What aspect of information security is closely associated with the practice of encryption?

What aspect of information security is closely associated with the practice of encryption?

• A. Data transmission speed
• B. Physical security of data centers
• C. Data confidentiality
• D. Enhanced data visibility

Answer: (C)

Encryption exists to keep information secret by turning readable data into unreadable ciphertext unless you have the key. This directly protects data confidentiality—the assurance that sensitive data cannot be understood by anyone without authorization. Even if data is intercepted in transit or stored somewhere, encryption ensures that outsiders can’t read it, which is the core reason encryption is used. It doesn’t primarily aim to speed up transmission, nor does it serve as a replacement for physical security of facilities. And while encryption can affect how easily someone can read data, its primary value is preventing disclosure to unauthorized readers. So the aspect most closely tied to encryption is data confidentiality.