____ builds on the encoding format of the MIME protocol and uses digital signatures based on public-key cryptosystems to secure e-mail.

Which of the following is true of an intranet? (Select all that apply.)

a. It uses class E addressing. b. It is used in high-speed (Gigabit) Ethernet. c. It is an internal network that provides file and resource sharing. d. It enables Fast Ethernet connections. e. It is not accessed from the Internet.

What are the main properties of Diffie-Hellman?

What will be an ideal response?