The four basic elements of any communication system include____. | Desktop Support mcq's

 A.     peer-to-peer, videoconferencing, online photo-conferencing, net optical
 B.     sending and receiving devices, communication channel, connection device, and data transmission specifications
 C.     telephone lines, coaxial cables, fiber-optics cables, and communication channel
 D.     software, hardware, communication channel, network

Ans:  B