Hello I am new to your site, I like it so far. I actually want to see if I have answered two questions on my final exam at school correctly.
1) A router connects two networks: 184.108.40.206 and 220.127.116.11. The router is assigned the first IP address for each network and uses the standard class mask. A host has the IP address of 18.104.22.168. What default gateway will be assigned to this host?
Is the answer to # 1 - 22.214.171.124 ?
2) What is the network number for IP address 126.96.36.199 if the standard mask is used?
1. The default gateway cannot be a network address, or a broadcast address. If you have assigned the 188.8.131.52 and 184.108.40.206 to the appropriate interfaces, then the the node 220.127.116.11 sits on the 18.104.22.168 network. The first host address on the network has been assigned to the router interface, and it is that address (22.214.171.124) on the router interface that is the default gateway.
Likewise, any node on the 126.96.36.199 network is going to have 188.8.131.52 as it's default gateway.
2. Assuming a standard 16 bit class B mask, the network address for 184.108.40.206 would be 220.127.116.11.