• Describe each layer of the OSI model and how it relates to a network in 200 to 300 words. Your response must include answers to the following:
o On which layers of the OSI model do WAN protocols operate?
o What are some of these protocols?
o On which OSI layers do switches and routers operate?
o If routers reside at more than one layer, what is the difference between those OSI layers?
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