List three characteristics that an Intrusion Prevention System (IPS) could use in identifying an intruder to a network. Do you feel these systems are effective? Solution Intrusion Prevention System is a control device of security technology where it has the capacity which it offers the security to all the system levels. That is, it provides the security from the operating system to network data packets. When the data is transferred by the user, the IPS offers some rules for the network traffic for alerting the user system or the network administrators by giving alert that there will be a suspicious in the traffic. Then the administrator can take the action on the suspicious and user can be attentive. If there are any potential attacks then IPS makes attempts to stop it. IPS has the capacity that it prevents the known intrusion signatures, and also some unknown attacks. Yes, it is an effective system to avoid the attacks and protects the system in all levels by providing the security..