The answer is to enable automated snapshots with a retention period of 1 day. This is correct because Amazon Redshift automated snapshots capture incremental changes every 8 hours or every 5 GB of data changes, storing them in Amazon S3 for disaster recovery. By setting a 1-day retention, you ensure the cluster can be restored to the most recent snapshot, limiting potential data loss to at most the snapshot interval—perfect for a reporting workload that tolerates a few minutes of downtime. On the AWS Certified Data Engineer Associate DEA-C01 exam, this question tests your understanding of balancing recovery point objectives (RPO) with cost; a common trap is choosing manual snapshots or longer retention, which either adds operational overhead or unnecessary storage costs. Remember the memory tip: “8 hours or 5 gigs—snapshots save your rigs,” highlighting that automated snapshots are the hands-off, cost-effective choice for minimal data loss.
DEA-C01 Data Operations and Support Practice Question
This DEA-C01 practice question tests your understanding of data operations and support. 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 data engineer needs to ensure that a Redshift cluster can recover from a failure with minimal data loss. The cluster is used for reporting and can tolerate a few minutes of downtime. Which feature should the engineer enable?
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 a retention period of 1 day.
Automated snapshots in Amazon Redshift are taken at regular intervals (default every 8 hours or 5 GB of data changes) and retained for a specified period. Enabling automated snapshots with a retention period of 1 day ensures that, in the event of a failure, the cluster can be restored to the most recent snapshot, minimizing data loss to at most the snapshot interval. This aligns with the requirement for minimal data loss and tolerance for a few minutes of downtime, as restoring from a snapshot takes time but preserves recent data.
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.
✗
Configure cross-region snapshot copy.
Why it's wrong here
Cross-region replication is for disaster recovery, not for reducing data loss in the primary region.
✗
Take manual snapshots every hour.
Why it's wrong here
Manual snapshots are not automated and may be missed.
✗
Enable Multi-AZ deployment.
Why it's wrong here
Redshift does not support Multi-AZ; it is a single-AZ service.
✓
Enable automated snapshots with a retention period of 1 day.
Why this is correct
Automated snapshots allow recovery to any point within the retention period.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Multi-AZ (a feature for RDS, not Redshift) with high availability, or assume manual snapshots are more reliable than automated ones, when in fact automated snapshots with a short retention period provide the best balance of minimal data loss and operational simplicity for Redshift.
Detailed technical explanation
How to think about this question
Redshift automated snapshots are stored in Amazon S3 and are incremental, meaning only changes since the last snapshot are saved, reducing storage costs and restore times. The snapshot schedule can be customized via the `automated_snapshot_retention_period` parameter (in days) and the `snapshot_copy_grant` for cross-region copies, but the core recovery mechanism relies on the most recent automated snapshot. In a real-world scenario, if a cluster fails due to hardware issues, restoring from the latest automated snapshot (e.g., taken 1 hour ago) results in data loss of up to 1 hour, which is acceptable for reporting workloads that can tolerate a few minutes of downtime but not hours.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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.
Data Operations and Support — This question tests Data Operations and Support — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable automated snapshots with a retention period of 1 day. — Automated snapshots in Amazon Redshift are taken at regular intervals (default every 8 hours or 5 GB of data changes) and retained for a specified period. Enabling automated snapshots with a retention period of 1 day ensures that, in the event of a failure, the cluster can be restored to the most recent snapshot, minimizing data loss to at most the snapshot interval. This aligns with the requirement for minimal data loss and tolerance for a few minutes of downtime, as restoring from a snapshot takes time but preserves recent data.
What should I do if I get this DEA-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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Question Discussion
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