- A
Use AWS Database Migration Service (AWS DMS) to continuously replicate the database to a smaller RDS instance for testing.
Why wrong: AWS DMS replicates databases but does not test the entire SAP application stack.
- B
Use AWS Elastic Disaster Recovery to replicate the on-premises servers to a staging area and launch test instances in a sandbox VPC.
AWS Elastic Disaster Recovery provides a cost-effective way to test migration with non-production instances.
- C
Provision a full production-sized infrastructure in a separate AWS account and use AWS DMS to replicate the database.
Why wrong: Full production-sized infrastructure is costly for a test environment.
- D
Use AWS Migration Hub to track the migration progress and perform a trial migration using AWS CloudFormation templates.
Why wrong: AWS Migration Hub tracks but does not provide a sandbox environment for testing.
PAS-C01 Migration Practice Question
This PAS-C01 practice question tests your understanding of 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 its SAP environment to AWS and wants to test the migration process before the final cutover. The company has a limited budget for the test environment. Which approach is MOST cost-effective?
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
Use AWS Elastic Disaster Recovery to replicate the on-premises servers to a staging area and launch test instances in a sandbox VPC.
AWS Elastic Disaster Recovery allows quick, cost-effective testing by replicating the source and launching instances in a sandbox network. Option A is wrong because spinning up full production-sized instances is expensive. Option B is wrong because AWS DMS is for databases, not full systems. Option D is wrong because AWS Migration Hub orchestrates but doesn't provide a sandbox environment for testing.
Key principle: OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
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 Database Migration Service (AWS DMS) to continuously replicate the database to a smaller RDS instance for testing.
Why it's wrong here
AWS DMS replicates databases but does not test the entire SAP application stack.
- ✓
Use AWS Elastic Disaster Recovery to replicate the on-premises servers to a staging area and launch test instances in a sandbox VPC.
Why this is correct
AWS Elastic Disaster Recovery provides a cost-effective way to test migration with non-production instances.
Related concept
OSPF neighbours must agree on key parameters.
- ✗
Provision a full production-sized infrastructure in a separate AWS account and use AWS DMS to replicate the database.
Why it's wrong here
Full production-sized infrastructure is costly for a test environment.
- ✗
Use AWS Migration Hub to track the migration progress and perform a trial migration using AWS CloudFormation templates.
Why it's wrong here
AWS Migration Hub tracks but does not provide a sandbox environment for testing.
Common exam traps
Common exam trap: OSPF can fail even when IP connectivity looks correct
OSPF neighbour formation depends on matching areas, timers, network type, authentication and passive-interface behaviour. Do not choose an answer only because the devices can ping.
Detailed technical explanation
How to think about this question
OSPF questions usually test the details that control adjacency and route selection. Read the neighbour state, area, router ID and interface configuration before deciding what is wrong.
KKey Concepts to Remember
- OSPF neighbours must agree on key parameters.
- Router ID selection can affect neighbour relationships and LSDB output.
- OSPF cost influences the preferred path.
- A route can appear in OSPF information but not become the installed route.
TExam Day Tips
- Check area mismatch first when OSPF adjacency fails.
- Review passive interfaces when a network is advertised but no neighbour forms.
- Use show ip ospf neighbor and show ip route clues carefully.
Key takeaway
OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related PAS-C01 OSPF questions on adjacency and route selection.
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
Migration — This question tests Migration — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: Use AWS Elastic Disaster Recovery to replicate the on-premises servers to a staging area and launch test instances in a sandbox VPC. — AWS Elastic Disaster Recovery allows quick, cost-effective testing by replicating the source and launching instances in a sandbox network. Option A is wrong because spinning up full production-sized instances is expensive. Option B is wrong because AWS DMS is for databases, not full systems. Option D is wrong because AWS Migration Hub orchestrates but doesn't provide a sandbox environment for testing.
What should I do if I get this PAS-C01 question wrong?
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related PAS-C01 OSPF questions on adjacency and route selection.
What is the key concept behind this question?
OSPF neighbours must agree on key parameters.
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Last reviewed: Jun 20, 2026
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