DEA-C01 Data Operations and Support Practice Question
A data engineer is troubleshooting an Amazon Redshift cluster that has experienced a node failure. The engineer needs to ensure that the cluster is highly available and can withstand a single node failure with minimal downtime. Which TWO actions should the engineer take?
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
✓
Enable automated snapshots with cross-region copy.
Options A and E are considered correct for ensuring high availability in Amazon Redshift. Option A: Automated snapshots with cross-region copy enable recovery from a node failure by restoring data from a snapshot in another region, which reduces downtime but does not guarantee zero downtime. Option E: A multi-node cluster with RA3 node types separates compute and storage, allowing faster node replacement and minimizing downtime, though it does not eliminate it entirely. The exam expects these as the best actions among the given choices to improve availability and withstand a single node failure.
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 automated snapshots with cross-region copy.
Why this is correct
Enables recovery from a node failure by restoring from a cross-region snapshot. While it requires some downtime for restore, it is a key high-availability feature.
- ✗
Enable concurrency scaling to handle increased read traffic.
Why it's wrong here
Concurrency scaling handles increased read traffic but does not address node failure or high availability.
- ✗
Deploy the cluster as a single-node cluster for simplicity.
Why it's wrong here
A single-node cluster cannot withstand any node failure; it would cause complete downtime.
- ✗
Place the cluster in a public subnet with an internet gateway.
Why it's wrong here
Placing the cluster in a public subnet with an internet gateway is a networking configuration and does not affect node failure recovery.
- ✓
Use a multi-node cluster with RA3 node types.
Why this is correct
Provides resilience by allowing cluster operation to continue with degraded performance if one node fails, and RA3 reduces recovery time. This is a standard recommendation for high availability.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.