Transcription of COMPUTER NETWORKS Lecture Notes
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COMPUTER NETWORKS Lecture Notes
COMPUTER NETWORKS . Lecture Notes DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING. SHRI VISHNU ENGINEERING COLLEGE FOR WOMEN. (Approved by AICTE, Accredited by NBA, Affiliated to JNTU Kakinada). BHIMAVARAM 534 202. 0. UNIT -I. Introduction to COMPUTER NETWORKS Data Communication:When we communicate, we are sharing information. This sharing can be local or remote. Between individuals, local communication usually occurs face to face, while remote communication takes place over distance. Components: A data communications system has five components. 1. Message. The message is the information (data) to be communicated. Popular forms of information include text, numbers, pictures, audio, and video. 2. Sender. The sender is the device that sends the data message.
digital or an analog signal. 1.1.3 Data Flow ... In half-duplex mode, each station can both transmit and receive, but not at the same time. ... node can be a computer, printer, or any other device capable of sending and/or receiving data generated by other nodes on the network.
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