Question 19 of 1,711
DEA-C01 High Availability Practice Question
A data engineer is setting up a Redshift cluster and needs to ensure high availability. Which TWO actions should be taken?
⚠ Common exam trap
Candidates often assume that cross-AZ replication is available for Redshift, but it is not. The correct HA measures are cross-region snapshot copy and multi-node clusters.
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
✓
Configure cross-region snapshot copy.
For high availability in Amazon Redshift, you need to protect against data loss and downtime. Option B (configure cross-region snapshot copy) ensures that snapshots are replicated to another region, providing disaster recovery and high availability in case of a regional outage. Option E (deploy a multi-node cluster with at least two compute nodes) provides node-level redundancy; if one node fails, the workload can be redistributed. Option C (enable automatic replication across Availability Zones) is not a feature of Amazon Redshift; Redshift does not support automatic cross-AZ replication for compute nodes. Option A (concurrency scaling) improves query concurrency, not availability. Option D (single-node cluster) offers no redundancy.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable concurrency scaling.
Why it's wrong here
Concurrency scaling adds cluster capacity to handle many concurrent queries, improving performance but not high availability.
- ✓
Configure cross-region snapshot copy.
Why this is correct
Cross-region snapshot copy provides disaster recovery by replicating snapshots to another region, ensuring data availability in case of a regional outage. This is a correct action for high availability.
- ✗
Enable automatic replication across Availability Zones.
Why it's wrong here
Automatic replication across Availability Zones is not a feature of Amazon Redshift. Redshift clusters are deployed in a single AZ, so this option is incorrect.
- ✗
Use a single-node cluster to reduce complexity.
Why it's wrong here
A single-node cluster has no redundancy; if the node fails, the cluster becomes unavailable. This does not support high availability.
- ✓
Deploy a multi-node cluster with at least two compute nodes.
Why this is correct
A multi-node cluster with at least two compute nodes provides node-level redundancy, so failures can be tolerated. This is a correct action for high availability.
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 20, 2026
This DEA-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 DEA-C01 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.