CompTIA CySA+ Practice Questions: Data Security

14 free, exam-style CompTIA CySA+ (CS0-003) practice questions covering Data Security. Each question shows the correct answer and a clear explanation. Ready for the real thing? Take the full timed quiz below.

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Q1. What is the primary purpose of hashing sensitive data? (Q-627fea)

Explanation: Hashing creates a fixed-size fingerprint of data to verify its integrity. Learn more.

Q2. What is the PRIMARY purpose of data encryption? (Q-627ff8)

Explanation: Encryption protects data confidentiality by making it unreadable without a key. Learn more.

Q3. What is the purpose of a checksum? (Q-628001)

Explanation: Checksums detect accidental changes to data (e.g., corruption). Learn more.

Q4. What is the MAIN security benefit of confidential computing? (Q-628048)

Explanation: Confidential computing protects data during processing via hardware enclaves. Learn more.

Q5. What is the PRIMARY purpose of a secure enclave? (Q-628050)

Explanation: Secure enclaves (e.g., Intel SGX) protect data during processing via hardware isolation. Learn more.

Q6. What is the PRIMARY purpose of a secure enclave? (Q-628062)

Explanation: Secure enclaves (e.g., Intel SGX) protect data during processing. Learn more.

Q7. What is the MAIN security benefit of confidential computing? (Q-628066)

Explanation: Confidential computing protects data during processing via hardware enclaves. Learn more.

Q8. What is the PRIMARY purpose of a secure enclave? (Q-628068)

Explanation: Secure enclaves (e.g., Intel SGX) protect data during processing. Learn more.

Q9. What is the MAIN security benefit of confidential computing? (Q-628076)

Explanation: Confidential computing protects data during processing via hardware enclaves. Learn more.

Q10. What is the PRIMARY purpose of a secure enclave? (Q-628078)

Explanation: Secure enclaves (e.g., Intel SGX) protect data during processing. Learn more.

Q11. What is the MAIN security benefit of confidential computing? (Q-628086)

Explanation: Confidential computing protects data during processing via hardware enclaves. Learn more.

Q12. What is the purpose of data sanitization in the context of media disposal?

Explanation: Data sanitization ensures that data is irretrievably destroyed, preventing unauthorized access after media disposal. Learn more.

Q13. A DLP alert shows customer records uploaded to personal cloud storage. Which risk is indicated?

Explanation: Uploading sensitive records to unauthorized cloud storage can indicate data loss or exfiltration. Learn more.

Q14. Which data handling step masks sensitive values before sharing logs with a broader audience?

Explanation: Redaction removes or obscures sensitive data while preserving useful investigative context. Learn more.

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