- A
Global tables use asynchronous replication, introducing unavoidable replication lag.
Replication between regions is eventually consistent, meaning there can be a delay before data appears in other regions.
- B
The developer must use DynamoDB Streams to capture changes and replicate them separately.
Why wrong: Global tables automatically replicate using the same technology; adding custom replication is unnecessary and does not explain the behavior.
- C
The developer must enable strong consistency reads on the replica table.
Why wrong: Strong consistency reads are not available for global table replicas; they are only supported for the table in the region where the read is performed and only for that table's own data.
- D
The global table must be configured with write forwarding.
Why wrong: Write forwarding ensures writes are applied to the primary region but does not affect read consistency across regions.
DVA-C02 Development with AWS Services Practice Question
This DVA-C02 practice question tests your understanding of development with aws services. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 developer is building a multi-region application using Amazon DynamoDB global tables. The application needs to read data from a replica table in a different region shortly after a write in the primary region. The developer notices that reads sometimes return stale data. Which of the following explains this behavior?
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
Global tables use asynchronous replication, introducing unavoidable replication lag.
Amazon DynamoDB global tables use asynchronous replication to propagate writes from one region to all other replica tables. This means that after a write in the primary region, there is an inherent replication lag (typically sub-second but can be higher under load or network issues) before the change is visible in other regions. The developer observes stale reads because the read is hitting a replica that has not yet received the update, which is expected behavior for eventually consistent reads on global tables.
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.
- ✓
Global tables use asynchronous replication, introducing unavoidable replication lag.
Why this is correct
Replication between regions is eventually consistent, meaning there can be a delay before data appears in other regions.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The developer must use DynamoDB Streams to capture changes and replicate them separately.
Why it's wrong here
Global tables automatically replicate using the same technology; adding custom replication is unnecessary and does not explain the behavior.
- ✗
The developer must enable strong consistency reads on the replica table.
Why it's wrong here
Strong consistency reads are not available for global table replicas; they are only supported for the table in the region where the read is performed and only for that table's own data.
- ✗
The global table must be configured with write forwarding.
Why it's wrong here
Write forwarding ensures writes are applied to the primary region but does not affect read consistency across regions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume DynamoDB global tables provide immediate consistency across regions (like synchronous replication) or that they can simply switch to strong consistency reads on replicas, but the exam tests the understanding that global tables are eventually consistent and that strong consistency is not available on replica tables.
Detailed technical explanation
How to think about this question
Under the hood, DynamoDB global tables rely on the DynamoDB Streams-based replication engine to asynchronously replicate writes across regions, with each replica table maintaining its own local copy. The replication lag is influenced by factors such as inter-region network latency, write throughput, and the number of replicas; in practice, it is typically under one second but can occasionally exceed that during regional outages or high write bursts. A real-world scenario where this matters is a leaderboard application where a user's score update in us-east-1 must be visible in eu-west-1 within seconds—developers must design for eventual consistency or use a single-region write approach with cross-region read routing.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Development with AWS Services — study guide chapter
Learn the concepts, then practise the questions
- →
Development with AWS Services practice questions
Targeted practice on this topic area only
- →
All DVA-C02 questions
1,616 questions across all exam domains
- →
AWS Certified Developer Associate DVA-C02 study guide
Full concept coverage aligned to exam objectives
- →
DVA-C02 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related DVA-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Development with AWS Services practice questions
Practise DVA-C02 questions linked to Development with AWS Services.
Security practice questions
Practise DVA-C02 questions linked to Security.
Deployment practice questions
Practise DVA-C02 questions linked to Deployment.
Troubleshooting and Optimization practice questions
Practise DVA-C02 questions linked to Troubleshooting and Optimization.
DVA-C02 fundamentals practice questions
Practise DVA-C02 questions linked to DVA-C02 fundamentals.
DVA-C02 scenario practice questions
Practise DVA-C02 questions linked to DVA-C02 scenario.
DVA-C02 troubleshooting practice questions
Practise DVA-C02 questions linked to DVA-C02 troubleshooting.
Practice this exam
Start a free DVA-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 DVA-C02 question test?
Development with AWS Services — This question tests Development with AWS Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Global tables use asynchronous replication, introducing unavoidable replication lag. — Amazon DynamoDB global tables use asynchronous replication to propagate writes from one region to all other replica tables. This means that after a write in the primary region, there is an inherent replication lag (typically sub-second but can be higher under load or network issues) before the change is visible in other regions. The developer observes stale reads because the read is hitting a replica that has not yet received the update, which is expected behavior for eventually consistent reads on global tables.
What should I do if I get this DVA-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: "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 →
Last reviewed: Jun 11, 2026
This DVA-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 DVA-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.