Match the following description with its layered of security. 1: This layer involves securing individual devices, such as servers and workstations, using methods like antivirus, firewalls, and host-based intrusion detection systems. ____ 2: This layer is the first line of defense and involves securing the boundary between an organization's internal network and the external world using firewalls, intrusion prevention systems, and demilitarized zones (DMZs). ____ 3: This layer is responsible for securing communication between different network devices and may involve implementing technologies like routers, switches, and virtual private networks (VPNs). ____匹配题