Dark Mode

Recent questions tagged sliding-window

1 vote

1 answer

1

MADE EASY test series | Computer Networks
Can someone please suggest weather to go for 20.5 or 21 in these kind of problems in GATE? As logically 21 is correct, but mathematically 20.5 is correct. Both the answers can be reasoned correct and wrong, feels like “Umpire’s call” in DRS, cricket.

Souvik33 asked in Computer Networks Jan 3

133 views

2 votes

1 answer

2

Solution is 2 or 3?
Should the solution for the above question be 2 or 3?

h4kr asked in Computer Networks Dec 9, 2022

by h4kr

151 views

0 votes

1 answer

3

Sliding window, Go-Back-N protocol, All ack lost case
I understood that receiver will correctly discard the frames in GBN all ack lost case. But its given that its positive ack and hence receiver wont send ack for discarded frames.Wont the sender be sending the same frames again and again ... timeout as receiver will never send ack again? So how will the sender slide the window to the next frames?

fred20978 asked in Computer Networks Nov 8, 2022

268 views

2 votes

2 answers

4

h4kr asked in Computer Networks Nov 2, 2022

by h4kr

116 views

0 votes

0 answers

5

Computer Networks
In the given solution , while calculating transmission time why 8 is not multiplied i.e. Length = 2000Byte = 2000 * 8 bits formula is not used.

Overflow04 asked in Computer Networks Aug 7, 2022

177 views

2 votes

0 answers

6

Testseries-doubt
“An SR sender’s window base cannot a have lower sequence number than the receiver window base” can some one explain this statement ? Why it is false

Kabir5454 asked in Computer Networks Jul 13, 2022

182 views

0 votes

2 answers

7

Self doubt CN
In the connection termination phase, suppose the FIN segment from the client-side contains data ranging from sequence no 100 to 200, So will the ACK no from the server start from 201 or 202? Will the FIN flag consume 1 extra sequence number at the end, ... context of my question, will that sequence number be 99, before the beginning of the data segment or 201, after the data segment

tusharb asked in Computer Networks Jan 24, 2022

549 views

0 votes

1 answer

8

slow start phase self doubt
when no of RTT is asked , i am confused when will start from 1 AND when will start from 2 rest part i known folow until thresold size and then increse with given MSS LET SUPPOSE THRESOLD 20 FOR EX ::: 1 2 4 8 16 20 22 24 26 OR 2 4 8 16 20 22 24 26 in ex 1 no of rtt is 9 while in ex 2 no of rtt is 8 can anyone tell me when we will start 1 and when we will start with 2

jugnu1337 asked in Computer Networks Dec 28, 2021

190 views

10 votes

2 answers

9

GATE CSE 2021 Set 1 | Question: 49
Consider the sliding window flow-control protocol operating between a sender and a receiver over a full-duplex error-free link. Assume the following: The time taken for processing the data frame by the receiver is negligible. The time taken for ... number of frames, (rounded to the nearest integer) needed to achieve a link utilization of $50\%$ is_____________.

Arjun asked in Computer Networks Feb 18, 2021

by Arjun

7.1k views

3 votes

2 answers

10

NIELIT 2017 DEC Scientific Assistant A - Section B: 43
When we use slow-start algorithm, the size of the congestion window increases _______ until it reaches a threshold. Additively Multiplicatively Exponentially None of the options

Lakshman Patel RJIT asked in Computer Networks Mar 31, 2020

by Lakshman Patel RJIT

1.5k views

1 vote

10 answers

11

UGC NET CSE | January 2017 | Part 3 | Question: 26
Station $A$ uses $32$ byte packets t transmit messages to station $B$ using sliding window protocol. The round trip delay between $A$ and $B$ is $40$ milliseconds and the bottleneck bandwidth on the path between $A$ and $B$ is $64$ kbps. The optimal window size of $A$ is $20$ $10$ $30$ $40$

go_editor asked in Computer Networks Mar 24, 2020

1.9k views

2 votes

0 answers

12

Self doubt
In go back n arq, the reciever window size is 1 and the sender window size is let's suppose 3.Now if the sender sends the frames with sequence numbers in order 0,1,2 and the reciever sends cumulative acknowledgement with number 3 and now expects a frame ... order and sender must keep on time out and sending the frames again.plz explain how will this be resolved or am I missing something?

hitesh159 asked in Computer Networks Mar 23, 2019

435 views

1 vote

2 answers

13

Andrew S. Tanenbaum Edition 5th Exercise 3 Question 33 (Page No. 254)
Compute the fraction of the bandwidth that is wasted on overhead (headers and retransmissions) for protocol selective repeat on a heavily loaded 50-kbps satellite channel with data frames consisting of 40 header and 3960 data bits. ... frames is 1%, and the error rate for NAK frames is negligible. The sequence numbers are 8 bits.

ajaysoni1924 asked in Computer Networks Mar 16, 2019

by ajaysoni1924

658 views

2 votes

2 answers

14

Andrew S. Tanenbaum Edition 5th Exercise 3 Question 32 (Page No. 254)
Frames of 1000 bits are sent over a 1-Mbps channel using a geostationary satellite whose propagation time from the earth is 270 msec. Acknowledgements are always piggybacked onto data frames. The headers are very short. Three-bit ... achievable channel utilization for (a) Stop-and-wait? (b) go back n? (c) selective repeat?

ajaysoni1924 asked in Computer Networks Mar 16, 2019

by ajaysoni1924

13.0k views

1 vote

1 answer

15

Andrew S. Tanenbaum Edition 5th Exercise 3 Question 30 (Page No. 253)
Consider the operation of protocol 6 ( Selective repeat Protocol) over a 1-Mbps perfect (i.e., error-free) line. The maximum frame size is 1000 bits. New packets are generated 1 second apart. ... acknowledgement timer were eliminated, unnecessary timeouts would occur. How many times would the average message be transmitted?

ajaysoni1924 asked in Computer Networks Mar 16, 2019

by ajaysoni1924

738 views

2 votes

1 answer

16

Andrew S. Tanenbaum Edition 5th Exercise 3 Question 27 (Page No. 253)
(a) The distance from earth to a distant planet is approximately 9 1010 m. What is the channel utilization if a stop-and-wait protocol is used for frame transmission on a 64 Mbps point-to-point link? Assume ... size will the link utilization be 100%? You may ignore the protocol processing times at the sender and the receiver.

ajaysoni1924 asked in Computer Networks Mar 16, 2019

by ajaysoni1924

1.4k views

1 vote

1 answer

17

Andrew S. Tanenbaum Edition 5th Exercise 3 Question 23 (Page No. 253)
Imagine a sliding window protocol using so many bits for sequence numbers that wraparound never occurs. What relations must hold among the four window edges and the window size, which is constant and the same for both the sender and the receiver?

ajaysoni1924 asked in Computer Networks Mar 16, 2019

by ajaysoni1924

698 views

Page:

1
2
3
4
5
6
7
next »

Recent questions tagged sliding-window