An IDS that protects a single host against attack is called a(n) pattern based IDS host based IDS heueristic IDS application specific IDS None of the above Question 19 A device that permits or blocks data flow between two parts of a network architecture is a(n) firewall intrusion detection system cipher suite VPN None of the above Question 20 When an SSL session is being set up between a client and server, each negotiates with the other The particular encryption algorithms they will use The time to live parameters of the session The mimimum size of packets that each will allow The TCP congestion window initial values None of the above