The answer is that no action is needed; DynamoDB global tables automatically resume replication when connectivity is restored. This is because global tables are built on a multi-master, active-active architecture where each region independently accepts writes and uses the DynamoDB Streams-based replication engine to propagate changes asynchronously. When a network partition resolves, the service automatically replays any pending writes from the stream, ensuring eventual consistency without manual intervention. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this concept tests your understanding of DynamoDB’s built-in fault tolerance versus common misconceptions about needing failover or table reconfiguration. A frequent trap is assuming you must disable and re-enable global tables after a partition, but that would cause data loss; the correct mental model is that DynamoDB handles partition recovery transparently. Remember the mnemonic: “Partition? No partition—DynamoDB’s replication just continues.”
DOP-C02 Resilient Cloud Solutions Practice Question
This DOP-C02 practice question tests your understanding of resilient cloud solutions. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 uses DynamoDB global tables with two regions. They notice that writes in one region are not replicating to the other region after a brief network partition. Which configuration will ensure replication resumes automatically?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
No action needed; DynamoDB automatically resumes replication when connectivity is restored.
Option B is correct because DynamoDB global tables automatically resume replication after a partition is resolved. Option A is incorrect because there is no failover needed; replication is handled automatically. Option C is incorrect because disabling and re-enabling global tables would cause data loss. Option D is incorrect because the issue is not a conflict but a temporary partition.
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.
✗
Use DynamoDB Streams with a Lambda function to manually replicate writes.
Why it's wrong here
This is unnecessary and complex; global tables already handle replication.
✓
No action needed; DynamoDB automatically resumes replication when connectivity is restored.
Why this is correct
DynamoDB global tables handle temporary partitions and resume replication automatically.
Related concept
Read the scenario before looking for a memorised answer.
✗
Manually fail over the table to the other region.
Why it's wrong here
Failover is not necessary; replication will resume automatically.
✗
Delete the replica table and recreate it.
Why it's wrong here
This would cause data loss and is not required.
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 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 DOP-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.
Resilient Cloud Solutions — This question tests Resilient Cloud Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: No action needed; DynamoDB automatically resumes replication when connectivity is restored. — Option B is correct because DynamoDB global tables automatically resume replication after a partition is resolved. Option A is incorrect because there is no failover needed; replication is handled automatically. Option C is incorrect because disabling and re-enabling global tables would cause data loss. Option D is incorrect because the issue is not a conflict but a temporary partition.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-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.
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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