Wired / Wireless Networking

 On basis of physical medium, there are 2 types of networks:

(a) Wired Network: As we all know, “wired” refers to any physical medium made up of cables. Copper wire, twisted pair, or fiber optic cables are all options. A wired network employs wires to link devices to the Internet or another network, such as laptops or desktop PCs.

(b) Wireless Network: “Wireless” means without wire, media that is made up of electromagnetic waves (EM Waves) or infrared waves. Antennas or sensors will be present on all wireless devices. Cellular phones, wireless sensors, TV remotes, satellite disc receivers, and laptops with WLAN cards are all examples of wireless devices. For data or voice communication, a wireless network uses radiofrequency waves rather than wires.

Types of Networks

(a) Wi-Fi

The industry-standard wireless local area network (WLAN) technology for linking computers and other electronic devices to one another and the Internet. Wi-Fi is a wireless variant of a wired Ethernet network that is frequently used in conjunction with it (see Ethernet). 
WiFi is a type of wireless networking that uses radio frequencies to send and receive data. WiFi allows users to connect to the Internet at high speeds without the necessity of cables. WiFi stands for “wireless fidelity” and is a phrase that is often used to refer to wireless networking technologies. A wireless router is used to connect to the internet. When you connect to Wi-Fi, you’re connecting to a wireless router that connects your Wi-Fi-enabled devices to the Internet.

(b) Bluetooth

Bluetooth is a telecommunication industry standard that outlines how mobile devices, PCs, and other equipment can communicate wirelessly across short distances. This wireless technology allows Bluetooth-enabled devices to communicate with one another. It connects desktop and laptop computers, PDAs (such as the Palm Pilot or Handspring Visor), digital cameras, scanners, cellular phones, and printers over short distances.

Infrared used to serve the same purpose as Bluetooth, but it had a few disadvantages. If an object were to be placed between the two communication devices, for example, the communication would be disrupted. (If you’ve ever used a television remote control, you’ve probably observed this limitation.) The infrared transmission was very slow, and devices were frequently incompatible with one another.

Because Bluetooth technology is based on radio waves, items or even walls can be placed between communication devices without disrupting the connection. Bluetooth also employs a common 2.4 GHz frequency, ensuring that all Bluetooth-enabled devices are interoperable. The sole disadvantage of Bluetooth is that its range is restricted to 30 feet due to its high frequency.

Bluetooth is a computer and telecommunications industry standard that defines how devices connect with one another. Computers, computer keyboards and mice, personal digital assistants, and cellphones are all Bluetooth-enabled devices. Bluetooth consumes less energy and is less expensive to set up than Wi-Fi. Because of its lower power, it is less likely to suffer from or cause interference with other wireless devices operating in the same 2.4GHz radio band.