In Go-back-N protocol, the values of f (Send = 3, S window, the first outstanding packet) n (Send window, the next packet to be send) =7, after receiving the packet with AckNo.6, the S value of n is _____
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Correct answer: B. 7
Explanation
An ACK with number 6 acknowledges everything before 6, so Sf slides to 6. Sn, the next new frame to send, is unchanged at 7.
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