Computer Networks Go-Back-N Multi-part Question: Consider Go-Back-N with the fol

Question

Computer Networks Go-Back-N Multi-part Question:

Consider Go-Back-N with the following scenerio The window size if 10 (send) Base is 19 Nextseqnum is 22 The receiver next expects packet 20 How many more packets can the sender receive from the application without getting any more ACKs? What is the number of the last ACK'd packet? How many un-ACK'd packets are there? - The receiver just received packet 21 What packet number does the receiver expect next? How many packets will be sent to the application? The sender's timer times out How many packets are resent? The sender receives an ACK for packet 20 What will the new value of (send) base be? How many packets remain unACK'd?

Explanation / Answer

sender can receive 10 numbers with out any acknowledgement. last ack'd packet is 10 there are 9 un-ack'd packets.

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