What is laptop WiFi? How to use it?

Wi-Fi is a technology that can wirelessly connect terminals such as personal computers and handheld devices (such as PADs and mobile phones). It's actually a high-frequency radio signal. Wireless security is really a brand of wireless network communication technology, which is owned by Wi-Fi Alliance. The purpose is to improve the interoperability between wireless network products based on IEEE 802. 1 1 standard. Some people call the local area network using IEEE 802. 1 1 series protocols wireless fidelity. Even equate Wi-Fi with wireless Internet (Wi-Fi is an important part of WLAN).

Regarding the pronunciation of the abbreviation "Wi-Fi", according to the pronunciation notes of the English Standard Webster's Dictionary, the standard pronunciation is/? wa？ . Law? /Because the word WI-FI is composed of two words, it is better to write it in Wi-Fi, so there is no so-called pronunciation problem as experts say. Similarly, there is HI-FI(/ha? . Law? /)。

20 14 August, Ruben Santamarta, a network security researcher, said that if the airplane WiFi was too open, it might be used by hackers for hijacking.