2. A network is a collection of computers connected by communication channels that allows you to share information. http://en.wikipedia.org/wiki/Co mputer_network

3. Is a computer software that can work offline. It does not require a network connection. http://en.wikipedia.org/wiki/Sta ndalone_software

4. Local Area Network. Is a computer network that connects computers in a limited area. http://en.wikipedia.org/wiki/Loc al_area_network

5. Wide Area Network. Is a telecommunication network that covers a broad area. http://en.wikipedia.org/wiki/Wid e_area_network

6. Advantages 1.Easy to share devices (printers & scanners) 2.Easy to share data (homework, pictures) 3.Cost is low for LAN setup Disadvantages 1.Required to be on at all times 2.Each computer can be easy to access for hackers\ 3.The area covered is limited. http://wiki.answers.com/Q/What_are_the_advantages_and_disadvantages_of_having_a_LAN

7. Cabled networks are faster and more secure. But it is a lot harder to set up than wireless LAN. 1.unshielded twisted pair 2.Shielded twisted pair 3.Coaxial cable 4.Fibre optic cable http://www.astahost.com/info/tcmfl-wired-lan-wireless.html http://wiki.answers.com/Q/Different_types_of_cable_used_in_LAN

8. Router Modem Computer Os system Ethernet/fiber optics cables http://en.kioskea.net/contents/configuration-reseau/creer-reseau-local.php3

9. The computers on a local area network must be connected via some way of networking medium. This medium serves as the channel where the network signal is transmitted. It must has an appropriate layout.

10. Star topology: are all connected together Ring topology: are all connected in a loop Bus topology: connects all networked devices to a single continuous cable. http://homepages.uel.ac.uk/u0212068/topologies.htm

11. Advantages It’s easy to set up and extended. Not very expensive. Disadvantages There’s a limit to the central cable length. The efficiency decreases as more devices connect. http://www.ianswer4u.com/2011/05/bus-topology-advantages- and.html#axzz1u58hLmiQ

12. Advantages Easy to connect new devices. Centralized management, easy to monitor all devices. Failure of one device doesn’t affect the rest. Disadvantages If centralized devices fails, the rest fail. The size is very limited. If the server is slow, the devices will be slow. http://www.buzzle.com/articles/star-topology-advantages-and-disadvantages.html http://www.ianswer4u.com/2011/05/star-topology-advantages- and.html#axzz1u58hLmiQ

13. A Wireless Local Area Network (WLAN) allows a mobile device to connect to a local area network through wireless (radio) connection. http://searchmobilecomputing.techtarget.com/definition/wireless-LAN

14. Wide Area Network is a telecommunication network that covers a broad are. EG: Internet. A WAN is a network, which spans a wide area and transmits data using common communication links such as telephone lines, microwave links, and satellite channels. The Internet is the most popular and largest Wide Area Network. http://en.wikipedia.org/wiki/Wide_area_network

15. Is the physical transfer of data, through a specific route that is set for it. EG: wireless communication channels, and the data is represented as an electromagnetic signal. http://en.wikipedia.org/wiki/Data_transmission

16. Is an application or system that accesses a service made available by a server. http://en.wikipedia.org/wiki/Clie nt_(computing)

17. A server is a computer program me running to serve the requests of other programs. http://en.wikipedia.org/wiki/Ser ver_(computing)

18. Is a relationship between two programs. The client makes a service request. The server fulfills this request. http://searchnetworking.techtarg et.com/definition/client-server

19. Is a computer network where each computer in the network can act as a server or client, for other computers in the network, allowing information to be shared http://en.wikipedia.org/wiki/Peer-to- peer

20. The amount of bits allowed to pass through the network. One that does not exceed any peripherals

21. A unit of data transmission speed for a modem of one bit per second.

22. Refers to one way communication in which one side it’s the transmitter and the other is the receiver. Refers to a two way communication where only one side can transmit data Is a two way communication, both sides can transmit and receive data at the same time