What are the propagation time and the transmission time for a 5-Mbytemessage (an image) if the bandwidth of the network is 1 Mbps? Assume that thedistance between the sender and the receiver is 12,000 km and that light travelsat 2.4 × 108 m/s.
Question
What are the propagation time and the transmission time for a 5-Mbytemessage (an image) if the bandwidth of the network is 1 Mbps? Assume that thedistance between the sender and the receiver is 12,000 km and that light travelsat 2.4 × 108 m/s.
Solution
First, let's convert the size of the message from Mbytes to bits because the bandwidth is given in bits per second (bps).
1 byte = 8 bits So, 5 Mbytes = 5 * 10^6 * 8 = 40 * 10^6 bits = 40 Megabits
Now, let's calculate the transmission time. The transmission time is the amount of time required to push all of the packet's bits into the link. This can be calculated using the formula:
Transmission Time = Size of the file / Bandwidth
So, Transmission Time = 40 Megabits / 1 Mbps = 40 seconds
Next, let's calculate the propagation time. The propagation time is the time required for a bit to travel from the sender to the receiver. This can be calculated using
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