Recent questions tagged flow-control-methods / GATE Overflow for GATE CSE

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1

MIT Practice Problems
Ben Bitdiddle implements a reliable data transport protocol intended to provide "exactly once" semantics. Each packet has an 8-bit incrementing sequence number, starting at 0. As the connection progresses, the sender "wraps around" ... 100 milliseconds.What is the highest throughput achievable if Ben's implementation is stop-and-wait?(in Kbytes/sec)

Ben Bitdiddle implements a reliable data transport protocol intended to provide "exactly once" semantics. Each packet has an 8-bit incrementing sequence number, starting ...

rexritz

372 views

rexritz asked Dec 4, 2023

2 votes

0 answers

2

madeeasy ots
In first option one bit error to merge two consecutive frames into one – I cannot understand this. B should be 2^k/2-1 for selective reject. It should be false . Right??

In first option one bit error to merge two consecutive frames into one – I cannot understand this. B should be 2^k/2-1 for selective reject. It should be false . Right...

Sajal Mallick

220 views

Sajal Mallick asked Dec 2, 2023

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1 answer

3

FLOW CONTROL
A 2 Mbps satellite links 2 ground stations. Height of the satellite from the ground station is 10,000 Km and speed of signal is 3 × 108 m/s. Given packet size = 100 B. Find out the efficiency percentage upto 2 decimal place?

A 2 Mbps satellite links 2 ground stations. Height of the satellite from the ground station is 10,000 Km and speed of signal is 3 × 108 m/s. Given packet size = 100 B. F...

24aaaa23

415 views

24aaaa23 asked Oct 2, 2023

1 votes

1 answer

4

Gate@zeal 2023 Test Series
Answer a,b,c,d

Answer a,b,c,d

SKMAKM

472 views

SKMAKM asked Oct 20, 2022

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0 answers

5

Test series question(Aceacademy)
Can someone explain it to me as to why in selective repeat it's not possible for an acknowledgment to come for a packet that falls outside the current window? Because it may be possible that there is some delayed acknowledgment. It's ... I feel is not possible because here we are talking about cumulative ack not independent. So how is this reason valid?

Can someone explain it to me as to why in selective repeat it's not possible for an acknowledgment to come for a packet that falls outside the current window? Because it ...

Ananya Nayak

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Ananya Nayak asked Dec 25, 2021

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1 answer

6

Andrew S. Tanenbaum Edition 5th Exercise 3 Question 34 (Page No. 254)
Consider an error-free 64-kbps satellite channel used to send 512-byte data frames in one direction, with very short acknowledgements coming back the other way. What is the maximum throughput for window sizes of 1, 7, 15, and 127? The earth-satellite propagation time is 270 msec.

Consider an error-free 64-kbps satellite channel used to send 512-byte data frames inone direction, with very short acknowledgements coming back the other way. What isthe...

ajaysoni1924

1.1k views

ajaysoni1924 asked Mar 16, 2019

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1 answer

7

Andrew S. Tanenbaum Edition 5th Exercise 3 Question 22 (Page No. 253)
A 3000-km-long T1 trunk is used to transmit 64-byte frames using Protocol GO back N. If the propagation speed is 6 μsec/km, how many bits should the sequence numbers be?(refer Tanenbaum)

A 3000-km-long T1 trunk is used to transmit 64-byte frames using Protocol GO back N. If thepropagation speed is 6 μsec/km, how many bits should the sequence numbers be?...

ajaysoni1924

2.6k views

ajaysoni1924 asked Mar 16, 2019

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8

Gateforum mock 2

Prince Sindhiya

461 views

Prince Sindhiya asked Jan 20, 2019

0 votes

1 answer

9

cbt-1
A Selective Repeat ARQ is using 7 bits to represent the sequence numbers.The maximum window size is __________. (ans is 64) why It is

A Selective Repeat ARQ is using 7 bits to represent the sequence numbers.The maximum window size is __________.(ans is 64)why It is

mrinmoyh

2.7k views

mrinmoyh asked Jan 17, 2019

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0 answers

10

ME_test_series
Assume in TCP client is sending segment to server. After successfully receiving segments from client, server is waiting for next segments and clients is also waiting for acknowledgment from the server and this lead to deadlock situation. Which timer is used and who ... timer, client Keep alive timer, client I am not understand how persistent timer is used and what is it used for?

Assume in TCP client is sending segment to server. After successfully receiving segments from client, server is waiting for next segments and clients is also waiting for ...

Shivam Kasat

1.2k views

Shivam Kasat asked Jan 13, 2019

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0 answers

11

MadeEasy Subject Test 2019: Computer Networks - Flow Control Methods
Here in LIST—II,i think point 1,2 is true for all the protocols. please confirm!

Here in LIST—II,i think point 1,2 is true for all the protocols.please confirm!

junaid ahmad

453 views

junaid ahmad asked Dec 22, 2018

0 votes

1 answer

12

MadeEasy Subject Test 2019: Computer Networks - Flow Control Methods
Some one please explain the concept behind this.

Some one please explain the concept behind this.

Markzuck

661 views

Markzuck asked Dec 21, 2018

0 votes

0 answers

13

MadeEasy Subject Test 2019: Computer Networks - Flow Control Methods
for Transmission delay, 2KB, K shall be 1024 and NOT 1000 as its data, right?

for Transmission delay, 2KB, K shall be 1024 and NOT 1000 as its data, right?

Markzuck

414 views

Markzuck asked Dec 17, 2018

3 votes

2 answers

14

MadeEasy Test Series: Computer Networks - Flow Control Methods
Assume 2 computers are connected via a network. The network uses Go-Back 7 sliding window protocol for maintaining flow control. It is observed that every 5th packet that has been sent through the network is lost. ... number of extra packets that has to be resent for transmitting 10 such packet through the network? With explanation.

Assume 2 computers are connected via a network. The network uses Go-Back 7 sliding window protocol for maintaining flow control. It is observed that every 5th packet that...

Subham Nagar

2.6k views

Subham Nagar asked Dec 17, 2018

2 votes

1 answer

15

MadeEasy Subject Test 2019: Computer Networks - Flow Control Methods
consider a network connecting two nodes A and B having a propagation delay of 6*10^-4 micro sec.bandwidth of network is 150 Mbps if each frame size is 5000 bytes and both uses go back n sliding window protocal, where maximum 100 frames can be sent at a time then the maximum possible data rate is ----- [ mbps]

consider a network connecting two nodes A and B having a propagation delay of 6*10^-4 micro sec.bandwidth of network is 150 Mbps if each frame size is 5000 bytes and both...

suneetha

1.7k views

suneetha asked Dec 9, 2018

1 votes

1 answer

16

TCP-Flow Control
Suppose host A is sending a large file to host B over a TCP connection. The two end hosts are 10msec apart (20msec RTT) connected by a 1Gbps link. Assume that they are using a packet size of 1000 bytes to transmit the file. Also assume for simplicity that ACK ... $W_s \gt 2000.8$(Window Size) And hence my answer came 2001. Is it correct?

Suppose host A is sending a large file to host B over a TCP connection. The two end hosts are 10msec apart (20msec RTT) connected by a 1Gbps link. Assume that they are us...

Ayush Upadhyaya

861 views

Ayush Upadhyaya asked Nov 10, 2018

2 votes

0 answers

17

MIT assignment
A geosynchronous satellite has a half-duplex channel with a transmission rate of 10 kbps and a propagation delay of 0.25 sec each way. With a data packet size of 1000 bits and a loss probability p of 0.001 ,(A) what is the expected transmission time of ... parameters are the same as part (a), what is the longest channel propagation delay for which we can still use stop-and-wait?

A geosynchronous satellite has a half-duplex channel with a transmission rate of 10 kbps and a propagation delay of 0.25 sec each way. With a data packet size of 1000 bit...

sushmita

1.0k views

sushmita asked Oct 15, 2018

0 votes

0 answers

18

flow control
A series of 1000 bit frames is to be transmitted across a data link 100 km in length at 20 Mbps. If the link has a velocity of propagation 2*10^8 m/s and BER is 2*10 ^-5, then the link utlization for i. selective repeat with send window w=10 ii. go back n with send window w =10 is a) 34%,46% b)46%,20% c)46%,34% d)20%,46%

A series of 1000 bit frames is to be transmitted across a data link 100 km in length at 20 Mbps. If the link has a velocity of propagation 2*10^8 m/s and BER is 2*10 ^-5,...

balaganesh

1.1k views

balaganesh asked Oct 6, 2018

1 votes

1 answer

19

flow control
Host A is sending data to host B over a full duplex link. A and B are using the sliding window protocol for flow control. The send and receive window sizes are 4 packets each. Data packets (sent only from A to B) are all 1500 bytes long and the transmission time ... What is the maximum achievable throughput in this communication? 3.75 10^6 Bps 7.5 10^6 Bps 10 10^6 Bps 12.75 10^6Bps

Host A is sending data to host B over a full duplex link. A and B are using the sliding window protocol for flow control. The send and receive window sizes are 4 packets...

balaganesh

1.3k views

balaganesh asked Oct 5, 2018

0 votes

1 answer

20

Flow control methods

Sambhrant Maurya

486 views

Sambhrant Maurya asked Sep 17, 2018

1 votes

3 answers

21

Ace Test Series: Computer Networks - Flow Control Methods

thor

603 views

thor asked Dec 7, 2016

2 votes

1 answer

22

MadeEasy Test Series: Computer Networks - Flow Control Methods
Assume 100 nodes are connected to a 10000 meter length of coaxial cable. Using some protocol, each node can transmit 100 frames/seconds, where the average frame length is 2500 bits. The transmission rate of the system is 108 bps. The efficiency of the protocol in percentage is _______. Answer given :: 25

Assume 100 nodes are connected to a 10000 meter length of coaxial cable. Using some protocol, each node can transmit 100 frames/seconds, where the average frame length is...

thor

2.1k views

thor asked Dec 5, 2016

4 votes

1 answer

23

TestBook Test Series: Computer Networks - Flow Control Methods
Two station A and B are connected via a point to point Link.A sends a freame to B using Go back-n protocolwith window size 7 and sequence number is of 3 bit.A sends frame one by one but B's ack for frame 3 is not reached ... ACK4,but frame 5 is lost and not received by B..so now what will be the buffer frame of current window of A?

Two station A and B are connected via a point to point Link.A sends a freame to B using Go back-n protocolwith window size 7 and sequence number is of 3 bit.A sends frame...

Aboveallplayer

829 views

Aboveallplayer asked Nov 4, 2016

2 votes

9 answers

24

MadeEasy Test Series: Computer Networks - Flow Control Methods
Station X needs to send a message consisting of 12 packets to station Y using a sliding window protocol (Window Size 4) and Go back n error control strategy. All packets are ready and immediately available for transmission. If every ... gets lost), then the number of packets that X will transmit for sending the message to Y are _____.

Station X needs to send a message consisting of 12 packets to station Y using a sliding window protocol (Window Size 4) and Go back n error control strategy. All packets ...

nvnverma18

2.3k views

nvnverma18 asked Sep 23, 2016

2 votes

3 answers

25

MadeEasy Test Series 2017: Computer Networks - Flow Control Methods
Consider a network connecting two systems located 4000 kilometers apart. The bandwidth of the network is 64 Mbps. The propagation speed of the media is 2/3 of the speed of light in vacuum. It is needed to design selective ... at nodes are negligible. Then, the minimum size in bits of the sequence number field has to be _________.

Consider a network connecting two systems located 4000 kilometers apart. The bandwidth of the network is 64 Mbps. The propagation speed of the media is 2/3 of the speed o...

Pankaj Joshi

2.1k views

Pankaj Joshi asked Sep 7, 2016

3 votes

1 answer

26

MadeEasy Test Series: Computer Networks - Flow Control Methods
consider a link of length 1000 km with 10^9 bps rate connecting a sender and receiver. assume a fixed packet length of 1250 bytes and sender always has packet to send. packet are never lost or corrupted in the connection. what is the ... window protocol? assume signal propagation is 5 microsec per km (A) 100 (B) 1000 (C) 110 (D) 1100

consider a link of length 1000 km with 10^9 bps rate connecting a sender and receiver. assume a fixed packet length of 1250 bytes and sender always has packet to send. pa...

cse7

1.5k views

cse7 asked Aug 25, 2016

1 votes

0 answers

27

MadeEasy Workbook: Computer Networks - Flow Control Methods
If the size of window is N and N # of frames are transmitted and it is supporting cumulative ACK. The Ack no. that is transmitted is ACK p.Then Calculate a)how many frames are received to the receiver b) How many frames are ... it using GOBACKN and my answer is not matching to his answer plus approach is diff. Anybody ??? help me on this.

If the size of window is N and N # of frames are transmitted and it is supporting cumulative ACK. The Ack no. that is transmitted is ACK p.ThenCalculatea)how many frames ...

mohit chawla

668 views

mohit chawla asked Jul 25, 2016

2 votes

1 answer

28

MadeEasy Test Series: Computer Networks - Flow Control Methods
Bandwidth of a link is 1000 Mbps and round trip time is given as 250 μ sec. If frame size is 500 bits, the utilization (in percentage) of channel when STOP and WAIT ARQ is used is _______.

Bandwidth of a link is 1000 Mbps and round trip time is given as 250 μ sec. If frame size is 500 bits, the utilization (in percentage) of channel when STOP and WAIT ARQ ...

Akanksha Kesarwani

1.4k views

Akanksha Kesarwani asked Feb 1, 2016

1 votes

2 answers

29

MadeEasy Test Series: Computer Networks - Flow Control Methods
Please help me to solve problem 8.

Please help me to solve problem 8.

shikharV

1.8k views

shikharV asked Nov 21, 2015

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