Question: With a sliding window protocol and a maximum window size of 7 , a three - bit field is used to hold the window size.

With a sliding window protocol and a maximum window size of 7, a three-bit field is used to hold the window size. A three-bit value gives 8 combinations, from 0 to 7. Why then can a transmitter send out only a maximum of 7 packets at one time and not 8?

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