Relier Pairs Digital Data Communication Version en ligne Techniques and Multiplexing par Aidora Abdullah 1 Bits are sent simultaneously over a number of lateral wires. 2 Demultiplexing delivers received segments at the receiver side to this layer in the OSI reference model. 3 Time Division Multiplexing 4 Uses of parallel transmission 5 6 The form that data travels in digital devices. 7 8 Example of simplex transmission 9 10 Disadvantages of parallel transmission 11 The layer in the OSI reference model which is the junction for multiplexing and demultiplexing. 12 Uses of serial transmission 13 Example of duplex transmission 14 Bits are sent consecutively over a single wire. 15 Wavelength division multiplexing (WDM) 16 The 4-tuple to identify a TCP socket in connection-oriented multiplexing and demultiplexing 17 Example of half-duplex transmission 18 19 Multiplexing technique to transmit analog signals. 20 Sending data from one particular device to another, and measured in bits. Multiplexing Long range transfers, almsot all external components connected to another device, connecting a phone/keyboard/printer to a laptop. Takes data stream from one high-speed line and breaks into portions and sends over several lower-speed lines simultaneously. Demultiplexing parallel transmission Frequency Division Multiplexing (FDM) Application layer Example of connectionless multiplexing and demultiplexing source IP address source port number destination IP address destination port number Transport Layer serial transmission Data transmission Data can be lost, receiving device has to reorder data, crosstalk. Uses light signals transmitted through fiber optic channels whereby very narrow bands of light are combined from several sources to make a wider band of light. Integrated circuits, busses, connecting internal hard disk to a CPU.
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