Which statement best describes a Network Model? (Choose the best statement)

a. A network model can be best described as a message sent by a sender to a receiver through a medium and following a set of governing protocols.

d. A network model can be best described as a direct link between two peripherals connected to the same computer system, and that sends data in binary format

c. A network model can be best described as a multi-processor core on a single computer system

b. A network model can be best described as a computer CPU processing data based on input from a peripheral device