Transcript PrinciplesIT_Lesson10_Presentation1_042211

AOIT
Principles of Information Technology
Unit 4, Lesson 10
Network Topologies
Copyright © 2007–2011 National Academy Foundation. All rights reserved.
There are many ways to set up a network
What are some types of networks
you've learned about so far?
Topology is the study of how things are arranged
Topology examines how things relate to each
other in space—how they are organized.
Network topology, then, is the study of how
computers are set up to work with one another.
Have you ever thought about how your classroom is
arranged? Why are desks and tables placed where they
are? Is there a reason behind their topology?
A star LAN has a hub and many spokes
A star LAN
A mesh LAN can be fully or partially connected
A partially connected
mesh LAN
A fully connected
mesh LAN
A tree LAN is also called a hierarchical network
A tree LAN
WANs are not so easily defined
Wide area networks (WANs), with their spread-out
nature, are not so easily defined, topologically.
In this diagram, the linked machines could be in the
same building, in different buildings, or even in different
countries.
Cables connect machines in a network
Network parts
are most often
connected using
cables.
Ethernet, shown
here, is the
most common
type of network
cable.
Partially stripped Ethernet
cable showing the twisted pairs
All networks help users share resources
No matter what type of network is designed,
all networks have a common goal: to help
users share resources.
What network topology would you use at home? At
school? In an office?