Subnetting Practice Worksheet

For each of the following IP addresses and subnet masks find;

1. The network Class. 2. The network, subnet, and host portions of the address. 3. Subnet number. 4. Number of hosts in the subnet. 5. Number of subnets in the network. 6. Valid IP address range for the subnet. 7. Broadcast address for the subnet.

10.200.10.18, mask 255.192.0.0
172.31.100.100 , mask 255.255.224.0
192.168.15.150, mask 255.255.255.192
10.100.18.18, mask 255.240.0.0
172.31.200.10, mask 255.255.240.0
192.168.100.100 , mask 255.255.255.248
172.31.50.50 , mask 255.255.252.0
10.150.200.200 , mask 255.254.0.0
26.137.205.172, mask 255.248.0.0
168.31.140.14 , mask 255.255.240.0
10.1.1.1 , mask 255.248.0.0
172.16.1.200 , mask 255.255.240.0
172.16.0.200 , mask 255.255.255.192 1. , mask 255.0.0.0
172.31.50.50 , mask 255.255.254.0

Given this Class B network number, 172.31.0.0 , find the best subnet mask and list the subnet numbers if the network requires at least 35 subnets each with a minimum of 400 hosts.

Given this Class C network number, 192.168.8.0 , find the best subnet mask and list the subnet numbers if the network requires at least 12 subnets each with a minimum of 10 hosts.

Given this Class A network number, 10.0.0.0 , find the best subnet mask and list the subnet number sequence if the network requires at least 70 subnets each with a minimum of 1400 hosts.

Given this Class C network number, 205.38.15.0 , find the best subnet mask and list the subnet numbers if the network requires at least 6 subnets each with a minimum of 25 hosts.

Given this Class B network number, 154.39.0.0 , find the best subnet mask and list the subnet numbers if the network requires at least 28 subnets each with a minimum of 1000 hosts.

Given this Class A network number, 17.0.0.0 , find the