Page 24 - Handout Computer Network.
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The following are some of the factors that determine throughput:


                          •  Internetworking devices
                          •  Type of data being transferred

                          •  Network topology
                          •  Number of users on the network

                          •  User’s computer
                          •  Server computer

                          •  Power conditions
                          •  Congestion


                      A network’s theoretical bandwidth is an important consideration in network design, because
               network bandwidth is never greater than the limits imposed by the chosen medium and networking
               technologies.


                      https://www.youtube.com/watch?v=DHa9gxRfAmM&t=25s

               2.6.1 Data Transfer Calculation

                      Network  designers  and  administrators  are  often  called  on  to  make  decisions  regarding
               bandwidth. Should the size of the WAN connection be increased to accommodate a new database?
               Is the current LAN backbone of sufficient bandwidth for a streaming video training program? The
               answers to questions like these are not always easy to find, but one place to start is with a simple data
               transfer calculation.

                      Using  the  formula  T  =  S  /  BW  (transfer  time  =  size  of  file  /  bandwidth)  lets  a  network
               administrator estimate several of the important components of network performance. If the typical
               file size for a given application is known, dividing the file size by the network bandwidth yields an
               estimate of the fastest time that the file can be transferred.

                      https://www.youtube.com/watch?v=bmDhGVicgiQ

                       2.7Networking Models


                      Learning about networking is easier when you start with theory and concepts and then move
               on to the more concrete aspects of implementation. As a network professional, you need to learn the
               theory of how networks communicate before you design, build, and maintain networks. Learning the
               concept of layers can help you understand the action that occurs during communication from one
               computer to another. This section covers the concepts of layering and how it applies specifically to
               communication models. Two specific models, OSI and TCP/IP, are described, as well as peer-to-peer
               layer communication and encapsulation.

                      https://www.youtube.com/watch?v=61kRxdZ5p-o



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