- A
Amazon DynamoDB
Amazon DynamoDB is a NoSQL database that delivers single-digit millisecond latency, is fully managed, and replicates data across multiple AZs automatically. It is ideal for stateful microservices.
- B
Amazon S3
Why wrong: Amazon S3 has higher latency and is not designed for sub-millisecond access patterns. It is better suited for object storage, not stateful data requiring low-latency reads/writes.
- C
Amazon RDS with Multi-AZ
Why wrong: Amazon RDS provides relational databases with Multi-AZ for high availability, but it has higher latency than DynamoDB for simple key-value operations and is not as scalable.
- D
Amazon ElastiCache for Redis
Why wrong: Amazon ElastiCache is an in-memory cache, not a durable data store by default. While it can be made durable with persistence, it is typically used for caching, not as the primary data store.
Quick Answer
The answer is Amazon DynamoDB, as it is purpose-built as a low-latency durable stateful data store for microservices, delivering consistent single-digit millisecond response times for key-value and document queries. This performance is achieved through its distributed architecture, which automatically replicates data across multiple Availability Zones for high durability and availability without any manual configuration. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this question tests your ability to distinguish between storage services based on latency and durability requirements—a common trap is choosing ElastiCache for speed, but its in-memory nature lacks default durability, or selecting RDS for familiarity, which introduces higher latency for simple lookups. Remember the memory tip: “DynamoDB for durable, low-latency state; ElastiCache for speed without persistence.”
SAP-C02 Design for New Solutions Practice Question
This SAP-C02 practice question tests your understanding of design for new solutions. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 designing a new microservices application on AWS. Each microservice needs to store and retrieve stateful data with low latency (single-digit milliseconds). The data must be durable and highly available across multiple Availability Zones. Which AWS service should be used for the primary data store for each microservice?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"primary"Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
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
Amazon DynamoDB
Option C is correct because Amazon DynamoDB provides single-digit millisecond latency, automatic replication across multiple AZs, and is fully managed. Option A is wrong because Amazon S3 has higher latency and is not ideal for low-latency stateful data. Option B is wrong because Amazon RDS has higher latency than DynamoDB for simple key-value lookups. Option D is wrong because Amazon ElastiCache is in-memory and not durable by default without additional configuration.
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 DynamoDB
Why this is correct
Amazon DynamoDB is a NoSQL database that delivers single-digit millisecond latency, is fully managed, and replicates data across multiple AZs automatically. It is ideal for stateful microservices.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon S3
Why it's wrong here
Amazon S3 has higher latency and is not designed for sub-millisecond access patterns. It is better suited for object storage, not stateful data requiring low-latency reads/writes.
- ✗
Amazon RDS with Multi-AZ
Why it's wrong here
Amazon RDS provides relational databases with Multi-AZ for high availability, but it has higher latency than DynamoDB for simple key-value operations and is not as scalable.
- ✗
Amazon ElastiCache for Redis
Why it's wrong here
Amazon ElastiCache is an in-memory cache, not a durable data store by default. While it can be made durable with persistence, it is typically used for caching, not as the primary data store.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
- →
Design for New Solutions — study guide chapter
Learn the concepts, then practise the questions
- →
Design for New Solutions practice questions
Targeted practice on this topic area only
- →
All SAP-C02 questions
1,746 questions across all exam domains
- →
AWS Certified Solutions Architect Professional SAP-C02 study guide
Full concept coverage aligned to exam objectives
- →
SAP-C02 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related SAP-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Design Solutions for Organizational Complexity practice questions
Practise SAP-C02 questions linked to Design Solutions for Organizational Complexity.
Design for New Solutions practice questions
Practise SAP-C02 questions linked to Design for New Solutions.
Continuous Improvement for Existing Solutions practice questions
Practise SAP-C02 questions linked to Continuous Improvement for Existing Solutions.
Accelerate Workload Migration and Modernization practice questions
Practise SAP-C02 questions linked to Accelerate Workload Migration and Modernization.
SAA-C03 VPC practice questions
Practise SAP-C02 questions linked to SAA-C03 VPC.
SAA-C03 S3 lifecycle policy questions
Practise SAP-C02 questions linked to SAA-C03 S3 lifecycle policy questions.
SAA-C03 RDS Multi-AZ questions
Practise SAP-C02 questions linked to SAA-C03 RDS Multi-AZ questions.
SAA-C03 IAM policy practice questions
Practise SAP-C02 questions linked to SAA-C03 IAM policy.
SAA-C03 Route 53 failover questions
Practise SAP-C02 questions linked to SAA-C03 Route 53 failover questions.
SAA-C03 CloudFront practice questions
Practise SAP-C02 questions linked to SAA-C03 CloudFront.
SAA-C03 NAT gateway questions
Practise SAP-C02 questions linked to SAA-C03 NAT gateway questions.
SAA-C03 VPC endpoint questions
Practise SAP-C02 questions linked to SAA-C03 VPC endpoint questions.
Practice this exam
Start a free SAP-C02 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this SAP-C02 question test?
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 DynamoDB — Option C is correct because Amazon DynamoDB provides single-digit millisecond latency, automatic replication across multiple AZs, and is fully managed. Option A is wrong because Amazon S3 has higher latency and is not ideal for low-latency stateful data. Option B is wrong because Amazon RDS has higher latency than DynamoDB for simple key-value lookups. Option D is wrong because Amazon ElastiCache is in-memory and not durable by default without additional configuration.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
More SAP-C02 practice questions
- Match each AWS compute service to its use case.
- A company is designing a new microservices architecture on AWS. They need a solution for service discovery that allows s…
- A company has a centralized logging account and multiple application accounts. All VPC Flow Logs are sent to a central S…
- A company is implementing AWS Control Tower to manage a multi-account environment. The security team needs to ensure tha…
- A company is designing a cross-account network architecture. The security team requires that all traffic between VPCs in…
- A company is using AWS Organizations with multiple accounts. The central IT team wants to deploy a set of common VPCs in…
Last reviewed: Jun 20, 2026
This SAP-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAP-C02 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.