Can some one tell a novice like me, what it means when one talks about programming at different layers.
I can comprehend, writing programs which are basically application layer stuff, and using the protocols, like tcp,udp below
But suppose, one talks about the implementation of mobile ip.
I know it is the network layer, but where does one do implemnetations that follow this protocol(is it in the routers)
and how is it done.
Please explain in layman or dummy terms.
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