Question

what are wired and wireless channels

Answer 1

"Wired Channels" would be referring to the transmitting over a wire-based communication technology. Such as telephone networks, cable television or internet access, and fiber-optic communication.

"Wireless Channels" are the opposite. The communication and technology is transmitted over electromagnetic waves (EM Waves). An Advantage of using wireless rather than wired would be that it allows you to move around more freely without being hindered by wires and whatnot.

Hope this is helpful :)

Answer 2

"Wired" is the term refers to any physical medium consisting of cables. The cables can be copper wire, twisted pair or fiber optic. Wired network is used to carry different forms of electrical signals from one end to the other. Mostly in wired network one internet connection is being taken using T1 line, cable modem or using any other means. This connection is shared among multiple devices using wired network concept.

"Wireless" is the term refers to medium made of electromagnetic waves (i.e. EM Waves) or infrared waves. All the wireless devices will have antenna or sensors. Typical wireless devices include cellular mobile, wireless sensors, TV remote, satellite disc receiver, laptops with WLAN card etc. Wireless network does not use wires for data or voice communication; it uses radio frequency waves as mentioned above. The other examples are fiber optic communication link and broadband ADSL etc.