The message authentication code is calculated by the sender and the receiver of a data transmission.

a) True

b) False

The answer is "Option b".

Explanation:

MAC stands for message authentication code, it provides a mechanism or service, that is used as a secret key to verify the integrity of a message. This mechanism is used in cryptography. Some times this method is also known as a tag, In this tags, a short piece of information is used to authenticate a message.