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UNIT 4 (routers (stores computer address. it will find the best route for…
UNIT 4
routers
stores computer address. it will find the best route for the packages to travel quickly as possible along the network
network interface card
allows computer to connect to network. it is a hardware component. it is installed in a computer- in the motherboard or plugged into a USB port
hubs
cables from computers/devices are plugged into this device. it is the central point of a network- LAN. all computer connected can share the same package .
bridges
joins 2 different networks together with the same protocol, providing communication between them.
switches
inspects the address of the device and where it should be sent. only sent message to correct device not ALL. they are more expensive but less trafic free
modems
changes data form so it can be transferred to telephones and cable and decode it when it reaches another computer
WIFI
uses WLAN- wireless technology. allows mobile technology to LAN through wireless connection. with a broadband connection you can connect to to the internet without cables
Bluetooth
communication between close devices like a Bluetooth mouse. doesn't work good at great distance, faster and security
difference
wid range, fast speed better security, and more expensive
differences
provides pass and username. sensitive information, available to people inside the organisation, secure communiation
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can be accessed globally, huge amount of info entertainment. fast communication
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WAN - wide area network, internet global wide distance
LAN - local area internet - your house small distance network
WLAN - wireless local area network. using small range and radio