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