Computer Networking!

By Julia Nguyen B2

What is it?

Networking is two or more computers linked together

Two common types are Local Area Network (LAN) and Wide Area Network (WAN)

Local Area Network!LAN is small network area like an office or buildingInformation is stored in a file serverPrint servers let many people use the same

printer

Wide Area Network!WAN has a wide geographical areaFour types of Wide Area Networks are:

Metropolitan Area Network(MAN), Public Access Network (PAN), Value Added Network (VAN), an Virtual Private Network (VPN)

More Types of Networks!Though LAN and WAN are common types of

networks, there are others!Two types are Intranet and Extranet

Intranet Intranet is a private LAN that’s made to be used

by everyone in an organization It may have an internal e-mail system, message

from board Restricted by a firewall to have access to

intranet’s web

ExtranetExtranet connects people within company that is

outside of the company Is a secure password protected network that

anyone can access

Metropolitan Area NetworkMAN is two or more computers which are

geographically separated but in same metropolitan city

For example: University, hospital, business

Network Topology!Networks can be grouped into topology like: Bus

topology, Star topology, and Ring topologyThe topology shows the relation of the device and

network

Differences Between Topologies!

If a networked computer is connected to a hub, it has Star topology, instead of Bus topology

It depends on the physical layout

Good things about Network!Can share informationShare hardwareShare Software Collaborative environment

Bad Things about Network!

Computer hackersVirus attacks

Computer Science Careers

There are so many careers in computer science! One specific career is a web developer!

Web Developer!The job of a Web Designer/ Developer has the

responsibility of the Website’s looks and how it works

They program codes, test and upload the site!They must also have a creative imagination

Web Developer!Web Designers have training on the jobWeb Designers will have a salary of over £18,000

to £40,000 or more!

References! Mr. Webster’s PowerPoint on networking

http://www.contrib.andrew.cmu.edu/~

sfaiadh/computer_networks.htm Computer networks, author

unknown

http://

creativepool.com/articles/jobdescriptions/web-designer-and-web-de

veloper-job-description

Web Design/Developer, Author: Creative Pool

The End!