If you sign a fax and sign it, they can hold it up in a court of law, if you email something with your signature, it cannot be. Faxes are also a huge security risk, the have a delay (who will be there to pick it up) but are faster to get a hard copy to someone.
tele/video conferencing (example: skype) main benefit is multiple people, a group. It allows you to show 'material'.
Local Area Network- is a network on one site.
When two lans come together you have WAN, 2 sites. To create a LAN you need network cables, switches, hubs, and bridges. To create a wireless WAN you need an access point so it can be linked onto the LAN. Equipment for a WAN- you need a router at either end. WLAN allow for wireless devices. WLAN is a wireless LAN.
Intranets are also only accessed by passwords, it is an internal website, for when you are only on-site. Intranet is just web technologies being used inside you business/school.
A Hub is a very confused box, it takes one thing in and broadcasts it multiple times/ways; 'Multi Broadcasting' and much slower.
Bridges are used to organise a LAN, they are intelligent, they are used to maximize the speed of sending a signal. If you have a private line, you 'don't' need a router at each end, it can send it straight from LAN to LAN.
A Switch, has overtaken the Hub, it holds a lost of everyone's IP address of anyone who connects to it, it manages the traffic going through it, it broadcast the signal down only one line, unlike the Hub.
A Proxy server makes your connection tot he outside world anonymous. It can log activity, and manage bandwidth.
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