Revision 2

Chapter 4


1. State 3 differences between LAN & WAN.
LAN:
Privacy: Private
No. of computers: Limited no. of computers
Close / far: Close to each other 
WAN:
Privacy: public
No. of computers: Unlimited no. of computers
Close / far: Far away

2. What is WLAN? 
Wireless local area network connected using radio waves

3. Describe advantages & disadvantages of WLAN compared to LAN.
WLAN:
Tripping over cables: No
Hacking: Easier
Transfer speed: Lower
Add devices: Easier
Can connect mobiles: Yes
Allows portability during use: Yes 
LAN:
Tripping over cables: Yes
Hacking: More difficult
Transfer speed: Higher
Add devices: More difficult
Can connect mobiles: No
Allows portability during use: No 

 

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