a. What protection does confidentiality provide?

16a.) Using encryption, you make it impossible for attackers to read your messages even if they intercept them. This is _______.

a. Authentication

b. Confidentiality

c. Both A and B

d. Neither A nor B

b. What is a cipher?

16b.) A specific encryption method is called a _______.

a. Code

b. Schema

c. Key method

d. Cipher

c. In encryption for confidentiality, what must be kept secret?

16c.) In encryption, what must be kept secret?

a. The cipher

b. The key

c. Both A and B

d. Neither A nor B

d. What is the minimum size for encryption keys to be considered strong in most encryption ciphers?

16d.) In most encryption for confidentiality, keys must be at least _______ long to be considered safe.

a. 128 bits

b. 128 bytes

c. 1,280 bits

d. 1,280 bytes