What is Wi-Fi? What are the advantages and disadvantages of Wi-Fi?

What is Wi-Fi?

The full form of Wi-Fi is – (Wireless Fidelity) . Wi-Fi is a type of radio wave used to operate high-speed internet and networks.

Wi-Fi allows you to access the Internet without it between mobiles, laptops, and various network devices. Wi-Fi belongs to the local area network topology.

Thus, Wi-Fi can be used indoors or across a small space.

In other words, the technology that can be used to connect to the Internet within certain limits is called Wi-Fi.

It is a popular wireless technology that allows radio waves to be used to exchange data through an electronic device connected to a computer’s local area network, including high-speed Internet access.

What are the features, advantages and disadvantages of Wi-Fi?

Features of Wi-Fi:
1. Wi-Fi Wireless Local Area Network (WLAN) in the IEEE 802.11 standard.
2. Wi-Fi communication system uses high frequency radio web.
3. No cabling is required for the network. Half duplexing mode is used.
4. Wi-Fi can be used to connect multiple computers to the Internet at the same time.
5. There are different types of encryption facilities for uninterrupted signal transfer. There are also network roaming facilities for multiple access points.
6. Wi-Fi coverage area is usually between 32 meters for indoor and 95 meters for outdoor.
7. Wi-Fi products are certified by the WiFi Alliance.
8. The initial frequency band of Wi-Fi is 2.4 GHz but now this band is up to 5.85 GHz.
9. Wi-Fi signal noise (signal-to-noise ratio-SNR) is a maximum of 10dB (decibel).
10. It uses 64 channel OFDM (Original frequency-division multiplexing) and MIMO (Multiple-input and multiple-output) technology.
Benefits of Wi-Fi:
1. Wi-Fi technology can be used to connect multiple computers to the Internet at the same time.
2. This is a completely wireless local area network (WLAN) Wireless LAN system. Wireless also has the advantage of portability.
3. Wi-Fi can be used to access wireless internet in hotels, cafes, universities, airports and other important places.
4. Wi-Fi technology is very easy to use in a limited area. In addition, the Internet can be easily accessed with the help of Wi-Fi.
5. Wi-Fi connection is easily available in places where cable connection is not possible.
7. Wi-Fi network does not require government approval.
6. Any standard Wi-Fi device can work anywhere in the world.
৮. Using Wi-Fi to watch and talk videos simultaneously.
9. Wi-Fi can be easily accessed on a variety of devices (e.g., smartphones, tablets, laptops, computers, etc.).
10. The speed of Wi-Fi is very fast, so its users are increasing day by day.
Disadvantages of Wi-Fi:
1. Wi-Fi access is limited to about 30 – 100 meters, that is, 100 to 300 feet.
2. Wi-Fi coverage is not available in most areas.
3. Wi-Fi data transfer speeds are moderate. In addition, as the number of users increases, the data transfer rate decreases.
4. Wi-Fi security is relatively weak.
5. Wi-Fi passwords can be hacked at any time.
7. Wi-Fi cannot be used while traveling.
৭. Wi-Fi does not allow data exchange over a wide area.
7. Using Wi-Fi is a bit expensive.