Consider the enterprise network in Figure 3. Internet Management VLAN 99 172.25.10.0/24 Active Directory. DNS DHCP Radius Server Internet Auth Service (IAS) OUTSIDE DMZ: 192.168.101.254 LAN Trunk Port VLAN 100-103 172.25.10.50 Wireless Controller 172.25.10.51 172.25.10.52 Wireless AP Server Farm VLAN 100 10.2.120.0/24 Desktop Users VLAN 101 10.2.121.0/24 Mobile Users VLAN 103 10.2.123.0/24 Figure 3 Enterprise network diagram (source: https://www.speaknetworks.com) a) Appraise the use of DMZ (DeMilitarized Zone) for the enterprise network shown in Figure 3. (5 Marks) b) Apply Extensible Authentication Protocol (EAP) authentication Process in the above architecture, and describe the steps involved in the authentication. (5 Marks) c) Compare and contrast the use of Virtual LAN (VLAN) vs the use of multiple firewalls in enterprise networks. d) Report how Wi Fi Guest access will be implemented in this network. (5 Marks) (5 Marks)