I. For each of the following networks, determine (a) the network address (b) the broadcast address (c) the number of useable addresses on the segment. (1) managment vlan: 172.20.1.0/27 (2) internal machines: 172.20.1.32/27 (3) external-facing machines: 172.20.1.64/27 (4) internal wireless clients: 172.20.1.128/26 (5) VPN connections: 172.20.1.192/26 II. Why would I choose to segment the network this way? That is, what overall route(s) does the router have to advertise to make all of these subnets accessible?