In computer security, the process of transforming data into an unintelligible form in such a way that the original data cannot be easily obtained except by using a decryption process.

In computer security, the process of transforming data into an unintelligible form in such a way that the original data cannot be easily obtained except by using a decryption process.

• A. graphics tablet
• B. file manager
• C. encryption
• D. data bus

Answer: (C)

Encryption is the process of turning readable data into an unintelligible form so that the original information can only be recovered with a decryption process using a key. This directly provides confidentiality, letting you protect data in transit or at rest from anyone who doesn’t have the right key. In practice, encryption uses algorithms (like AES or RSA) and keys; the same key can be used to decrypt in symmetric encryption, or a public/private key pair can be used in asymmetric encryption. Other options don’t fit because they describe things like a device for drawing, a program for managing files, or a hardware pathway for data. Those don’t transform data to protect its content. Also, encoding or hashing isn’t the same as encryption: encoding is about representing data in a different format, and hashing is a one-way process that doesn’t allow you to recover the original data.

Encryption is the process of turning readable data into an unintelligible form so that the original information can only be recovered with a decryption process using a key. This directly provides confidentiality, letting you protect data in transit or at rest from anyone who doesn’t have the right key. In practice, encryption uses algorithms (like AES or RSA) and keys; the same key can be used to decrypt in symmetric encryption, or a public/private key pair can be used in asymmetric encryption.

Other options don’t fit because they describe things like a device for drawing, a program for managing files, or a hardware pathway for data. Those don’t transform data to protect its content. Also, encoding or hashing isn’t the same as encryption: encoding is about representing data in a different format, and hashing is a one-way process that doesn’t allow you to recover the original data.