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