Uttam Lal Rajbanshi

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  What is data communication? What are the five components of data communication? Ans: Data communication is the transmission of digital data between two or more computers and a computer network or data network is a telecommunications network that allows computers to exchange data. The five components of data communication are: Message sender receiver Transmission medium & protocol  differentiate between simplex ,half duplex and full duplex mode... what is a communication media? differentiate between guided media and unguided media. Answer:Communication media refers to the means of delivering and receiving data or information. What is Coaxial Cable ? give some of its practical uses. answer:A coaxial cable is an electrical cable with a copper conductor and an insulator shielding around it and a braided metal mesh that prevents signal interference and cross talk. Coaxial cable is also known as coax. Coaxial cable is commonly used by cable operators, telephone companies, and internet