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Recent questions tagged congestion-control
9
votes
1
answer
1
GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 39
Consider a $\text{TCP}$ flow sending three segments, namely $1,2,$ and $3.$ Due to congestion, the $\text{TCP}$ flow experiences exactly two losses. Only segments can be lost; acknowledgments are not lost. Segments $1$ and $3$ are ... for all packets successfully? $\text{3 RTTs}$ $\text{5 RTTs}$ $\text{6 RTTs}$ $\text{8 RTTs}$
GO Classes
asked
in
Computer Networks
Jan 21
by
GO Classes
661
views
goclasses2024-mockgate-12
goclasses
computer-networks
congestion-control
2-marks
0
votes
0
answers
2
#Applied Course
Assume the scenario of AIMD where the size of the congestion window of a TCP connection is 40KB when a timeout occurs, the initial threshold is 38 KB. The MSS is 2KB. At which transmission after a timeout the sender window reaches 20 KB? The given ... line At which transmission after a timeout the sender window reaches 20 KB? we need to count from starting or after timeout?
Dknights
asked
in
Computer Networks
Dec 28, 2023
by
Dknights
155
views
congestion-control
computer-networks
0
votes
1
answer
3
TCP Congestion Control | Threshold value | cwnd | ssthres
Consider the following Statements: Statement I. If there is no congestion, initially, the ssthres (slow start threshold) is set as high as the advertised window size of the receiver Statement II. The (ssthres)new = (window size ... are correct. None of statement I and II is correct Only statement II is correct. Only statement I is correct.
Souvik33
asked
in
Computer Networks
Dec 14, 2022
by
Souvik33
888
views
congestion-control
tcp
computer-networks
0
votes
1
answer
4
Computer Networks
atajan
asked
in
Computer Networks
Dec 1, 2022
by
atajan
308
views
computer-networks
tcp
congestion-control
4
votes
2
answers
5
Applied Mock Test 2
In TCP, MSS is 8B. If during the 6th RTT the network is congested and timeout occurs, by using the congestion algorithm, then the threshold value is _________(in Bytes). (assume initial congestion window size for the first transmission is 1 MSS)
LRU
asked
in
Computer Networks
Dec 11, 2021
by
LRU
1.5k
views
test-series
computer-networks
congestion-control
transport-layer
3
votes
1
answer
6
Applied Test Series
Suppose TCP uses congestion control without slow start.The first transmission start with 1 MSS, Assuming cwnd increases by 3 MSS every time a batch of ACKs is received and assuming approximately constant round-?trip times, the next window after timeout will ... timeout occurs at the sixth transmission, how many total round trip time requires to reach the window size of 20 MSS.
LRU
asked
in
Computer Networks
Oct 8, 2021
by
LRU
1.6k
views
test-series
computer-networks
congestion-control
tcp
2
votes
2
answers
7
Applied Test Series
In the TCP connection, the maximum segment size used by the connection is 1000 bytes. What is the congestion window(in bytes) after the 4th transmission and receives acks for all of them? Assume the connection uses only slow-start ?
LRU
asked
in
Computer Networks
Oct 8, 2021
by
LRU
1.0k
views
test-series
computer-networks
congestion-control
tcp
2
votes
1
answer
8
Applied Test Series
Suppose TCP uses AIMD for its congestion control without slow start. Assuming cwnd increases by 2 MSS every time a batch of ACKs is received and assuming approximately constant round-trip times, how long in round trip time does it take for cwnd to increase from 4 MSS to 12 MSS (assuming no loss events)?
LRU
asked
in
Computer Networks
Oct 8, 2021
by
LRU
1.5k
views
test-series
computer-networks
tcp
congestion-control
2
votes
1
answer
9
Applied Test Series
Consider the size of the congestion window of a TCP connection be 40 KB when a timeout occurs. The round trip time of the connection is 50 msec and the maximum segment size used is 2 KB. How much time it will be required(in milli sec) to reach the congestion window of 30 KB?
LRU
asked
in
Computer Networks
Oct 4, 2021
by
LRU
542
views
computer-networks
congestion-control
tcp
test-series
3
votes
1
answer
10
Applied Test Series
On any given Sunday, Sam initiates a connection with his girlfriend Alice in order to plan out what movie they're going to watch on Tuesdays with Morrie. This Sunday, immediately after Sam initiates the connection, Alice decides to send him a 60 KB ... congestion window of 1. Neglect queuing and processing delays at both the sender and receiver, and assume there are no losses.
LRU
asked
in
Computer Networks
Oct 1, 2021
by
LRU
633
views
computer-networks
tcp
congestion-control
test-series
0
votes
1
answer
11
Applied Test Series
Consider the effect of using additive increase multiplicative decrease(AIMD) on a line with propagation delay of 10ms.The receive window is 24KB and the maximum segment size is 2KB. How long does it take to completely send full window size segment in ms initial threshold of 20KB?
LRU
asked
in
Computer Networks
Sep 30, 2021
by
LRU
577
views
computer-networks
tcp
congestion-control
test-series
0
votes
1
answer
12
Applied Test Series
Consider the effect of using slow start on a line with 12 msec round trip time. The size of the congestion window is set to 40 KB. The sender side threshold is set to 20 KB. After 7th transmission a time-out occurs, after timeout the time taken to send the first full window of 20 KB is (in msec). ? [ Assume window size at the start of the slow start phase is 2 KB, MSS=2KB]
LRU
asked
in
Computer Networks
Sep 30, 2021
by
LRU
485
views
computer-networks
tcp
congestion-control
test-series
1
vote
1
answer
13
NIELIT Scientific Assistant A 2020 November: 87
Why does congestion occur? Because the routers and switches have tables Because the routers and switches have queues Because the routers and switches have cross-points None of the options
gatecse
asked
in
Computer Networks
Dec 9, 2020
by
gatecse
652
views
nielit-sta-2020
computer-networks
congestion-control
3
votes
1
answer
14
NIELIT 2017 DEC Scientific Assistant A - Section B: 11
Closed - Loop control mechanism try to : Remove congestion after it occurs Remove congestion after sometime Prevent congestion before it occurs Prevent congestion before sending packets
Lakshman Bhaiya
asked
in
Computer Networks
Mar 31, 2020
by
Lakshman Bhaiya
2.4k
views
nielit2017dec-assistanta
computer-networks
congestion-control
3
votes
2
answers
15
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 Bhaiya
asked
in
Computer Networks
Mar 31, 2020
by
Lakshman Bhaiya
2.1k
views
nielit2017dec-assistanta
computer-networks
congestion-control
sliding-window
1
vote
3
answers
16
Kurose and Ross Edition 6 Exercise 3 Question R18 (Page No 288)
True or false? Consider congestion control in TCP. When the timer expires at the sender, the value of ssthresh is set to one half of its previous value.
ajaysoni1924
asked
in
Computer Networks
Apr 18, 2019
by
ajaysoni1924
1.7k
views
computer-networks
kurose-and-ross
transport-layer
congestion-control
descriptive
tcp
1
vote
2
answers
17
Kurose and Ross Edition 6 Exercise 3 Question R17 (Page No 287)
Suppose two TCP connections are present over some bottleneck link of rate R bps. Both connections have a huge file to send (in the same direction over the bottleneck link). The transmissions of the files start at the same time. What transmission rate would TCP like to give to each of the connections?
ajaysoni1924
asked
in
Computer Networks
Apr 18, 2019
by
ajaysoni1924
1.7k
views
computer-networks
kurose-and-ross
transport-layer
tcp
congestion-control
descriptive
2
votes
2
answers
18
Andrew S. Tanenbaum Edition 5th Exercise 6 Question 31 (Page No. 609)
Suppose that the TCP congestion window is set to 18 KB and a timeout occurs. How big will the window be if the next four transmission bursts are all successful? Assume that the maximum segment size is 1 KB.
ajaysoni1924
asked
in
Computer Networks
Mar 18, 2019
by
ajaysoni1924
968
views
computer-networks
transport-layer
tanenbaum
congestion-control
1
vote
2
answers
19
Andrew S. Tanenbaum Edition 5th Exercise 6 Question 30 (Page No. 609)
Consider the effect of using slow start on a line with a 10-msec round-trip time and no congestion. The receive window is 24 KB and the maximum segment size is 2 KB. How long does it take before the first full window can be sent?
ajaysoni1924
asked
in
Computer Networks
Mar 18, 2019
by
ajaysoni1924
748
views
computer-networks
tanenbaum
transport-layer
tcp
congestion-control
0
votes
0
answers
20
Andrew S. Tanenbaum Edition 5th Exercise 6 Question 14 (Page No. 607)
Some other policies for fairness in congestion control are Additive Increase Additive Decrease (AIAD), Multiplicative Increase Additive Decrease (MIAD), and Multiplicative Increase Multiplicative Decrease (MIMD). Discuss these three policies in terms of convergence and stability.
ajaysoni1924
asked
in
Computer Networks
Mar 18, 2019
by
ajaysoni1924
758
views
computer-networks
tanenbaum
transport-layer
descriptive
congestion-control
0
votes
0
answers
21
Andrew S. Tanenbaum Edition 5th Exercise 6 Question 12 (Page No. 607)
In Figure 6-20, suppose a new flow E is added that takes a path from R1 to R2 to R6. How does the max-min bandwidth allocation change for the five flows?
ajaysoni1924
asked
in
Computer Networks
Mar 18, 2019
by
ajaysoni1924
895
views
computer-networks
tanenbaum
transport-layer
congestion-control
0
votes
0
answers
22
huge doubt
which value do we have to return when the question is like this ..what is the window size at the end of nth transmission? do we have to return window size at nth transmission or window size of (n+1)th transmission ...there always comes a single value gap ... to be true in test series and sometimes false? pls clarify this ..don't want to loose marks if this comes in actual gate exam.
Ashwani Yadav
asked
in
Computer Networks
Jan 31, 2019
by
Ashwani Yadav
339
views
congestion-control
2
votes
2
answers
23
Made Easy Subject Test 2019: Computer Networks - Congestion Control
I thought 2600 cause after 34, it takes one RTT and size becomes 36 before sending the 14th segment(i.e., segment with window size = 36KB). Questions based on this are confusing. Please clarify.
Naveen Muralidhar
asked
in
Computer Networks
Jan 20, 2019
by
Naveen Muralidhar
656
views
computer-networks
congestion-control
made-easy-test-series
1
vote
1
answer
24
Ace Test Series 2019: Computer Networks - Congestion Control
Na462
asked
in
Computer Networks
Jan 19, 2019
by
Na462
630
views
computer-networks
tcp
congestion-control
ace-test-series
5
votes
0
answers
25
MadeEasy Test Series 2019: Computer Networks - Congestion Control
Consider a TCP connection using the multiplicative additive congestion control algorithm where the window size is 1 MSS and the threshold is 32 MSS. At the $8^{th}$ transmission timeout occurs and enters in the congestion detection ... transmission. So we have to take the window size after the 12 RTTs right and not at 12th RTT?
MiNiPanda
asked
in
Computer Networks
Jan 15, 2019
by
MiNiPanda
1.8k
views
computer-networks
congestion-control
made-easy-test-series
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