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DEA-C01 Data Operations and Support Practice Question

Network Topology
$ aws redshift describe-clusterscluster-identifier my-redshift-clusterRefer to the exhibit."Clusters": ["ClusterIdentifier": "my-redshift-cluster","NumberOfNodes": 4,"NodeType": "dc2.large","ClusterStatus": "available","Encrypted": true,"VpcId": "vpc-12345678","ClusterSubnetGroupName": "default","AutomatedSnapshotRetentionPeriod": 1

Refer to the exhibit. A data engineer is reviewing the configuration of an Amazon Redshift cluster. The engineer wants to ensure that the cluster can be restored to a point in time up to 35 days in the past. Based on the exhibit, what change is needed?

⚠ Common exam trap

DEA-C01 often tests the default and maximum snapshot retention periods, leading candidates to assume the default is already 35 days or that other cluster settings affect retention.

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

✓

Increase the automated snapshot retention period to 35 days.

Amazon Redshift automated snapshots have a default retention period of 1 day, but can be configured up to 35 days. To restore to a point in time up to 35 days, the retention period must be increased to 35 days.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✓

    Increase the automated snapshot retention period to 35 days.

    Why this is correct

    Automated snapshots are the mechanism that supports point-in-time restoration in Amazon Redshift. The retention period defaults to one day and can be extended to a maximum of 35 days, so raising it to 35 days directly satisfies the stated requirement to restore to any point within that window.

  • ✗

    Change the cluster subnet group to a custom one.

    Why it's wrong here

    The subnet group determines where cluster nodes are placed in a VPC and has no bearing on backup retention. Custom subnet groups are the correct choice when the cluster must sit in specific subnets or availability zones, not when extending the automated snapshot retention window.

  • ✗

    Enable encryption on the cluster.

    Why it's wrong here

    Encryption at rest protects stored data and snapshots but does not govern how long automated snapshots are retained. Enabling encryption is correct when compliance requires KMS-protected storage, not when the retention period must reach 35 days.

  • ✗

    Increase the number of nodes to 6.

    Why it's wrong here

    Node count affects query processing capacity, not backup retention; the 35-day restore window is governed by the cluster's automated snapshot retention period, which must be raised to 35 days. Adding nodes would be the right change when the requirement is more compute or storage throughput.

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JA

Written and reviewed by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

Last reviewed September 2026 · checked against the official Amazon Web Services exam blueprint

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.