1. Unit 3, Lesson 6 Types of Network Topologies AOIT Computer Networking Copyright © 2008–2013 National Academy Foundation. All rights reserved.

2. A network topology describes how computers are arranged on a network When you look at how computers, or nodes, are arranged and connected to each other on a network, what picture do you see? Star Ring Bus Mesh Some combination The topology, or how the computers are arranged physically, affects the efficiency of the network.

3. Star topology connects using a hub or a switch

4. A token ring network uses an MAU hub

5. Bus topology has a central cable

6. Full mesh topology provides complete linking Full mesh topology links every computer or device to every other one.

7. Partial mesh topology provides many routes In a partial mesh topology, all computers can connect to all others by going through no more than a few nodes.

8. Often networks combine topologies AccountingSales

9. Networks can be classified by distance Local Area Network (LAN) In one building Home or business Metropolitan Area Network (MAN) Multiple locations One city or region Business, school, or local government Wide Area Network (WAN) Covers a large area International business The Internet

10. On peer-to-peer networks, all computers are equal

11. In client/server networks, shared resources are accessed from a server Networks often have servers that perform a specific function: File server Web server Email server A client/server network in a small office might look like this.

12. Modern data storage facilities have server farms Internet businesses like Google use huge server farms to store data. A server farm houses thousands of servers in specially cooled racks. Failed server modules are quickly pulled and replaced in the rack. A rack of server modules that are part of a Google server farm. Each server contains a backup battery.

13. Building a network requires planning each aspect of how the computers connect and communicate Network topologies describe how computers are connected to each other. Networks are classified into LAN, MAN, and WAN by the distance they cover. On a peer-to-peer network, all computers on the network are equal. In a client/server network, a server controls the access other computers (the clients) have to resources.