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I'm reading about subnetting but have problems with these topologies. The book says that network1 has 4 subnets and network2 has 12 subnets. But I count only 11 subnets in netork2 ? If there is a switch between 2 routers, you have to count it only once i thought?

Thanks in advance for helping me

Network 1: Network 2:

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closed as not a real question by Michael Hampton, MDMarra, gravyface, petrus, Tim Brigham Sep 4 '12 at 20:10

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

There are 12 subnets total. Perhaps you just mis-counted?

You are correct, the switch is (presumably) a L2 device, and doesn't do routing. It's all one subnet.

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