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