GIAC Foundational Cybersecurity Technologies 2025 – 400 Free Practice Questions to Pass the Exam

Encryption is fundamentally a transformation process that ensures the confidentiality of data. It involves converting plain text into a coded format, making it unreadable to unauthorized users. By employing encryption algorithms, sensitive information is protected from potential threats and data breaches, ensuring that only those with the appropriate decryption keys can access the original data.

In contrast, the other options do not accurately describe encryption. While data compression is aimed at reducing the size of data, it does not concern itself with making the data confidential. The third option suggests that encryption is used only in secure communications, which is misleading, as encryption can also be applied to data at rest, stored in databases, or in various applications beyond just communication. Lastly, the option indicating that encryption adds redundancy to data is incorrect; encryption actually aims to make the data more secure and typically does not add extra data that would lead to redundancy.