SAP-C02 Design for New Solutions Practice Question
This SAP-C02 practice question tests your understanding of design for new solutions. 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 legacy monolithic application to AWS. The application currently uses a shared filesystem for storing user-uploaded documents. The company wants to decouple storage and compute, ensure high durability, and minimize operational overhead. Which AWS service should the company use to replace the shared filesystem?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon S3
Amazon S3 is the correct choice because it provides a highly durable (99.999999999% durability), scalable, and fully managed object storage service that decouples storage from compute. Unlike a shared filesystem, S3 allows multiple compute instances (e.g., EC2, Lambda) to access the same documents via HTTP/HTTPS APIs without needing a mounted filesystem, minimizing operational overhead. It also supports features like versioning, lifecycle policies, and cross-region replication, making it ideal for user-uploaded documents in a migration scenario.
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.
✗
Amazon EBS
Why it's wrong here
EBS is block storage and cannot be shared across multiple instances without additional configuration.
✗
Amazon EFS
Why it's wrong here
EFS is a file system but is not as cost-effective for large-scale object storage and may introduce unnecessary overhead.
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Amazon FSx for Windows File Server
Why it's wrong here
FSx is for Windows environments and increases management overhead.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse shared filesystem requirements with network-attached storage (NAS) services like EFS or FSx, overlooking that object storage (S3) is the most durable, scalable, and operationally lightweight option for user-uploaded documents when compute and storage need to be decoupled.
Detailed technical explanation
How to think about this question
Amazon S3 uses a flat key-value store architecture where objects are stored in buckets and accessed via RESTful APIs (e.g., GET, PUT, DELETE), eliminating the need for a mounted filesystem and allowing concurrent access from thousands of clients. Under the hood, S3 automatically replicates data across multiple Availability Zones within a region to achieve 99.999999999% durability, and it supports event notifications (e.g., S3 Event Notifications) to trigger AWS Lambda for post-upload processing. In a real-world migration, this decoupling enables compute resources to be scaled independently (e.g., using Spot Instances) without worrying about filesystem locks or capacity planning.
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 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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Design for New Solutions — This question tests Design for New Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Amazon S3 — Amazon S3 is the correct choice because it provides a highly durable (99.999999999% durability), scalable, and fully managed object storage service that decouples storage from compute. Unlike a shared filesystem, S3 allows multiple compute instances (e.g., EC2, Lambda) to access the same documents via HTTP/HTTPS APIs without needing a mounted filesystem, minimizing operational overhead. It also supports features like versioning, lifecycle policies, and cross-region replication, making it ideal for user-uploaded documents in a migration scenario.
What should I do if I get this SAP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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