PHYSICAL LAYER AND TRANSMISSION MEDIA
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Throughput
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Bandwidth
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Data rate
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Speed
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Detailed explanation-1: -Latency is measured in milliseconds, or during speed tests, it’s referred to as a ping rate.
Detailed explanation-2: -In other words: throughput is the number of data packets being successfully sent per second, and latency is the actual time those packets are taking to get there. So, the terms are related-they both relate to data transfer and speed.
Detailed explanation-3: -A design example Latency: 1000 ns = 1000 ns * (1 s / 10^9 ns) * (100 * 10^6 clock periods/ 1s) = 10^11/10^9 = 100 clock periods. Throughput = 640 Mbits / s = (640 * 10^6 bits/s) * (1 word / 64 bits) * (1 s / 100 * 10^6 clock periods) = 640 * 10^6 / 64 * 100 * 10^6 = 10 * 10 / 100 = 1 / 10 = 0.1 words / clock period.
Detailed explanation-4: -Transmission medium: The physical path between the start point and the end point. Propagation: The further apart two nodes are the more latency there is as latency is dependent on the distance between the two communicating nodes. More items