Presentation on Wi-Fi

Seoul Metro.

Occupational Safety and Health Specialist

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Organization of Librarian Activities in Professional Education

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Features of the preparation for the General State Exam in Physics in the implementation of the FSES LLC

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Pedagogical activity on the design and implementation of the educational process in general educational organizations (subject "Physics")

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Slide 7 History
There are only two ways to get rid of wires – to transmit information

by infrared or by radio. The first way, alas, does not provide mobility – it 'works' only when the transmitter and receiver of information are directly visible. The radio channel remains, and in the mid-1990s the corresponding technology was developed and began to be used – mainly in the local networks of large corporations and companies in the Silicon Valley of the USA.

The maximum data transfer rate provided by this technology, which was initially 1 Mbit/s, eventually grew to 11 Mbit/s. In parallel with the speed increase, wireless equipment became cheaper. As a result the individuals could afford it, and by the end of the 1990s the territory of big cities of the USA and Europe began to be covered by zones inside which one could get to the Internet for free with a notebook with a wireless adapter. Such zones were given the slang name of a hot spot.
Of course, in order to use the services of a hot spot you had to know the 'name' of the respective wireless network, but it could also be determined by simply 'sniffing' the traffic. Enthusiasts of the new technology in North London even began to mark hot spots with crayons, developing their own system of labeling.

Back

Slide 8 Iron
Back

The wireless networking support in a laptop that doesn't come equipped with it by default. They have a built-in antenna, are compact and easy to set up.

Wireless Cardbus adapter 802.11g, up to 108 Mbps

Presentation Slides

Wireless networking is an important part of almost any modern enterprise. With a fast, secure network, you can dramatically increase your productivity.

Wi-Fi is a system, usually covering tens of meters, that uses unlicensed frequency bands to provide network access. Usually Wi-Fi is used by users to access their own local network, which may not be connected to the Internet.

A WiFi wireless access point is a radio transceiver that connects wireless and wired devices into a local area network.

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