ISM6222 Notes .docx

ISM6222 Notes .docx - ISM6222 Chapter 1 dproc = processing...

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ISM6222 Chapter 1 d proc = processing delay (always equals 0) d queue = queuing delay (always equals 0) d trans = transmission delay d prop = propagation delay d nodal = d proc + d queue + d trans + d prop d trans : L = 1000 byte = 1000 (8 bits) = 8000 bits = 80 x 10 -6 sec = 80 microsec R = 100 mbps 100 x 10 6 bit/sec 100 x 10 6 bit/sec 1 byte = 8 bits 1 mbps = 1 x 10 6 bit/sec 1 microsecond = 10 -6 seconds d prop : d = 2.5 km = 2500 m = 12.5 microsec s 200 m/microsec 200 m/microsec 1 km = 1000 meters d nodal: d nodal = d proc + d queue + d trans + d prop d nodal =(0 + 0 + 80 microseconds + 12.5 microsec) x 2 d nodal = 92.5 x 2 d nodal = 185 microseconds Store and Forward Conduct all activities and then move to next place Binary System 132 = 128 + 4 + 2 = 2 7 + 2 2 + 2 1 = 1* 2 7 + 0* 2 6 + 0* 2 5 + 0* 2 4 +

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