Description (TCO 3) What is PKIX? (TCO 3) Pretty good privacy (or PGP) is _____. (TCO 3) What is Certification Authority? (TCO 3) Which of the following is not a network topology? (TCO 3) A network protocol is _____. (TCO 3) A Class _____ address supports 65,000 hosts on each of 16,000 networks and allows two sections of the IP address to be devoted to host addressing. (TCO 3) Which of the following improves the security of a network by hiding internal addresses? (TCO 5) What does AAA stand for? (TCO 5) Which protocol enables the secure transfer of data from a remote PC to a server by creating a VPN across a TCP/IP network? (TCO 5) What does TACACS stand for?