Question 611 of 1,730
Workload-Specific Database DesignmediumMultiple SelectObjective-mapped

DBS-C01 Workload-Specific Database Design Practice Question

This DBS-C01 practice question tests your understanding of workload-specific database design. 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.

Which THREE considerations are important when designing a database for a global, multi-Region application using Amazon DynamoDB Global Tables? (Select THREE.)

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

Application tolerance for eventually consistent reads

Option C is correct because Amazon DynamoDB Global Tables use an eventually consistent model for cross-region replication. Applications must tolerate eventual consistency, as updates made in one region are propagated to other regions asynchronously, typically within one second or less. This design trade-off enables high availability and low-latency writes across multiple regions.

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.

  • Using a single write region to avoid conflicts

    Why it's wrong here

    Global Tables are designed for multi-region writes.

  • Strongly consistent reads across regions

    Why it's wrong here

    Global Tables do not support strongly consistent cross-region reads.

  • Application tolerance for eventually consistent reads

    Why this is correct

    Cross-region replication is asynchronous; reads may be eventually consistent.

    Related concept

    Read the scenario before looking for a memorised answer.

  • Provisioning sufficient write capacity in each region

    Why this is correct

    Each region handles its own writes independently.

    Related concept

    Read the scenario before looking for a memorised answer.

  • Conflict resolution using last writer wins

    Why this is correct

    Global Tables use last writer wins to resolve concurrent updates.

    Related concept

    Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The DBS-C01 exam often tests the misconception that Global Tables require a single write region or support cross-region strongly consistent reads, when in fact they are designed for multi-region writes with eventual consistency and automatic conflict resolution via last writer wins.

Detailed technical explanation

How to think about this question

DynamoDB Global Tables leverage a multi-master replication protocol based on DynamoDB Streams and a last-writer-wins (LWW) conflict resolution mechanism using a timestamp-based vector clock. Each replica region maintains its own write capacity, and replication is asynchronous, meaning that read-after-write consistency across regions is not guaranteed. In practice, this means a user updating their profile in us-east-1 might not see that change immediately when reading from eu-west-1, requiring application-level handling of stale data.

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

An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.

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.

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FAQ

Questions learners often ask

What does this DBS-C01 question test?

Workload-Specific Database Design — This question tests Workload-Specific Database Design — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Application tolerance for eventually consistent reads — Option C is correct because Amazon DynamoDB Global Tables use an eventually consistent model for cross-region replication. Applications must tolerate eventual consistency, as updates made in one region are propagated to other regions asynchronously, typically within one second or less. This design trade-off enables high availability and low-latency writes across multiple regions.

What should I do if I get this DBS-C01 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jul 4, 2026

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This DBS-C01 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 DBS-C01 exam.