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