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Question

here is my approach.

at max packets needs to travel 1000m distance so propagation delay should be

Tp=(1000)/(2x10^8) = 5 micro sec

hub having delay of 2.5 micro sec

so for collision detection it needs

Tt >= 2*Tp + hub delay

L>=B(2x5+ 2.5)

L>=125 bits

so at max we need minimum 125 bits

please tell me where i m wrong ???????

Comments

@garimanand the computers are communicating with each other throughthe hub so for Tp shouldnt the max distance be 1900?

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oh thanks a lot i miss that point now everything is clear.....