What Is Wi-Fi

Wireless technology has become a prominent field in the area of networking. It has many uses. The most important being portability and mobility. With the help of wireless technology people now can send and receive messages, phone calls, faxes, read files, login on remote machines etc. and perform all the above mentioned duties from anywhere on land, sea, or air.

The technology of wifi has stormed the field of wireless networking. There are numerous applications of wifi. Nowadays it is very useful and critical in business world because today's business gives more emphasis on the communication of the information. wifi also finds usage at home, workplaces, shops, any public places etc. the study of the advantages and the risks involved in the wifi system is necessary in order to exploit the full use of it.

About wireless networks.

The transfer of information from node to another with the help of electromagnetic waves is referred to as wireless communication. Signals are normally broadcast through free space and are available to anyone who has device capable of receiving them. A new technique of wireless data transmission known as wifi (wireless fidelity) has been developed. wifi uses the radio waves to transmit the data. It uses the frequency of 2.4GHz and uses SSID for addressing purposes. SSID stands for Service Set Identifier. It uses a set of characters or numbers addresses so that the sending access point can be identified. Any access point which wants to receive the signal must have the same set of SSID as that of sender's SSID.

advantages.

The usage of wifi system has numerous advantages. The most important advantage is the cost factor. Since there are free hotspots or access points, a free connection between two nodes cab be established in the network. A wireless network also provides the facilities of mobility. Hence it is now possible to have a wireless connection, free of hard wired connections.It is also easy to install and configure wifi network. It is also easy and generally faster, internet connections are possible by wifi networks.

Dangers and risks.

Since wifi is a wireless connection it uses the shared wireless space. Hence it is possible that many signals of similar frequencies can interfere with each other and cause unnecessary distortions. This leads to the loss of data and the received data may get corrupted. Hence wifi does not ensure an error free connection. Another danger involved is related to security of data. It is possible that users who are new to the wifi network may setup an insecure access point, without setting the various security configurations. It is also possible that some miscreants may use the same default SSID everywhere to access the secured access points illegally. The best way to counter these dangers is to learn and study the configuration of the secured network and make it a rule to always use a different SSID for access point and never keep the default value.

You can also find more info on Wi-Fi Phone and Wi-Fi Security. Topwifireviews.com is a comprehensive resource to know about Wi-Fi Wireless network technology.

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Satellite Radio Caters To A Lot Of Niche Markets

satellite radio might be a fairly new creation, but its one thats being readily embraced by lots of listeners. The biggest reason for this is the fact that most satellite radio providers have managed to dream up some great ways to target niche markets, making their overall packages look and sound incredible.

The simple truth is that many well rounded satellite radio services are becoming one of the best ways to receive news, information and music all the time, almost anywhere. These services provide a variety of niche programs that just cant be matched on a regular local radio station.

While not all satellite radio providers offer the same types of programming, there are some commonalities between most when it comes to niches targeted. These include:

*Rock fans. satellite radio just cant be beaten for the number of rock and rock-related stations. From Top 40 and contemporary to oldies and alternatives, the rock stations on most satellite services are so many, its hard for fans not to find a song on they want to listen to.

*Country fans. Whoever said country wasnt cool hasnt listened to satellite radio. Most services provide niche stations that offer popular country, oldies and even some folk and bluegrass thrown in. Some services will have at least a channel (or several) dedicated to each type of music, too.

*News. With many satellite radio companies getting their news directly from some major outlets, whats on the stations is generally fresh and breaking. This means those with satellite radio dont have to miss out on big events during a drive or even while theyre working on the computer.

*Specialty channels. Some satellite radio providers even offer channels dedicated to specific bands. This is serious niche marketing, but some services find fans really enjoy the perk.

*Traffic. This is one of the neatest features offered by many satellite radio providers. Giving up to the minute traffic and weather reports on specific channels for each major metro area, its easy to keep up with whats going on at home.

*Talk. With more channels than ever to dedicate to talk programs, satellite radio providers are starting to pull some very big names in the industry. From famous radio talk show hosts to even some major names in television, satellite radio is the place to turn for talk.

Targeting hundreds of niche markets at one, satellite radio providers are able to offer more than local stations hands down. Its almost impossible to tune in and not find something worth listening to.

For more information on the ever expanding technology of satellite radio try visiting http://www.thesatelliteradiosite.com, a website that specializes in providing advice, tips and resources on what's the hottest satellite radio receiver that you can switch on to enjoy crystal clear, digital reception.

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