Computer Networking
What is the main reason the OSI model was created?

So Cisco could use the model.
So application developers can change only one layer's protocols at a time.
So different networks could communicate.
To create a layered model larger than the DoD model.

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Computer Networking
Bandlimited signal is

All of these
a signal all of whose energy is contained within a finite frequency range
simultaneous transmission of data to a number of stations
transmission of signals without modulation
None of these

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