What is wifi ?

What is Wi-Fi?

Wi-Fi is a wireless networking technology based on the IEEE 802.11 family of standards. It is most commonly used in local area networks to connect various digital devices. Its primary function is to provide device-to-device connectivity. Portable WiFi allows you to share your wireless Internet connection and Internet access with others without having to worry about wires.

Wi-Fi is a wireless networking technology

Wi-Fi is a wireless networking technology that allows you to connect devices without wires. The name “Wi-Fi” comes from a group of companies that came together to develop and promote a new wireless standard. It was not originally intended to be an abbreviation for wireless fidelity, but was chosen for the sound it makes. Today, there are more than 50,000 different types of Wi-Fi products.

Wi-Fi has many applications and can be categorized into two styles: infrastructure mode and ad hoc mode. In infrastructure mode, there is an access point that connects all devices on the network. Clients then connect to the access point and gain access to the network. Ad-hoc mode, on the other hand, does not require an access point. The network is comprised of many client devices connecting to each other directly.

It uses radio frequency waves for wireless high-speed Internet and network connections

WiFi is a wireless technology that uses radio frequency waves to make Internet and network connections. Its operational range varies depending on the radio power output, antenna type, gain, and modulation method used. Distances between devices also affect the speed of the connection. In general, longer distances result in slower speeds and greater signal absorption. Most Wi-Fi devices are low-power devices and their maximum power is regulated by local regulations.

WiFi uses two radio frequency bands: 2.4 GHz and 5 GHz. These frequencies are different than those used by walkie-talkies and cell phones. Cell phones and weather radios receive frequencies in the Megahertz range, whereas WiFi uses the Gigahertz range.

It uses multiple modulation schemes

WiFi uses multiple modulation schemes in order to transmit data. These schemes split the signal into multiple subcarriers, each representing a single bit. Typically, these subcarriers are separated by one nanosecond, which is the same as the bit rate. In addition, this type of signal processing is more resistant to fading, multipath reflections, and propagation effects.

The most basic and common modulation scheme is QAM. It is the fastest method, but it is unreliable. QAM uses 16 different signals with varying phases and frequencies.

It provides device-to-device connectivity

Device-to-device (D2D) communication is a type of Internet-of-Things (IoT) connectivity where two or more devices communicate directly with each other. It can be achieved using a variety of networks, but is typically based on Bluetooth, Z-Wave, or ZigBee. This kind of communication is most commonly used in home automation systems. It allows devices to share data without the need to share it with other devices or people.

It uses security protocols

IPsec is a set of security protocols that encrypts and decrypts data in network communications. It protects sensitive data from replay attacks and provides data confidentiality and integrity. IPSec also protects against tampering by digitally signing the entire packet. In addition, it can prevent eavesdropping and connection hijacking.

These protocols protect financial data, files, and other sensitive information during data transmission and storage. They can show algorithm details, data structure, and representation, and apply secure multi-party computation, secret-sharing processes, and encryption methods. These protocols are essential to ensuring the safe delivery of data between two ends. There are several protocols available, including SSL and TLS.

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