Well yes, those are the network layers, so network engineers think about them the most. Admittedly layers 5 and 6 are kind of blurry, but so what? Doesn’t mean

Well yes, those are the network layers, so network engineers think about them the most. Admittedly layers 5 and 6 are kind of blurry, but so what? Doesn’t mean the model isn’t useful, just that it isn’t a perfect map=territory.