The Gateway to Computer Science Excellence
+1 vote
531 views
Suppose that N ethernet stations, all trying to send at the same time, require N/2 slot times to sort out who transmits next. Assuming the average packet size is 5 slot times, express the utilization of ethernet as a function of N

a. 5/(N+10)
b. 10/(10+N)
c 10/N
d. 10/(5+N)
in Computer Networks by Active (3.9k points) | 531 views

1 Answer

+6 votes

Here : 

Polling Time = N/2

Polling time is time taken to select which station will transmit next. 

Propogation time is Not given so neglect it.

Now , 

Utilization= (Transmission Time)/(Transmission Time + Polling Time)

= 5/(5+N/2)

=10/(10+N)

So Option B

by Active (3.9k points)
edited by

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
50,654 questions
56,166 answers
193,872 comments
94,261 users