Page 3 - Handout Computer Network.

2.7.2 The OSI Reference Model ................................................................................................... 25

2.8 Introduction to TCP/IP .............................................................................................................. 28

2.8.1 Encapsulation De-Encapsulation Process .......................................................................... 35

2.8.2 Encapsulation ..................................................................................................................... 35

2.9.1 End-user devices that provide users with a connection to the network are also called hosts.

..................................................................................................................................................... 38

2.9.2 Network devices ................................................................................................................. 38

2.10 Network Topologies............................................................................................................. 43

2.10.1 Physical Topology ............................................................................................................ 43

2.10.1.2 Star and Extended-Star Topologies ............................................................................... 44

2.10.1.3 Ring Topology .............................................................................................................. 45

2.10.1.4 Hierarchical Topology .................................................................................................. 47

2.10.2 Logical Topology ............................................................................................................. 47

2.9 Broadband Integrated Services Digital Network (BISDN) ....................................................... 48

2 9.1 Main Characteristics of BISDN ......................................................................................... 48

2.9.2 High Data Rates ................................................................................................................. 48

2.9.3 Integration of Services ....................................................................................................... 48

2.10 Asynchronous Transfer Mode (ATM) .................................................................................... 49

2.11 Quality of Service (QoS) ......................................................................................................... 50

2.12 QoS Performance Parameters ................................................................................................. 51

2.12 1Bandwidth ......................................................................................................................... 51

2.12.2 Traffic Prioritization ........................................................................................................ 52

2.12.3 Traffic Shaping ................................................................................................................ 52

2.12.4 Traffic Policing ................................................................................................................ 52

2.12.5 Queue Management ......................................................................................................... 53