The answer is to create a snapshot of the existing cluster and restore it to a new cluster with encryption enabled. This is the only viable method because Amazon Redshift does not support enabling encryption at rest on a running cluster; encryption is a cluster-level attribute that must be set at launch time. By taking a snapshot—which captures the cluster’s data and metadata—and restoring it to a new encrypted cluster, you effectively migrate all data into an encrypted environment without any manual data movement. On the AWS Certified Data Engineer Associate DEA-C01 exam, this scenario tests your understanding of Redshift’s immutable encryption architecture and the snapshot-restore workflow, a common trap being the mistaken belief that you can modify an existing cluster’s encryption settings via parameter groups or configuration changes. Remember the key distinction: encryption is a creation-time decision, not a runtime toggle. A useful memory tip is “snap, restore, encrypt”—you cannot flip the switch, so you must rebuild the house with the lock already installed.
DEA-C01 Data Security and Governance Practice Question
This DEA-C01 practice question tests your understanding of data security and governance. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 company is using Amazon Redshift for analytics and needs to ensure that all data is encrypted at rest. The current cluster does not have encryption enabled. What is the most efficient way to enable encryption?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a snapshot of the cluster and restore it to a new cluster with encryption enabled
Redshift does not support enabling encryption on an existing cluster; a new encrypted cluster must be created and data migrated. Modifying the cluster configuration or parameter groups does not enable encryption. Creating a snapshot and restoring it to a new cluster with encryption enabled is the standard approach.
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.
✗
Change the cluster parameter group to enable encryption
Why it's wrong here
Parameter groups do not control encryption; encryption is a cluster-level setting.
✗
Modify the cluster configuration to enable encryption
Why it's wrong here
Redshift does not allow enabling encryption on an existing cluster.
✗
Use AWS DMS to migrate data to a new encrypted cluster
Why it's wrong here
DMS can be used, but it is less efficient than snapshot restore because it requires setting up DMS tasks.
✓
Create a snapshot of the cluster and restore it to a new cluster with encryption enabled
Why this is correct
This is the supported method to migrate to an encrypted cluster.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 DEA-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Data Security and Governance — This question tests Data Security and Governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a snapshot of the cluster and restore it to a new cluster with encryption enabled — Redshift does not support enabling encryption on an existing cluster; a new encrypted cluster must be created and data migrated. Modifying the cluster configuration or parameter groups does not enable encryption. Creating a snapshot and restoring it to a new cluster with encryption enabled is the standard approach.
What should I do if I get this DEA-C01 question wrong?
Identify which DEA-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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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
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