COMPUTER NETWORK2- LEC 6

Chapter 6  : Network Performance & Transmission Media

 

 

In previous sections, we have discussed the tools for transmitting data (signals) over a network and how the data behaves. In this section, we discuss quality of service, and an overall measurement of network performance. 
 

Cmputer Network - LEC4

Chapter 4: Data and Analog Signals

 

One of the major functions of the physical layer is to move data in the form of electromagnetic signals across a transmission medium. Generally, the data usable to a person or application is not in a form that can be transmitted over a network. For example, a photograph must first be changed to a form that transmission media can accept. Transmission media work by conducting energy along a physical path.