Which term is defined as 'coding data to hide it'?

Which term is defined as 'coding data to hide it'?

• A. Encryption
• B. Symmetric encryption
• C. Automatic repeat query
• D. Asymmetric encryption

Answer: (C)

Encryption is the process of coding data to hide it. By applying an algorithm and a key, readable data becomes ciphertext, which can only be turned back into the original form by someone who has the correct key. This protects confidentiality so unauthorized people can’t understand the information. There are two common approaches: symmetric encryption uses the same key to both encrypt and decrypt, while asymmetric encryption uses a pair of keys, one for encryption (public) and one for decryption (private). The other term listed, automatic repeat query, deals with checking and correcting errors in data transmission, not with hiding information, so it doesn’t fit. When describing the idea of turning data into a hidden form, encryption is the best fit.

Encryption is the process of coding data to hide it. By applying an algorithm and a key, readable data becomes ciphertext, which can only be turned back into the original form by someone who has the correct key. This protects confidentiality so unauthorized people can’t understand the information. There are two common approaches: symmetric encryption uses the same key to both encrypt and decrypt, while asymmetric encryption uses a pair of keys, one for encryption (public) and one for decryption (private). The other term listed, automatic repeat query, deals with checking and correcting errors in data transmission, not with hiding information, so it doesn’t fit. When describing the idea of turning data into a hidden form, encryption is the best fit.