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 plans to migrate a 10 TB on-premises SQL Server database to Amazon RDS for SQL Server. The migration must be completed within a 4-hour window. The network bandwidth is 1 Gbps. Which migration approach should they choose?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS Snowball Edge to transfer data and then perform a cutover
At 1 Gbps, transferring 10 TB over the internet would take ~22 hours, exceeding the window. AWS Snowball can physically transfer the data quickly. Option D is correct. Option A is wrong because DMS over internet is too slow. Option B is wrong because DMS over Direct Connect still limited by bandwidth. Option C is wrong because SCT does not transfer data.
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 SCT to convert schema and then export/import via native tools
Why it's wrong here
SCT does not handle data transfer; native tools also slow.
✗
Use AWS DMS over the internet
Why it's wrong here
Network bandwidth insufficient for the time window.
✗
Set up an AWS Direct Connect connection and use DMS
Why it's wrong here
Direct Connect still limited to 1 Gbps; transfer time exceeds 4 hours.
✓
Use AWS Snowball Edge to transfer data and then perform a cutover
Why this is correct
Snowball provides physical transport, meeting the time constraint.
Related concept
Static NAT maps one inside address to one outside address.
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 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.
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 PAS-C01 NAT questions on configuration and troubleshooting.
Migration — This question tests 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 Snowball Edge to transfer data and then perform a cutover — At 1 Gbps, transferring 10 TB over the internet would take ~22 hours, exceeding the window. AWS Snowball can physically transfer the data quickly. Option D is correct. Option A is wrong because DMS over internet is too slow. Option B is wrong because DMS over Direct Connect still limited by bandwidth. Option C is wrong because SCT does not transfer data.
What should I do if I get this PAS-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 PAS-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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