Open, New, Close, and Save can usually be found in the _______ menu.

Which statement about cryptography is TRUE?

A. Transposition is the process of changing a key value during each round of encryption. B. Diffusion is the process of changing the location of the plaintext within the ciphertext. C. Substitution is the process of shuffling or reordering the plaintext to hide the original message. D. Confusion is the process of exchanging one byte in a message for another.

________ systems are computer programs that mimic the experience of human experts such as doctorsor lawyers.

Fill in the blank(s) with the appropriate word(s).