What is Wi-Fi?
Q: What is Wi-Fi?
A: Wi-Fi is a way of connecting to a computer network using radio waves instead of wires. It was invented to connect computers that are near each other, and nowadays is much used for Internet connections. The Wi-Fi Alliance says Wi-Fi is any "wireless local area network" (WLAN) that follows the Institute of Electrical and Electronics Engineers' (IEEE) 802.11 specification.
Q: How does it work?
A: A Wi-Fi device can work with any Wi-Fi network anywhere in the world. The word Wi-Fi is a play on words with hi-fi, and was invented to replace the name "IEEE 802.11b Direct Sequence Spread Spectrum". As of 2013, most wireless networks use one of two radio frequency bands - 2.4 GHz or 5 GHz - both with their own benefits and drawbacks.
Q: Is there any danger associated with using Wi-Fi?
A: According to the World Health Organization (WHO), there is no danger associated with using Wi-Fi.
Q: What are the two most commonly used radio frequency bands for wireless networks?
A: The two most commonly used radio frequency bands for wireless networks are 2.4 GHz and 5 GHz.
Q: What are some benefits of using the 2.4GHz band?
A: Some benefits of using the 2.4GHz band include that devices are usually cheaper and it's widely used; however, microwave ovens, DECT telephones and other wireless devices also use this band which can cause interference which slows transmissions.
Q: What are some advantages of using the 5GHz band?
A: Some advantages of using the 5GHz band include that it has more frequencies available which usually leads to less interference; however, there may be more rules for its usage in certain places, such as not being able to be used outdoors in some areas, plus devices that do use this band tend to be more expensive than those that use 2.4GHz .
Q: Who says that WiFi isn't dangerous?
A:The World Health Organization (WHO) says that WiFi isn't dangerous
