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Recent questions tagged tcp

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self doubt
Does the window size parameter in TCP header means segment size?

JAINchiNMay asked in Computer Networks Sep 18

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1 answer

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Computer Networks
I am slightly confused in 40 Gbps. When to use 2^30 and when to use 10^3 in conversion.

GateOverflow04 asked in Computer Networks Sep 11

by GateOverflow04

140 views

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0 answers

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Best Open Video Playlist for Concept of layering: TCP/IP Protocol Stacks Topic | Computer Networks
Please list out the best free available video playlist for Concept of layering: TCP/IP Protocol Stacks from Computer Networks as an answer here (only one playlist per answer). We'll then select the best ... are more likely to be selected as best. For the full list of selected videos please see here

makhdoom ghaya asked in Study Resources Aug 23

by makhdoom ghaya

15 views

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0 answers

4

How does non persistent parallel HTTP connections work?
You don't need to read the whole question for answering. Just tell me how non persistent parallel connections work with a figure. The figure that is found in internet for it is the one that is exactly below this but I don't ... different. ( I think I get this now. It is just calculating response time for n objects rather than total RTTs)

shivajikobardan asked in Computer Networks May 31

by shivajikobardan

231 views

0 votes

3 answers

5

GATE CSE 2022 | Question: 50
Consider the data transfer using $\text{TCP}$ over a $1 \; \text{Gbps}$ link. Assuming that the maximum segment lifetime $\text{(MSL)}$ is set to $60 \; \text{seconds},$ the minimum number of bits required for the sequence number field of the $\text{TCP}$ header, to prevent the sequence number space from wrapping around during the $\text{MSL}$ is ________________.

Arjun asked in Computer Networks Feb 15

by Arjun

1.3k views

0 votes

2 answers

6

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

378 views

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2 answers

7

Self doubt CN
Can the header length of IPV4 change at the router? If yes, then why?

tusharb asked in Computer Networks Jan 22

237 views

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1 answer

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non-persistent HTTP - computer networks - test series - made easy
How many messages will it take to receive 3 images from a server using non-persistent HTTP? The provided solution says that it will take 18 messages. But I'm getting 16 messages according to my following method: In total there will ... 1 file. So, in total for 4 such iterations, it'll take 16 messages. What is wrong with my method?

atulcse asked in Computer Networks Nov 14, 2021

287 views

1 vote

1 answer

9

Applied Test Series
What will be the length of maximum burst in sec where the capacity of the router is 10MB. The maximum output rate of the router is 20 MBPS and the token rate is 12 MBPS.

LRU asked in Computer Networks Oct 10, 2021

by LRU

408 views

3 votes

1 answer

10

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

953 views

2 votes

2 answers

11

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

307 views

2 votes

1 answer

12

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

467 views

2 votes

1 answer

13

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

233 views

3 votes

1 answer

14

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

260 views

0 votes

1 answer

15

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

255 views

0 votes

1 answer

16

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

195 views

6 votes

5 answers

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GATE CSE 2021 Set 2 | Question: 7
Consider the three-way handshake mechanism followed during $\text{TCP}$ connection establishment between hosts $P$ and $Q$. Let $X$ and $Y$ be two random $32$-bit starting sequence numbers chosen by $P$ and $Q$ respectively. Suppose $P$ sends a $\text{TCP}$ connection request ... $=Y$, $\text{ACK}$ bit $=1$, $\text{ACK}$ number $=X$, $\text{FIN}$ bit $=0$

Arjun asked in Computer Networks Feb 18, 2021

by Arjun

3.8k views

6 votes

3 answers

18

GATE CSE 2021 Set 1 | Question: 44
A $\text{TCP}$ server application is programmed to listen on port number $P$ on host $S$. A $\text{TCP}$ client is connected to the $\text{TCP}$ server over the network. Consider that while the $\text{TCP}$ connection was active, the ... receive a $\text{RST}$ segment If the client sends a packet after the server reboot, it will receive a $\text{FIN}$ segment

Arjun asked in Computer Networks Feb 18, 2021

by Arjun

5.5k views

10 votes

4 answers

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GATE CSE 2021 Set 1 | Question: 45
Consider two hosts $P$ and $Q$ connected through a router $R$. The maximum transfer unit $\text{(MTU)}$ value of the link between $P$ and $R$ is $1500$ bytes, and between $R$ and $Q$ is $820$ bytes. A $\text{TCP}$ segment ... to resend the whole $\text{TCP}$ segment. $\text{TCP}$ destination port can be determined by analysing $\textit{only}$ the second fragment.

Arjun asked in Computer Networks Feb 18, 2021

by Arjun

4.3k views

1 vote

3 answers

20

NIELIT 2016 MAR Scientist B - Section C: 53
In context of TCP/IP computer network models, which of the following is FALSE? Besides span of geographical area, the other major difference between LAN and WAN is that the later uses switching element. A repeater is used just to forward ... to another one. IP layer is connected oriented layer in TCP/IP. A gateway is used to connect incompatible networks.

Lakshman Patel RJIT asked in Computer Networks Mar 31, 2020

by Lakshman Patel RJIT

1.1k views

2 votes

5 answers

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UGC NET CSE | January 2017 | Part 2 | Question: 28
A packet whose destination is outside the local $TCP/IP$ network segment is sent to ________. File server $DNS$ server $DHCP$ server Default gateway

go_editor asked in Computer Networks Mar 24, 2020

483 views

11 votes

4 answers

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GATE CSE 2020 | Question: 55
Consider a $\textsf{TCP}$ connection between a client and a server with the following specifications; the round trip time is $6$ ms, the size of the receiver advertised window is $50$ KB, slow-start threshold at the client is $32$ KB, and the ... the size of the congestion window (in $\text{KB}$) at time $t+60$ ms after all acknowledgements are processed is _______

Arjun asked in Computer Networks Feb 12, 2020

by Arjun

8.9k views

2 votes

4 answers

23

ISRO2020-54
Checksum field in TCP header is ones complement of sum of header and data in bytes ones complement of sum of header, data and pseudo header in $16$ bit words dropped from $\text{IPv6}$ header format better than $\text{md5}$ or $\text{sh1}$ methods

Satbir asked in Computer Networks Jan 13, 2020

by Satbir

1.8k views

5 votes

3 answers

24

ISRO2020-53
The persist timer is used in TCP to To detect crashes from the other end of the connection To enable retransmission To avoid deadlock condition To timeout FIN_Wait$1$ condition

Satbir asked in Computer Networks Jan 13, 2020

by Satbir

1.8k views

1 vote

3 answers

25

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

1.1k views

1 vote

2 answers

26

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

886 views

1 vote

1 answer

27

Kurose and Ross Edition 6 Exercise 3 Question R15 (Page No 287)
Suppose Host A sends two TCP segments back to back to Host B over a TCP connection. The first segment has sequence number 90; the second has sequence number 110. How much data is in the first segment? Suppose that the ... segment arrives at B. In the acknowledgment that Host B sends to Host A, what will be the acknowledgment number?

ajaysoni1924 asked in Computer Networks Apr 18, 2019

by ajaysoni1924

8.6k views

1 vote

1 answer

28

Kurose and Ross Edition 6 Exercise 3 Question R14 (Page No 287)
True or false? Host A is sending Host B a large file over a TCP connection. Assume Host B has no data to send Host A. Host B will not send acknowledgments to Host A because Host B cannot piggyback the acknowledgments ... 4 bytes of data over a TCP connection to Host B. In this same segment the acknowledgment number is necessarily 42.

ajaysoni1924 asked in Computer Networks Apr 18, 2019

by ajaysoni1924

3.0k views

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Recent questions tagged tcp