- A
Delete the stored files so the exposed key can no longer be used.
Why wrong: Deleting files is destructive and does not address the proper cryptographic response to possible key compromise.
- B
Rotate the key and re-encrypt or rewrap the protected data under the new key.
If a key may be compromised, the secure response is to replace it and move protected data to fresh key material. Rotating the key prevents the old key from being useful going forward, and re-encrypting or rewrapping ensures the data is actually protected by the new key. This reduces the risk that a future attacker can use the leaked key to access stored content.
- C
Change every user's password because that will also invalidate the exposed encryption key.
Why wrong: User password changes do not automatically secure data encrypted with a separate master key.
- D
Increase file compression so the data becomes harder to read.
Why wrong: Compression is not a security control and does not protect against key compromise or unauthorized decryption.
Quick Answer
The correct answer is to rotate the key and re-encrypt or rewrap the protected data under the new key. This is the best next step because key rotation immediately invalidates the exposed master encryption key by generating a new one and applying it to the data, ensuring that even if an attacker later obtains a copy of the old key, the data remains protected since it is no longer encrypted with that compromised credential. On the Security+ SY0-701 exam, this scenario tests your understanding of cryptographic key management and the principle of forward secrecy; a common trap is to assume simply deleting the old key suffices, but without re-encrypting the data, the existing ciphertext remains vulnerable to decryption if the old key is recovered. A helpful memory tip is “rotate and rewrap, don’t just delete”—think of changing the lock on a door and rekeying every lock that old key opened.
SY0-701 General Security Concepts Practice Question
This SY0-701 practice question tests your understanding of general security concepts. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 suspects the master encryption key used by a cloud storage service may have been exposed. The data must remain protected if someone later obtains a copy of the old key. What is the best next step?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
Rotate the key and re-encrypt or rewrap the protected data under the new key.
Key rotation is the correct response because it invalidates the old master encryption key by generating a new one and re-encrypting or rewrapping the protected data under the new key. This ensures that even if an attacker later obtains a copy of the old key, the data remains protected because it is no longer encrypted with that key. In cloud storage services like AWS KMS or Azure Key Vault, this process is typically automated and does not require re-uploading the 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.
- ✗
Delete the stored files so the exposed key can no longer be used.
Why it's wrong here
Deleting files is destructive and does not address the proper cryptographic response to possible key compromise.
- ✓
Rotate the key and re-encrypt or rewrap the protected data under the new key.
Why this is correct
If a key may be compromised, the secure response is to replace it and move protected data to fresh key material. Rotating the key prevents the old key from being useful going forward, and re-encrypting or rewrapping ensures the data is actually protected by the new key. This reduces the risk that a future attacker can use the leaked key to access stored content.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Change every user's password because that will also invalidate the exposed encryption key.
Why it's wrong here
User password changes do not automatically secure data encrypted with a separate master key.
- ✗
Increase file compression so the data becomes harder to read.
Why it's wrong here
Compression is not a security control and does not protect against key compromise or unauthorized decryption.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse key rotation with password changes or data deletion, failing to recognize that encryption key management requires cryptographic operations to re-protect the data, not just administrative actions like deleting files or changing user credentials.
Detailed technical explanation
How to think about this question
In envelope encryption, the master encryption key is used to wrap (encrypt) data encryption keys (DEKs), which in turn encrypt the actual data. Rotating the master key involves generating a new master key and rewrapping all DEKs under the new key, a process that can be done without re-encrypting the underlying data. This is a standard practice in key management systems (e.g., AWS KMS automatic key rotation) and is critical for compliance with frameworks like PCI DSS or NIST SP 800-57.
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 developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
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.
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FAQ
Questions learners often ask
What does this SY0-701 question test?
General Security Concepts — This question tests General Security Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Rotate the key and re-encrypt or rewrap the protected data under the new key. — Key rotation is the correct response because it invalidates the old master encryption key by generating a new one and re-encrypting or rewrapping the protected data under the new key. This ensures that even if an attacker later obtains a copy of the old key, the data remains protected because it is no longer encrypted with that key. In cloud storage services like AWS KMS or Azure Key Vault, this process is typically automated and does not require re-uploading the data.
What should I do if I get this SY0-701 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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Last reviewed: Jun 11, 2026
This SY0-701 practice question is part of Courseiva's free CompTIA 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 SY0-701 exam.
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