About Technology

update technology ,more fast more smart...

Wi-Fi: Connect to the World

Written by oneself on 3:46 AM

by Blaine Reynolds

Wi-Fi, short for wireless fidelity refers to a set of wireless networking technologies more specifically referred to as any type of 802.11 network, 802.11b and 802.11a, dual band. The word Wi-Fi was built by an organization called the Wi-Fi Alliance. They overlook tests that confirm the production.

A product that undergoes the alliance analyses is given the name "Wi-Fi certified". In earlier times, the term "Wi-Fi" was used only in place of the 2.4 GHz 802.11b.standard. It rapidly gained in fame with access points across the Unites States.

These standards are generally in used around the world, and allow users that have Wifi capable device, like a laptop or PDA to connect anywhere there is available Wi-Fi access point.

There are three standards referred to signify the speed of connection. Both the 802.11a and 802.11b are the ones capable of 54 MBPS with 802.11a additional capabilities.

802.11b are the most common of the three standards because it can transmit at 11 Megabits per Second even though the faster WI-Fi standards are quickly changing it. However, all these Wi-Fi standards are fast enough to generally allow a broadband connection.

Wireless Fidelity is an appearing technology that will probably be as common as electric outlets and phone lines in a few years. It adds great levels of convenience and high level of production for workers whose offices have a Wi-Fi access.

It is intentionally planned to be use for wireless devices but is now often used for Internet access. You can connect computers anywhere, in or out your home or office without needing wires. They are just connected to the network that uses radio signals. Even travelers can progressively equip Wi-Fi in airports, coffee shops, Internet cafes, malls, and hotels around the world.

How does W-Fi work?

Wi-Fi is the wireless way to handle networking. Wi-Fi allocates a worldwide Internet connection to be transmitted through radio waves. Radio waves are the ones that make Wi-Fi run and exist. They permit Wi-Fi networking occurs between many people. These waves are transmitted from antennae and Wi-Fi receivers are picking them up. The moment a device receives signal within the range of a Wi-Fi network, an Internet connection is produced without a chord and with the use of a Wi-Fi card that reads the signal. The user will be incited with login screen and password if needed once the connection is established between the user and the network.

How secure is Wi-Fi?

Wi-Fi maintains and continues to have numerous security issues. Wired Equivalent Privacy (WEP) is used in the physical and data link layers. It was planned to provide wireless security by protecting the data while it travels from one point to the other. Contrasting with the wired LANs, their networks are usually inside the building.

Even if it is protected by wireless LANs, they are more exposed due to the fact that the data travels over radio waves which are much easier to capture. One of the reasons why WEP is vulnerable, some other corporations do not even change their shared keys for a long time. The keys are too long to be used. With that much time, the key can get into other hands and use it in a wrong motive, which could be disastrous for the corporation.
About the Author

Read about babysitting laws and babysitting games at the Babysitting Ideas website.

Read More......

Satellite Motherboard – Seeking Quality for your Motherboard Replacement

Written by oneself on 4:56 AM

By: Mark Grey

When you are looking to repair or replace your Satellite motherboard it can often be a difficult decision to make, however more than 75% of the time it is beneficial to replace the motherboard, this can bring a saving in time, and also a great financial saving. The repair of any motherboard, including a Satellite motherboard can be a complex, expensive and drawn out process, the replacement can be a lot swifter and stress free providing you are replacing it with a quality part from a quality source.

Seeking a quality supplier for your Satellite motherboard is not as challenging as you may think and there are several routes you can take. Firstly you could opt for heading straight to the Toshiba website and sourcing your replacement there – this will ensure quality, however, it will not bring you the money saving factor that you can achieve from shopping online.



You could opt for an auction site such as EBay, or even through a Craigslist advert, this will ensure the cost saving but unfortunately not the quality, so how can we combine quality and cost together? Simply by seeking out a dedicated and professional laptop spare supplier online, many sites like this exist, so now it is time to locate the best opportunity for receiving a top quality Satellite motherboard for a top quality price.

Let’s take the quality factor first, although it is great to have a cost saving this is pointless if it is going to be spent on repairs ion the near future, so to ensure you receive a great Satellite motherboard ensure that the site you are buying from offers a guarantee, such as a Never Fail guarantee, this will provide you the comfort of knowledge that when your part arrives it will be in good working order, and to ensure this even further make sure that the part is tested thoroughly prior to shipping and this has been verified by the site.

Moving on to the cost, remember if you are receiving the above factors for quality then you can even opt for a refurbished Satellite motherboard over a new motherboard, as we have established that regardless of what is ordered you will receive quality. Then to keep the costs lower still try and find a site that offers free shipping and various payment methods with no surcharges.

Combining this basic factors together and receiving the other benefits of buying your Satellite motherboard from a top quality online store can have you back mobile again for a good price in no time at all, be sure to look in to what LaptopAid.com can offer you when you are seeking a Satellite motherboard replacement.


Source: http://www.articlealley.com/article_1406791_10.html
About the Author
I Am a Freelance Writer For Businesses And Services Offering Article Marketing And Press Release, Writing And Submissions With High SEO Rankings. Visit My Article Blog at http://www.markfreelancearticles.blogspot.com
http://www.markfreearticles.com

Read More......