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Suppose the length of a 10Base5 cable is 2500 m. If the speed of propagation in a 
thick coaxial cable is 200,000,000 m/s, how long does it take for a bit to travel 
from the beginning to the end of the network? Assume that there is a 10 μs delay 
in the equipment due to repeaters and there is a repeater for every 500 meters?
A. 26.5 micro seconds
B. 52.5 microseconds
C. 47.5 micro seconds
D. 37.5 micro seconds

 

asked in Computer Networks by Junior (529 points) | 30 views
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b?
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yes @ himgta  would u pls explain

0

4 repeater will be used, so overall delay because of repeaters = 4*10μs = 40μs

how long does it take for a bit to travel 
from the beginning to the end of the network?

This would be propagation delay. which is distance/speed = 12.5μs.

so overall = 40μs + 12.5μs = 52.5μs

 

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