Introduction to computer networks What is a computer network? What - PowerPoint PPT Presentation

Dec 17, 2022 •206 likes •280 views

Introduction to computer networks What is a computer network? What are the benefits of using networks? What does LAN stand for? Where are LANs usually located? What is the difference between a wired LAN and a wireless LAN?

Introduction to computer networks
 What is a computer network?  What are the benefits of using networks?  What does LAN stand for?  Where are LANs usually located?  What is the difference between a wired LAN and a wireless LAN?
souce: http://www.connectedhome.infopint.com/wp-content/uploads/2009/06/home_network.jpg
 What does PAN stand for?  What is a network protocol?  How do you log on to an Internet Service Provider?  WiMAX is a type of wireless network. What is it used for?  What equipment do you need to set up a wireless LAN?  What are the advantages and disadvantages of wireless networks?
Network devices  Modem : short for modulator/demodulator. An electronic device that converts signals to enable a computer to be connected to an ordinary telephone line.  Router : an electronic device that links different networks or parts of a network. It determines the path that a signal should take to reach its destination.  Hub : an electronic device at the centre of a star network topology. It puts the data packets that it receives on one of its port onto rest of its ports. Definitions adopted from Glendinning, E. H. & McEwan, J. 2002. Oxford English for Information Technology . Oxford University Press.
Network devices  Switch : an electronic device at the centre of a star network topology. It puts the data packets only onto the appropriate port.  Bridge : (a hardware and software combination) used to connect the same type of networks or to partition a large network into two smaller ones.  Gateway : an interface that enables dissimilar networks to communicate such as two LANs based on different topologies or network operating systems.  Repeater : an electronic device that amplifies signals. Definitions adopted from Glendinning, E. H. & McEwan, J. 2002. Oxford English for Information Technology . Oxford University Press.

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