The Gateway to Computer Science Excellence
First time here? Checkout the FAQ!
x
+1 vote
48 views

The data link layer uses a fixed-size sliding window protocol, where the window size for the connection is equal to twice the bandwidth-delay product of the network path. Consider the following three scenarios, in each of which only the given parameter changes as specified (no other parameters change). For each scenario, explain whether the throughput (not utilization) of the connection increases, decreases, remains the same, or cannot be determined:

  1. the packet loss rate $L$ decreases to $L/3$;
  2. the minimum value of the round trip time $R$ increases to $1.8R$;
  3. the window size $W$ decreases to $W/3$
in Computer Networks by Boss (41.6k points) | 48 views
0
1. loss rate decreases ie, efficiency  increases, throughput = efficiency * bandwidth,so throughput increases.

2.RTT  increases means Tp increases, so windowsize =1 + Tt/Tp decreases , as throughput=L/1+2a ,so throughput increases.

3.Windowsize decreases ,so throughput will increase.considering Throughput =Length of the packet/window size)

Correct me if I am wrong.
0

@Akash Ghosh @Arjun @srestha 

There is an ambiguity in the Question. Throughput is also Called Bandwidth Utilization. They haven't mentioned which Utilization it is, Line Utilization or Bandwidth Utilization

 

0

@Akash Ghosh

Window size is $1 + Tp/Tt$

0
They asked for throughput.So,utilization means efficiency , what I think

Please log in or register to answer this question.

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
50,309 questions
55,742 answers
192,222 comments
90,476 users