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A TCP sender receives and ACK with ack number 1500 and window 600, r

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A TCP sender receives and ACK with ack-number 1500
and window 600, right after that, the sender receives an
ACK with ack-number 1900 and window 0:
a.-What can the sender conclude?
b.-Can the sender send more data (Yes/No)?
In another scenario, a sender sends a data segment with
sequence number 0 and size 500[bytes], then it sends
another data segment with sequence number 500 and size
500[bytes], and finally a third segment with sequence
number 1000 and size 500[bytes]. After this, the sender
gets two ACKs with ack number 0:
a.-What can the sender conclude?
b.-What should the sender do?
Solution
first scenario:--
a:- sender can conclude:--
now sender receives an ACK with ack-number 1900 and
window 0
so here the window is 0 ..means receiver doesn\'t wants to
receive any data... and previously sent data has arrived..
b.sender doesn\'t have to send any data..
second scenario:--
a:-sender can conclude:-

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A TCP sender receives and ACK with ack -number 1500 and window 600, right after that, the sender receives an ACK with ack-number 1900 and window 0: a.-What can the sender conclude? b.-Can the sender send more data (Yes/No)? In another scenario, a sender sends a data segment with sequence number 0 and size 500[bytes], then it sends another data segment with sequence number 500 and size 500[bytes], and finally a third segment with sequence number 1000 and size 500[bytes]. After this, the sender gets two ACKs with ack number 0: a.-What can the sender conclude? b.-What should the sender do? Solut ...
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