Sunday, October 31, 2010

Week 8 Questions

1.
http://www.youtube.com/watch?v=UjGfUZU_99g

Wireless enables more freedom on where organisations can operate.

2.
Allows the internet to carry voice in digital format, call costs have dramatically decreased as the international calls are now internet connections. This means that business's have a more cost effective way of making calls and also enables them to operate from different locations around the world at a cheaper price. For examples to call centers in India.

3.
Local area networks (LANs) connect computers that reside in a single geographic location on the premises of the company that operates the LAN. How ever WAN operate over a wider area. For example any company that have offices in different cities will use a WAN to connect data from the various offices.

4.
Passive RFID – no internal power, can pick up the very faint signal from an antenna, power up just enough to transmit data back to antenna. Can also store small amount of EPROM data. Active RFID – have power and transmit much stronger and accurate data.

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