Pump with a full export/import) is feasible within the allowed downtime window. For example, a 10 TB database over a 1 Gbps link would take over 22 hours for a full transfer, often exceeding downtime tolerance, necessitating an online method like AWS DMS with Change Data Capture (CDC) to replicate ongoing changes while keeping the source operational.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this DBS-C01 question test?
Deployment and Migration — This question tests Deployment and Migration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The size of the database and available network bandwidth — Option A is correct because the size of the database directly impacts the time required for data transfer, and available network bandwidth determines the maximum throughput for that transfer. For large databases over limited bandwidth, full offline migration may be impractical, requiring incremental or online methods like AWS DMS with ongoing replication to minimize transfer time.
What should I do if I get this DBS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jul 4, 2026
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