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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. |