How to I solve this problem?

(a) Ethernet LAN A has 80 host nodes and Ethernet LAN C has 140 host nodes.

Give a specific scheme for using subnets at the site.

(Assign explicit subnet numbers and masks, addresses for router interfaces, and give the R2

router table; assume that R2 interface 0 can have only one IP address).

(b) The network has been set up and is running with host nodes and routers configured with the

proper information [from part (a)]. Then R2 is replaced by a two-port switch. You are in charge

of the network and want to expend minimum effort in ensuring that users continue to see correct

network operation; what should you do?

(c) Consider the original company network again, with router R2 in place. This time LAN A is to

have 27 nodes, and you want to maximize the number of host nodes that can be used on LAN C.

Explain how you would achieve this, and give the number of nodes that you will be able to use

on LAN C.

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