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