CyberCertPrepSecurity FundamentalsSecurity PrinciplesEASYFree question
Which of the following is an example of a control that protects confidentiality?
- A.Encrypting sensitive files before sending them via email
- B.A UPS (uninterruptible power supply) for the server room; mandatory access control lets the file owner set the classification label
- C.A backup system that runs nightly
- D.A load balancer distributing web traffic
Why A is correct
Encryption protects confidentiality by making data unreadable to unauthorized parties. Even if an encrypted email is intercepted, the attacker cannot read its contents without the decryption key. Backups and UPS devices support availability, while load balancers primarily help with availability and performance.
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