The function of wifi

WiFi is a commonly used term, but what does it mean? Let aok help you figure out

WiFi is a form of local area networking and wireless Internet access used by people around the world to connect their devices to the Internet without cables.

This article will help you understand what WiFi means, how it works, and some other useful information.

What does WiFi stand for?

WiFi is often thought to stand for Wireless Fidelity, but in fact the term WiFi was created as a result of an effort to find a more catchy name for the newly invented wireless technology, IEEE 802.11b Direct Sequence , is still in use today.

According to Wikipedia and some other sources, the term WiFi has no meaning. It's just a name created by the brand consulting firm, Interbrand, after signing a contract with the Wi-Fi Alliance, to name their new wireless technology, not a shortened form of Wireless Fidelity.

However, there is an explanation for misconceptions about what WiFi means. The misconception arose due to the advertising slogan used by the Wi-Fi Alliance shortly after the WiFi name was adopted: "The Standard for Wireless Fidelity".

Next, let's move on to the definition of this term.

What is WiFi?

WiFi is a networking technology that allows you to connect to the Internet wirelessly. It is also known as 802.11, which is the IEEE standard of wireless local area networks (WLAN).

WiFi networks operate in the unlicensed 2.4GHz and 5GHz frequency bands, which means it doesn't interfere with other nearby wireless networks operating on those same frequencies (or bandwidths).

How does WiFi work?

Modern WiFi networks work like a wired Ethernet local area network (LAN) connection. The only difference is that they use unlicensed spectrum frequencies to transmit data over short distances at high speeds, much like mobile broadband for cell phones.

The WiFi standard was developed by the Society of Electrical and Electronics Engineers (IEEE) to provide wireless access in a local area, usually in a home or office building.
For WiFi to work, a wired access point (base station) is required to connect WiFi devices. WiFi devices communicate with the access point using radio frequency (RF) signals, much like cordless phones.

Some popular WiFi connection standards
Technically, WiFi signals work sending and receiving data at 2.5GHz to 5GHz, much higher than the frequency of cell phone, radio... WiFi signals can contain much data but are limited in transmission range - distance. What about other types of waves, although of low frequency, can travel long distances?



Wifi waves use the 802.11 connection standard in the IEEE (Institute of Electrical and Electronics Engineers) library, this standard includes 4 smaller standards a/b/g/n. (You often see on modems, routers have these symbols)

The 802.11b standard is the weakest version, operating at 2.4GHz and can handle up to 11 megabits per second.
The 802.11g standard is slightly better than standard b, although it also operates at 2.4GHz but it can handle 54 megabits per second.
The 802.11a standard broadcasts at a higher frequency of 5GHz and has a processing speed of 54 megabits per second.
Finally, the 802.11n standard operates at 2.4GHz but has a processing speed of up to 300 megabits per second.
How is WiFi used?
WiFi provides a wireless alternative to a wired network to share data between devices in the same building or area, such as laptops and smartphones, that are connected to an Internet router to share. file.

WiFi also replaces the cable running from the computer directly into the router or Internet modem, allowing you to access over WiFi to the Internet through WiFi hotspots (WiFi Hotspot).

What is WiFi Hotspot?
WiFi Hotspot or WiFi hotspot is a location with a wireless Internet access signal, which is usually free to use. You can usually find these hotspots in cafes or restaurants that provide network services for the convenience of customers.

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WiFi networks are also found in airports, hotels and other public spaces, where they are provided for the convenience of customers. Some WiFi hotspots offered by WiFi providers allow you to connect for a fee, while others are free WiFi connections.