Recent questions tagged tcp

+2 votes

1 answer

1

Computer Networks - Transport Layer - Sequence number wrap around

asked Oct 13 in Computer Networks by shane.126 (51 points) | 42 views

+1 vote

0 answers

2

self doubt
can anyone show me a good resource to study SACK IN TCP or explain me ?

asked Oct 11 in Computer Networks by Venkat Sai Junior (823 points) | 17 views

+1 vote

1 answer

3

bitrate by Life time of segment

asked Oct 9 in Computer Networks by AnilGoudar Loyal (3.3k points) | 30 views

+1 vote

1 answer

4

Info about RFC
Can someone tell me what is RFC and how is it related to Computer Networks? How to actually extract information from it?

asked Oct 9 in Computer Networks by Parshu gate Junior (627 points) | 21 views

0 votes

2 answers

5

UGCNET-dec2004-27
Making sure that all the data packets of a message are delivered to the destination is ................ control. (A) Error (B) Loss (C) Sequence (D) Duplication

asked Sep 30 in Computer Networks by rishu_darkshadow Boss (5.5k points) | 40 views

0 votes

1 answer

6

UGCNET-dec2004-26
Error control is needed at the transport layer because of potential error occurring .............. (A) from transmission line noise (B) in router (C) from out of sequence delivery (D) from packet losses

asked Sep 30 in Computer Networks by rishu_darkshadow Boss (5.5k points) | 43 views

0 votes

2 answers

7

While TCP is a connection oriented service then why its segment follows different path.

asked Aug 23 in Computer Networks by Shubhanshu Boss (9k points) | 102 views

+3 votes

1 answer

8

Congestion Control
Q1 Let the size of the congestion window of a TCP connection be 64KB when a timeout occurs. The RTT of the connection is 50m sec and maximum segment size is 2 KB. The time taken by the TCP to get back to 64KB congestion window is _________. I am getting difficulty in finding the RTT's of the connection.

asked Aug 23 in Computer Networks by Shubhanshu Boss (9k points) | 134 views

+2 votes

2 answers

9

Fragmentation
Suppose a network:- Suppose a TCP message contains 492 B of data and TCP header is of size 20B then deliver it to IP. IP header is 20 B. Assume link A-R1 has the maximum frame size of 700 B including a frame size of 14 B, link ... B including a 12 B frame header. Then calculate the no of fragments at each link and show the format of fragments in each link.

asked Aug 19 in Computer Networks by Shubhanshu Boss (9k points) | 134 views

0 votes

1 answer

10

TCP 3 Way Handshaking
In TCP 3 way handshaking mechanism why the data is not started being transmitting from the 3rd step itself I.e. 1. A-> B / SYN FROM A 2. A<-B / SYN AND ACK FROM B 3. A-> B / ACK FROM A.

asked Aug 18 in Computer Networks by Shubhanshu Boss (9k points) | 80 views

+2 votes

0 answers

11

Computer Networks: AIMD and Slow Start

asked Aug 18 in Computer Networks by Shubhanshu Boss (9k points) | 49 views

+4 votes

2 answers

12

CN: TCP Window Size
Consider TCP congestion control. Assuming RTT as 4 seconds and segment size as 3KB, if bandwidth is 500kbps, what is the smallest window size for which there is no stalling in this case?

asked Aug 16 in Computer Networks by rahul sharma 5 Veteran (15k points) | 102 views

+1 vote

1 answer

13

Cn: Transport layer protocol
Which of the following transport layer protocols used to support email? a:) SMTP b:) TCP c::)UDP d) both b and c

asked Aug 15 in Computer Networks by rahul sharma 5 Veteran (15k points) | 92 views

+2 votes

1 answer

14

CN Slow Start Throughput
R.T.T=10 microsec. M.S.S=100 Bytes Slow start protocol used to send data.Sender needs to send data till it completes sending window size 8MSS.Find:- a. Total Time taken b. Throughput for 1st RTT c. Total Throughput d. Average Throughput

asked Aug 13 in Computer Networks by rahul sharma 5 Veteran (15k points) | 106 views

+1 vote

0 answers

15

Computer Networks
In TCP checksum is mandatory but in UDP checksum is optional. Why ?

asked Aug 6 in Computer Networks by Ashish Roy (303 points) | 64 views

+1 vote

2 answers

16

#GATE2018 #GATE #COMPUTERSCIENCE #GATECSE

asked Jun 29 in Computer Networks by popo040 (75 points) | 176 views

0 votes

1 answer

17

Computer Network
I know I shouldn't be asking this but still: Window size is 16 bits in TCP so maximum possible value is 2^16=65535 bytes. Why bytes not bits?

asked Jun 12 in Computer Networks by Bad_Doctor (201 points) | 87 views

0 votes

1 answer

18

TCP header
When Checksum is calculated in TCP, why IP header is also included? since it is included why it is only used in computation and not in transmission.

asked Jun 8 in Computer Networks by Bad_Doctor (201 points) | 87 views

0 votes

1 answer

19

TCP/IP by forozen
1.RTT Deviation =$RTT_{D}$=(1-$RTT_{D\beta }$) old $RTT_{D}$ + $RTT_{D\beta }$ * | ($RTT_{S}$ -$RTT_{M}$)| 2.RTT Deviation =$RTT_{D}$=(1-$RTT_{D\beta }$) old $RTT_{D}$ + $RTT_{D\beta }$ * | ($RTT_{M}$)| Which of the following is right formula for calculation and in what conditions ?I found bot formula right in sone numericals?

asked May 8 in Computer Networks by Kuldeep Pal Junior (661 points) | 339 views

+3 votes

4 answers

20

Congestion avoidance in TCP
During Congestion avoidance(Additive Increase) in tcp when 3 duplicate ACKs arrived then during that arrival phase by which algorithm did the sender window adopt increment procedure? a) Sender window uses additive increase b)Sender window uses slow start which option is correct?

asked Feb 19 in Computer Networks by Shubham Sharma 2 Boss (5.2k points) | 247 views

0 votes

0 answers

21

pre ladder quiz
Consider the TCP is using slow-start congestion control.After having 10th consecutive transmission failed due to Timeout,the current threshold value is set to 7KB .what was the congestion window size at the time of starting of these transmissions ? assume MSS= 1kb

asked Feb 15 in Computer Networks by anonymous | 153 views

+6 votes

4 answers

22

GATE2017-1-14
Consider a TCP client and a TCP server running on two different machines. After completing data transfer, the TCP client calls close to terminate the connection and a FIN segment is sent to the TCP server. Server-side TCP responds by sending an ACK, which is received ... FIN from the server-side TCP? (A) LAST-ACK (B) TIME-WAIT (C) FIN-WAIT-1 (D) FIN-WAIT-2

asked Feb 14 in Computer Networks by yg92 Loyal (3.2k points) | 1.4k views

0 votes

1 answer

23

Computer network MSS and MTU
Are these definations of MSS and MTU correct?? MSS is maximum payload of TCP segment. TCP segment (MSS + TCP header) For IPpacket, it consists of (MSS + TCP header + IP header) And payload of IP packet means (TCPheader + ... fragmentation always done at router?? Can it be done by source?? I am really confused about these terms. Plz verify.

asked Feb 8 in Computer Networks by Rahul Jain25 Veteran (12.2k points) | 869 views

+1 vote

2 answers

24

TCP and UDP checksum
Consider a scenario where UDP receiver computes the Internet checksum for the received UDP segment and finds that it matches the value carried in the checksum field. Which of the statement below is true with respect to the above scenario? Receiver ... given is D but I feel it should be B because Tcp checksum is calculated on data and header both.

asked Feb 8 in Computer Networks by reena_kandari Boss (5.3k points) | 192 views

0 votes

2 answers

25

Networking
On TCP connection, consider FIN, SYN packets will take 1 byte and ACK packets will take 0 bytes. Assume client and server are working on this connection. Client and server selected random numbers for sequence numbers 100 and 500 respectively. After connection is established, ... = 299 (C) SEQ NUM = 500 and ACK NUM = 300 (D) SEQ NUM = 501 and ACK NUM = 301

asked Feb 2 in Computer Networks by Shradha Junior (653 points) | 123 views

+1 vote

0 answers

26

#Networks #AIMD #TCP #CongessionControl

asked Jan 28 in Computer Networks by lifeisshubh (259 points) | 57 views

+1 vote

0 answers

27

Query
I am having problems understanding these inequalities with regard to TCP connection. Receiving side LastByteRcvd - NextByteRead <= MaxRcvBuffer AdvertisedWindow = MaxRcvBuffer - (LastByteRcvd - NextByteRead) Sending side LastByteSent -LastByteAcked ... ) + y > MaxSendBuffer Please either explain yourself or provide some useful link. Thank you.

asked Jan 25 in Computer Networks by itachi (93 points) | 46 views

+2 votes

0 answers

28

Transport Layer
Solution for Q1 ,Q2?

asked Jan 25 in Computer Networks by Shubham Sharma 2 Boss (5.2k points) | 206 views

0 votes

1 answer

29

tcp frame
Suppose a server transmits one frame of a video every second, and the client starts playing the video at one frame per second as soon as the first frame arrives. Suppose the first ten frames arrive at times 0, 1.2, 1.99, 4.17, 4.01, 5.03, 8.05, 7.50, 8.90, 8.99, all in seconds. Which frames reach the client too late for playout? (A) 7 (B) 3 (C) 6 (D) 5

asked Jan 25 in Computer Networks by indrajeet Active (1.9k points) | 69 views

+2 votes

1 answer

30

TCP Sequence Number [GateBook]

asked Jan 24 in Computer Networks by biranchi Loyal (2.5k points) | 143 views

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