Number of packets transmitted

Question

Using GBN-7(go back 7) we send 10 packets and if every 5th packet is lost then  total number of transmissions will be_____?

Comments

what is wrong with Gurdeep Saini explanation ?

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Shaik Masthan

If some big number of packets are given, then how to handle this kind of problem ??

I mean, suppose we're sending 1000 or 10,000 packets using GB7 where every 5th packet is lost, then total no. of transmission & retransmission ??

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Great

Answer 1

so 18 is total transmission,

another way of representation is

Comments

The question is incomplete it should mention by using cumulative ack or individual ack, so two answer possible,

Using individual ack there will be 21 packets will be send and using cumulative ack 18 packets will be answer.

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First of all your question is incomplete so ambigous because it's not mentioning what kind of ack you have to use, you are using cumulative ack so your answer is 18 but 21 is also possible uaius individual ack.

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why window size is 6 despite in question it is clearly given as 7

Answer 2

The question is incomplete it should mention by using cumulative ack or individual ack, so two answer possible,

Using individual ack there will be 21 packets will be send and using cumulative ack 18 packets will be answer.