The Gateway to Computer Science Excellence
0 votes
41 views
A system uses selective repeat protocol with window size of 4. If each packet carries 5000 bits , then the time taken to tranfer 5 milion bits of data, if the distance between sender and receiver is 2500km , the propagation speed is 2* 10^8 m/s and data rate is 1Mbps. We assume no data or ACK is lost
in Computer Networks by Loyal (7.3k points)
closed by | 41 views
0
is it 7.5 sec?
0
answer given 11.25
0
i am trying to calculate the efficiency and then find the effective bandwidth.
0

@balchandar reddy san

@jatin khachane 1

they are sending the second round of packets once all the ack of the previous round is received.

i.e.. when all the ack of the 4 packets sent in the first round arrives we start to transmit second round. This is not how SR protocol works

Hence, the answer given is wrong.

answer should be 7.49.

 

Related questions

Quick search syntax
tags tag:apple
author user:martin
title title:apple
content content:apple
exclude -tag:apple
force match +apple
views views:100
score score:10
answers answers:2
is accepted isaccepted:true
is closed isclosed:true
50,647 questions
56,475 answers
195,396 comments
100,380 users