ITPEC IP April 2019 Question 45
ITPEC IP April 2019 — Question 45 of 100
Encrypting the customer data helps prevent information leakage because unauthorized readers cannot understand the ciphertext without the decryption key. The key must be protected separately and access controls should also limit who can obtain the data.
Answer (d)
Why not others:
- a digital signature supports authenticity and integrity, not secrecy
- backups improve recoverability but create additional copies that also need protection
- RAID improves availability after disk failure but does not conceal stored content
Key rule: Encryption protects confidentiality; signatures protect authenticity and integrity, while backup and RAID mainly protect availability.
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