1. Communication Networks NETW 501 Tutorial 2
Prepared by: Eng. Minar El-Aasser

2. Need of Standard OSI (Open System Interconnect) Model
7 layer abstract reference model for network architecture
Set of protocols that would allow any two different components to communicate regardless of their underlying architecture

3. OSI (Open System Interconnect) Model

4. Why Layering?

5. Peer-to-Peer Communication

6. Communication Network Example
Server
Routers PC

7. Computer/Data Network Components
Layer 3
Layer 2
Layer 1
Layer 7
Layer 7

8. Introduction to Packet Tracer
Packet Tracer is a network simulator that allows you create a simulated network, configure the devices in the network, test the network, and examine the traffic in the network.
A network simulator is a software that predicts the behavior of a computer network.
Packet tracer is a CISCO proprietary tool.
The first step in creating a simulated network in Packet Tracer is to place the devices in the logical workplace and connect them together. 

9. Introduction to Packet Tracer ‘cont’d’
Activity 2 – Objectives:
Correctly indentify cables for use in the network
Physically cable a peer-to-peer and switched network
Verify basic connectivity on each network
N.B: You Can Find “Packet Tracer” Source on the intranet in the Information & Engineering Technology Folder
Cisco Packet Tracer

10. Questions?