The answer is that creating an unencrypted snapshot, copying it with encryption, and then creating a new volume from that encrypted snapshot is a valid method to enforce encryption at rest for EBS volumes. This works because encryption at rest is a property of the volume itself, not the data on it; you cannot directly enable encryption on an already-existing, unencrypted volume. Instead, you must use the snapshot-and-copy workflow to generate an encrypted volume, which then ensures all data written to it is automatically encrypted. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this concept tests your understanding of EBS encryption lifecycle management, often appearing as a distractor where candidates mistakenly think you can simply attach a volume or toggle encryption on an existing volume. A common trap is assuming that enabling default encryption at the account level retroactively encrypts existing volumes—it only applies to new volumes. Memory tip: “Snap, copy, create—encrypt the data, not the slate.”
DOP-C02 Security and Compliance Practice Question
This DOP-C02 practice question tests your understanding of security and compliance. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Which THREE of the following are valid methods to enforce encryption at rest for Amazon EBS volumes? (Choose three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable EBS encryption by default in the account.
Enabling EBS encryption by default at the account level ensures all new volumes are encrypted. You can also encrypt volumes when creating them via the console or CLI. You cannot encrypt an existing volume directly; you must create a snapshot, copy it with encryption, and create a new volume. Attaching a volume does not encrypt it.
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.
✓
Enable EBS encryption by default in the account.
Why this is correct
This automatically encrypts all new EBS volumes.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use the AWS CLI to encrypt an existing volume in place.
Why it's wrong here
EBS does not support in-place encryption; you must create a new volume from an encrypted snapshot.
✓
Encrypt the volume when creating it through the AWS Management Console.
Why this is correct
You can choose to encrypt a volume at creation time.
Related concept
Read the scenario before looking for a memorised answer.
✗
Attach the volume to an EC2 instance and use OS-level encryption.
Why it's wrong here
OS-level encryption does not encrypt the EBS volume at rest from AWS perspective.
✓
Create an unencrypted snapshot of the volume, copy it with encryption, and create a new volume from the encrypted snapshot.
Why this is correct
This is the correct method to migrate an unencrypted volume to encrypted.
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 DOP-C02 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.
Security and Compliance — This question tests Security and Compliance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable EBS encryption by default in the account. — Enabling EBS encryption by default at the account level ensures all new volumes are encrypted. You can also encrypt volumes when creating them via the console or CLI. You cannot encrypt an existing volume directly; you must create a snapshot, copy it with encryption, and create a new volume. Attaching a volume does not encrypt it.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-C02 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.
About these practice questions
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This DOP-C02 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 DOP-C02 exam.
Question Discussion
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