WI-FI
I-Content
1.Wi-fi is what?
2.Cach works
3.The standard wifi network
is secure wifi 4.Bao
5.Cai Installing and configuring Wi-Fi
II-What is WiFi?
1 .khai anniversary
wifi (wireless Fidelity), also known as 802.11 networking is wireless network uses radio waves, just like cell phones, television and radio.
2.Uu-cons of wi-fi networks.
a ) Pros
-The convenience and mobility: the wi-fi network, users can access the internet from anywhere there is wi-fi wave.
-effective: the user can maintain network connectivity when they move from one place to another within a wi-fi waves
-to deployment: the deployment of wi-fi network at least initially just one access point.
-Ability to expand: can respond immediately while increasing the number of users.
b) Cons:
-The secret: Environment air connection should ability hacked users is very high.
-Pham en: unlimited wi-fi wave is very limited manufacture, fit in one house, but with large buildings, it does not meet
-High reliability: because the use of radio waves to the media so it can be noisy, the signal is reduced by the impact of the device other (microwave ...)
-Speed: Speed wireless network (1-125 Mbps) much slower than using cable network (100Mbps to thousands Gbps)
III-way operation of wi-fi
1 .Mo practical use:
picture ....
-Multi wi-fi of the current use Omni Antennas, omnidirectional emits 3600, concentrated isotropic play corner a certain direction.
-Each has restricted access AP under 25 Client access
-Quality waves while having significantly reduced interference and obstructions
will proximity gauge mutual interference
-No access Slient user access
-No broadcast can edit user
can deploy comprehensive -No broad, difficult to manage
security -Gap security issues, limited access, few devices support.
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