What Is Wifi? A Guide To Wi. Fi For Beginners.
- Doctors groups around the world have spoken up to call for Precaution against wireless radiation and for reduction of exposure, especially on Children.
- If you have ever wondered what the difference is between WiFi 802.11a/b/g/n or ac, and the new ad, ah, af, then check out our guide to wireless networking.
- Amazon.com - Ambient Weather WS-1001-WIFI OBSERVER Solar Powered Wireless WiFi Remote Monitoring Weather Station -.
- Sub-1GHz Wireless: The Low-Power WiFi Solution The new 802.11ah standard paves the way for WiFi networks to support the avalanche of sensors and devices that will.
- Wondering What WiFi Actually Is In Layman's Terms? 'WiFi' is the nickname for Wireless Fidelity - high speed internet and network connection without the use of wires.
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Addressing The Matter Of Security. In this age of identity theft and credit card fraud it's easy to understand the concerns of security when it comes to transmitting sensitive data across the airwaves. Fear plagues the wired network enough, so it's natural that a wireless network should have increased suspicion surrounding it. Thankfully there are plenty of things you can do to increase the security of your wireless connection, to the point that it is as safe as the safest wired one. The following list of precautions will only cost you a bit a time to set up: * Turning off the file- sharing feature on your computer* Updating your operating system on a regular basis* Password protecting your computer and any protected files* Only transmitting emails containing sensitive information through a secure, web- based email site (those that start with https: // in the address bar)For a nominal cost there is various software you can install to beef up security. These include: * Personal firewall alongside good anti- virus software* Encryption software used to encode data sent across a wireless connection (Most sites that require you to enter credit card information are secure anyway, but it's better to be safe than sorry).* Use of a Virtual Private Network (VPN). Probably the best way to protect your information when using public Wi.
Fi areas such as airports, libraries, etc. A VPN creates an impenetrable shield linking your computer to the site you are accessing. Think of it as trying to access a train that is parked in a tunnel, the only ways in are at either end of the tunnel itself. Security is a major issue these days and rightly so. At home your wireless router produces a range that extends beyond the size of most homes - allowing people with the knowledge and know- how to use (in effect steal) your connection just by sitting out the front of your house in the street.
Also, hackers target public access areas such as airports, as they know that public access areas do not carry their own security - it's up to the individual to take the precautions themselves. This lack of security however, should not be a deterrent from switching over to a wireless connection, as by following the recommendations above you will be more than secure on your network and internet connections. In fact, if you do follow all the points above it's safe to say your wireless connection would be more secure than most people's wired ones.
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What Is Wi. Fi? - How Wi. Fi Works. A wireless network uses radio waves, just like cell phones, televisions and radios do. In fact, communication across a wireless network is a lot like two- way radio communication. Here's what happens: A computer's wireless adapter translates data into a radio signal and transmits it using an antenna.
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A wireless router receives the signal and decodes it. The router sends the information to the Internet using a physical, wired Ethernet connection. The process also works in reverse, with the router receiving information from the Internet, translating it into a radio signal and sending it to the computer's wireless adapter. The radios used for Wi.
Fi communication are very similar to the radios used for walkie- talkies, cell phones and other devices. They can transmit and receive radio waves, and they can convert 1s and 0s into radio waves and convert the radio waves back into 1s and 0s. But Wi. Fi radios have a few notable differences from other radios: They transmit at frequencies of 2. GHz or 5 GHz. This frequency is considerably higher than the frequencies used for cell phones, walkie- talkies and televisions. The higher frequency allows the signal to carry more data. They use 8. 02. 1.
GHz and can move up to 5. It also uses orthogonal frequency- division multiplexing (OFDM), a more efficient coding technique that splits that radio signal into several sub- signals before they reach a receiver. This greatly reduces interference. For a while, its cost made it popular, but now it's becoming less common as faster standards become less expensive. GHz frequency band of the radio spectrum. It can handle up to 1. CCK) modulation to improve speeds.
GHz like 8. 02. 1. OFDM coding as 8. It significantly improved speed and range over its predecessors. For instance, although 8. It has yet to be widely adopted, and is still in draft form at the Institute of Electrical and Electronics Engineers (IEEE), but devices that support it are already on the market. GHz band and ac on the 5 GHz band.
It is less prone to interference and far faster than its predecessors, pushing a maximum of 4. Like 8. 02. 1. 1n, it allows for transmission on multiple spatial streams - - up to eight, optionally.
It is sometimes called 5. G Wi. Fi because of its frequency band, sometimes Gigabit Wi. Fi because of its potential to exceed a gigabit per second on multiple streams and sometimes Very High Throughput (VHT) for the same reason. Other 8. 02. 1. 1 standards focus on specific applications of wireless networks, like wide area networks (WANs) inside vehicles or technology that lets you move from one wireless network to another seamlessly. Wi. Fi radios can transmit on any of three frequency bands. Or, they can "frequency hop" rapidly between the different bands.
Wi-Fi Information and Advice Information, help and advice on wi-fi wireless networking, especially for mobile phones and handheld devices. What is Wi-fi? What does WIFI mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: WIFI. VirtualWiFi (previously known as MultiNet) is a virtualization architecture for wireless LAN (WLAN) cards. It abstracts a single WLAN card to appear as multiple.
Frequency hopping helps reduce interference and lets multiple devices use the same wireless connection simultaneously. As long as they all have wireless adapters, several devices can use one router to connect to the Internet. This connection is convenient, virtually invisible and fairly reliable; however, if the router fails or if too many people try to use high- bandwidth applications at the same time, users can experience interference or lose their connections.
Although newer, faster standards like 8. Next, we'll look at how to connect to the Internet from a Wi.
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