Dark Mode

Recent questions tagged pure-aloha

0 votes

0 answers

1

Aloha network
Given an ALOHA network: - Speed of the channel is 10Mbit/s. Channel length is 500m. Speed of signal in the channel is 2*10^8 m/s. - There're 30 computers connected to this network - The average speed of data flow from the application ... with the length of each packet is 100bit and 1000bit. Discus about the relationship between packet length, channel length and throughput S max?

Omachi asked in Computer Networks Aug 1, 2023

by Omachi

564 views

0 votes

2 answers

2

#Self Doubt
When we say that vulnerable time in pure aloha will be 2*frame transmission time.So what this frame transmission time?? My doubt is does frame transmission time= propagation time+transmission time … collision can also happen during propagation time ??

lalitver10 asked in Computer Networks Sep 14, 2022

954 views

4 votes

1 answer

3

Pure Aloha | Made Easy Full Syllabus Test
A group of N stations shares a 100 Kbps pure ALOHA channel. Each station outputs a 1000 byte frame on average once every 50 seconds. The maximum value of N is ________. This is the solution they have provided, and i cannot make any sense out of it.

palashbehra5 asked in Computer Networks Jan 11, 2022

by palashbehra5

2.0k views

4 votes

1 answer

4

Applied Test Series
Suppose that the PURE ALOHA protocol is used to share a 50 Kbps satellite channel, suppose that frames are 1000 bits long. Find the maximum throughput of the system in frames/second. [Note: Assume K = 10^3, write the floor value of the answer]

LRU asked in Computer Networks Oct 13, 2021

by LRU

2.6k views

25 votes

2 answers

5

GATE CSE 2021 Set 2 | Question: 54
Consider a network using the pure $\text{ALOHA}$ medium access control protocol, where each frame is of length $1,000$ bits. The channel transmission rate is $1$ Mbps ($=10^6$ bits per second). The aggregate number ... the average number of frames successfully transmitted per second. The throughput of the network (rounded to the nearest integer) is ______________

Arjun asked in Computer Networks Feb 18, 2021

by Arjun

13.9k views

6 votes

1 answer

6

Data communication and networking by forouzan 12.7 Exercise Qn 16
16. In a CDMA/CD network with a data rate of 10 Mbps, the maximum distance between any station pair is found to be 2500 m for the correct operation of the collision detection process. What should be the maximum distance if we increase the data rate to 100 Mbps? To 1 Gbps? To 10 Gbps?

Mk Utkarsh asked in Computer Networks Nov 7, 2019

7.5k views

2 votes

1 answer

7

Data communication and networking by forouzan 12.7 Exercise Qn 15
15. In a CDMA/CD network with a data rate of 10 Mbps, the minimum frame size is found to be 512 bits for the correct operation of the collision detection process. What should be the minimum frame size if we increase the data rate to 100 Mbps? To 1 Gbps? To 10 Gbps?

Mk Utkarsh asked in Computer Networks Nov 7, 2019

7.3k views

5 votes

2 answers

8

Data communication and networking by forouzan 12.7 Exercise
11. We have a pure ALOHA network with 100 stations. If $T_{fr} = 1 \mu s$, what is the number of frames each station can send to achieve the maximum efficiency. 12. Repeat Exercise 11 for slotted ALOHA.

Mk Utkarsh asked in Computer Networks Nov 7, 2019

7.4k views

0 votes

2 answers

9

Andrew S. Tanenbaum Edition 5 Exercise 4 Question 3 (Page No. 351)
Consider the delay of pure ALOHA versus slotted ALOHA at low load. Which one is less? Explain your answer.

ajaysoni1924 asked in Computer Networks Mar 15, 2019

by ajaysoni1924

5.6k views

3 votes

1 answer

10

Andrew S. Tanenbaum Edition 5 Exercise 4 Question 2 (Page No. 351)
A group of N stations share a 56-kbps pure ALOHA channel. Each station outputs a 1000-bit frame on average once every 100 sec, even if the previous one has not yet been sent (e.g., the stations can buffer outgoing frames). What is the maximum value of N?

ajaysoni1924 asked in Computer Networks Mar 15, 2019

by ajaysoni1924

15.4k views

1 vote

0 answers

11

Token passing and Aloha
Shall I cover token passing and aloha in flow control methods in computer network. Please suggest as I don't want to waste time if it's not in syllabus. Thanks

Mayankprakash asked in Computer Networks Dec 26, 2018

by Mayankprakash

728 views

0 votes

2 answers

12

sudo gate test series
The bandwidth of a given medium for transferring the data is 100 Mbps. The user starts with pure aloha for transmission after half of the data is transferred user switched to slotted aloha. Then how much throughput will be gain or loss by the user in the second half? A 50% loss B 100% loss 100% gain D 200% gain i am getting 100% tell me what u are getting

Gurdeep Saini asked in Computer Networks Nov 9, 2018

by Gurdeep Saini

883 views

0 votes

0 answers

13

Pure ALOHA
I have done the calculations as shown below but I do not know if my approach is correct. I would appreciate if I get some feedback Part 1 Consider a network based on pure ALOHA with Poisson distributed traffic. If the success probability is equal to P ... channel if there are 50, 500, and 5000 terminals connected? Calculate the throughput of the network for the given number of terminals.

soso asked in Computer Networks Nov 2, 2018

by soso

4.3k views

0 votes

0 answers

14

Consider 2 stations at a distance of 1 km from each other (Aloha)
Consider 2 stations at a distance of 1 km from each other. A station transmits frames of length 100 bits at the rate of 1 Mbps. Velocity of propagation is 2 * 108 m/s. Assume that each station generates frames at an average rate of 10000 frames per second. What is the probability of collision for pure ALOHA and slotted ALOHA ?

Mk Utkarsh asked in Computer Networks Oct 2, 2018

736 views

1 vote

1 answer

15

Computer Network Aloha
100 stations on a pure ALOHA network share a 1Mbps channel. If frames are 1000 bits long, find throughput if each station is sending 10 frames per second.

Vaishnavi01 asked in Computer Networks Sep 11, 2018

12.0k views

0 votes

1 answer

16

Pure ALOHA
A pure ALOHA network transmits 200-bit frames on a shared channel of 200 kbps. What is the throughput if the system (all stations together) produces 1000 frames per second? Please solve by mentioning step by step procedure!

Naveen Kumar 3 asked in Computer Networks Jun 9, 2018

by Naveen Kumar 3

10.6k views

1 vote

1 answer

17

Computer Networks 5th edition by Tanenbaum chapter 4 question 4
A large population of ALOHA users manages to generate $50 \hspace{0.1cm} requests/sec$, including both originals and retransmissions. Time is slotted in units of $40 \hspace{0.1cm} msec$. What is the chance ... is the probability of exactly k collisions and then a success? What is the expected number of transmission attempts needed?

Abhilash Mishra asked in Computer Networks May 29, 2018

by Abhilash Mishra

1.2k views

1 vote

1 answer

18

Pure Aloha
An aloha network user $19.2 \text{ kbps}$ channel for sending message packets of $100 \text{ bits}$ longsize. calculate the maximum throughput for pure aloha network.

Abhishek Malik asked in Computer Networks May 21, 2018

by Abhishek Malik

7.6k views

5 votes

1 answer

19

Gateforum-Pure Aloha Numerical
Groups of user stations(N) share a 56Kbps pure aloha channel. Each station outputs a 1000 bits frame on an average of once every 100sec(stations are buffered). What is the max value of N? Answer is 1030. Please give detailed solution.

MiNiPanda asked in Computer Networks Jan 8, 2018

4.5k views

5 votes

1 answer

20

Tanenbaum
A large population of ALOHA users manages to generate 50 requests/sec, including both originals and retransmissions. Time is slotted in units of 40 msec. a. (a) What is the chance of success on the first attempt? b. (b) What is the probability of exactly k collisions and then a success? c. (c) What is the expected number of transmission attempts needed?

atul_21 asked in Computer Networks Oct 9, 2017

11.1k views

1 vote

1 answer

21

A Pure Aloha transmits 200 bits frame on a shared channel of 200 kbps.What is time required to make Collision free?

LavTheRawkstar asked in Computer Networks Apr 5, 2017

by LavTheRawkstar

7.4k views

2 votes

0 answers

22

Aloha
I have a lot of problems to solve numericals of Aloha. In Test series they are asking such questions which i'm unable to understand. Is there any good material for it? Please provide it or explain some concepts.

target2017 asked in Computer Networks Jan 5, 2017

1.3k views

1 vote

2 answers

23

UGC NET CSE | June 2016 | Part 3 | Question: 27
A Pure ALOHA Network transmits 200 bit frames using a shared channel with 200 kbps bandwidth . If the system (all stations put together) produces 500 frames per sec , then the throughput of the system is 0.384 0.184 0.286 0.586

Sanjay Sharma asked in Computer Networks Jul 18, 2016

by Sanjay Sharma

12.2k views

2 votes

3 answers

24

Let a cluster of stations share 48 Kbps of pure Aloha channel. Every station outputs frames of length 1024 bits on an average of every 50 seconds. Then what is the maximum value of number of stations?

Parul Agarwal asked in Computer Networks Dec 24, 2014

by Parul Agarwal

6.1k views

To see more, click for the full list of questions or popular tags.

Recent questions tagged pure-aloha