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Calculate the time required to send a 56 byte packet from Sydney to Melbourne if the data rate is155mbps, the distance traveled is 1000km and the speed of propagation is 2.8*10^8m/s.
 2 years ago
 2 years ago
Calculate the time required to send a 56 byte packet from Sydney to Melbourne if the data rate is155mbps, the distance traveled is 1000km and the speed of propagation is 2.8*10^8m/s.
 2 years ago
 2 years ago

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Let's say the packet starts being transmitted at t=0. The propagation time is d/c = 1000e3/2.8e8 = 3.5714e3 seconds. This is when the leading edge of the packet just starts arriving at the receiver. The duration of the packet is 56 / 115e6 = 4.87e7 seconds. The entire packet will have arrived at the receiver at the sum of these two times, or 3.5719 msec.
 one year ago
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