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4- A 50 km long cable runs at the rate of 1 Mbps. The propagation speed in the cable is 2/3 the speed of light

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4- A 50 km long cable runs at the rate of 1 Mbps. The propagation speed in the cable is 2/3 the speed of light in vacuum. a- How many bits fit in the cable? b- Assuming a frame size of 50 bytes, what is the minimum number of sequence numbers you need in order to run a selective repeat sliding window protocol on the link

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