CompTIA CySA+ Practice Test

Data encryption is considered essential for sensitive information primarily because it makes data unreadable to unauthorized users. By converting plaintext into a coded format, encryption ensures that even if the data is intercepted or accessed by someone without the proper decryption key or authorization, it remains incomprehensible and secure. This is crucial for protecting personal, financial, and proprietary information in a world where data breaches and cyberattacks are increasingly common.

The other options do not accurately capture the core purpose of encryption. While increased speed of data transmission and easier data backup might be beneficial in other contexts, they do not relate directly to the primary function of encryption. Furthermore, improving the aesthetics of data display is unrelated to data security and encryption—it does not offer any protection or confidentiality for sensitive information.