Recent questions tagged tcp

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1

CN-TCP
When a TCP segment arrives at a host, in order to direct it to the appropriate socket, the operating system's network stack uses which of the following? (a)Transport protocol number (b)Destination IP Address (c)Source port number (d)Destination port ... a,b and d are needed. Why source port number is needed? Document Ref: https://gateoverflow.in/?qa=blob&qa_blobid=8025344419025703520

asked Nov 10 in Computer Networks by Ayush Upadhyaya Boss (15.9k points) | 65 views

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2

Self doubt
What does this 2nd points means wrt TCP window. We need not send complete window everytime..but we send complete window data once at a time. Right? Is it something related to PUSH flag

asked Nov 3 in Computer Networks by jatin khachane 1 Active (1.7k points) | 23 views

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3

#TCP_timers #tranport layer #computer network #RTO

asked Oct 22 in Computer Networks by Kinjalkkt (97 points) | 50 views

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4

TestBook Series

asked Oct 17 in Computer Networks by monty Active (1k points) | 64 views

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1 answer

5

Congestion control
Consider the effect of using slow start on a line with 10 msec round trip time. The receiver window and the size of congestion window are set to 38 KB and 36 KB respectively. Sender side threshold is set to 18 KB. After 8 transmission a timeout occurs, after time out, the time taken to send first full window of 18 KB is ________ (in msec).

asked Oct 16 in Computer Networks by Shivangi Parashar 2 (251 points) | 69 views

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1 answer

6

Transport layer
For a network which has maximum packet size is 256 bytes . lifetime of a packet is 20 sec and 8 bit sequence number . Find maximum data rate per connection

asked Oct 11 in Computer Networks by Jaggi (81 points) | 78 views

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7

Testbook Chapterwise test
Which of the following is TRUE 1. A SYN segment can carry data,consumes no sequence number 2. A SYN+ACK segment can't carry data,but does consume one sequence number 3. An ACK segment , if carrying no data doesn't consume a sequence number

asked Oct 5 in Computer Networks by jatin khachane 1 Active (1.7k points) | 59 views

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1 answer

8

Doubt
UDP does not insert sequence numbers. The packets are expected to arrive as a continuous stream or they are dropped. What is the meaning of this line?(does it mean UDP discard out of order packets?)

asked Sep 24 in Computer Networks by soumayan bandhu Junior (769 points) | 44 views

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9

TCP 3-way-handshake

asked Sep 23 in Computer Networks by Sambhrant Maurya Junior (899 points) | 27 views

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10

sample question
If TCP round trip time is currently 20 ms and ACK comes in after 30 ms then what is the timeout period for next transmission . Use α=0.9 and β=2 I know that α is smoothening factor. what is meant by β?

asked Sep 21 in Computer Networks by vk_9_1_9 (33 points) | 24 views

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11

TCP Protocol

asked Sep 20 in Computer Networks by Na462 Loyal (6.9k points) | 51 views

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12

TCP,UDP doubt
Is packets come to destination in order for both TCP and UDP?

asked Sep 15 in Computer Networks by soumayan bandhu Junior (769 points) | 27 views

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13

TCP/IP
The intermediate routers between source and destination do not need the following info in the IP header; a)Protocol b)Identification number c)Source IP d)IP version e)None of these

asked Sep 13 in Computer Networks by Sambhrant Maurya Junior (899 points) | 53 views

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14

TCP/IP
What is the minimum and maximum number of packets required to be exchanged for connection establishment, data transfer and connection termination in a TCP 3 way handshake?

asked Sep 12 in Computer Networks by Sambhrant Maurya Junior (899 points) | 56 views

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15

TestBook TCP
In a TCP connection, the initial sequence number at the client site is 1846. The client opens the connection, sends only one segment carrying 1200 bytes of data, and closes the connection. What is the value of the sequence number in SYN, DATA and FIN segment sent by the client? 1200, 3046, 4246 1846, 1200, 3046 1200, 1846, 3046 1846, 3046, 3046

asked Sep 9 in Computer Networks by Mk Utkarsh Boss (23.6k points) | 60 views

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1 answer

16

Self Doubt
What is Port number for TCP,UDP,IGMP,ICMP ? this might be silly question but still wants some little discussion.

asked Sep 1 in Computer Networks by Nikhil Patil (497 points) | 41 views

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17

Kurose and Ross Chapter 4th Network Layer Problem 16

asked Aug 31 in Computer Networks by Phantom5 (53 points) | 47 views

+1 vote

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18

CN_METest_TCP
I have a doubt here. Case 1: If we don't use time-stamp option in tcp, then the maximum segments that I can send in 1 TCP session is $2^{32}$ Since each segment size is 1460Bytes, maximum data that can be sent is $1460*2^{32}$ Bytes (A) ... then sequence number wrap around won't be a problem.Then in this case, what file size should we assume? is my analysis correct in both cases?

asked Aug 22 in Computer Networks by Ayush Upadhyaya Boss (15.9k points) | 86 views

+1 vote

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19

CN_METest
I have a doubt here. When timeout occurs, the congestion windows size is 18MSS.and Till now total RTT before this timeout were 6. Now, my threshold will be set to 9MSS and congestion window will start from 1 MSS.So, now when I send 1MSS window and receive it's ack and then my window size changes to 2MSS, will this RTT be counted as 7th RTT or the 8th RTT?

asked Aug 22 in Computer Networks by Ayush Upadhyaya Boss (15.9k points) | 85 views

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20

I'm getting trouble to solve this Computer Network Numerical #Congestion #Packetization

asked Aug 21 in Computer Networks by Phantom5 (53 points) | 41 views

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1 answer

21

Computer network
we know that router is a 3 layer device (upto network layer)....then how it runs RIP,OSPF protocol for routing protocol ????i mean routing protocol runs on transport layer(because they uses UDP/TCP).....how it is possible??

asked Aug 14 in Computer Networks by Ravi prakash pandey Junior (779 points) | 42 views

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1 answer

22

TCP acknowledgement number
An ACK number of $1000$ in TCP always means that $999$ bytes have been successfully received $1000$ bytes have been successfully received $1001$ bytes have been successfully received None of the above

asked Jun 18 in Computer Networks by bts (149 points) | 122 views

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1 answer

23

Self doubt - TCP
True or False An acknowledgement by TCP sender means that data is delivered to the application process.

asked Jun 16 in Computer Networks by Harsh Kumar Junior (803 points) | 50 views

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24

TCP types (importance for GATE)
Should I really remember the differences between (or may really care about) the Tahoe TCP and Reno TCP for GATE ?

asked Jun 15 in Computer Networks by Harsh Kumar Junior (803 points) | 52 views

+2 votes

1 answer

25

TCP - Stanford Lectures
In one of the quizes, they asked the following question : "A server typically listens for TCP connections on a particular port (e.g. 80 for HTTP or 22 for SSH). Which fields can the server use to distinguish packets for a particular ... address from the packet received from the client... (After all, this destination IP address corresponds to the Server itself !).

asked Jun 13 in Computer Networks by Harsh Kumar Junior (803 points) | 72 views

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2 answers

26

tcp congestion control
i have a self doubt that till now i solve the TCP question where the sender has $1\hspace{0.1cm}mss$ at starting so during time out generally reduced the senders window size to $1 \hspace{0.1cm}mss$ but now there is a question that supposes that at starting the sender has $2 ... sender size i.e we will put it down to $1 \hspace{0.1cm}mss$ or to $2\hspace{0.1cm}mss$ .........

asked May 27 in Computer Networks by eyeamgj Loyal (5.8k points) | 120 views

+1 vote

2 answers

27

TCP Connection
"TCP connection is logical, therefore TCP can be connection oriented protocol" Wha is meaning of logical connection? Can u discuss brief above two lines?

asked Mar 15 in Computer Networks by srestha Veteran (101k points) | 137 views

+1 vote

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28

TCP question
Consider two TCP senders $T_{1}$, $T_{2}$ each of them is connected with a different line to a router whose capacity is $9000$ $bytes$. The bandwidth of each of these lines is infinite and the delay of each TCP sender to the router is $11$ $milliseconds$. ... is 2000kbps / 21Mbps + 11msec =.. After the other tcp sender starts to send data the shared common line will be 21Mbps/2

asked Mar 12 in Computer Networks by JakeSmT (27 points) | 148 views

+5 votes

4 answers

29

GATE2018-25
Consider a long-lived $TCP$ session with an end-to-end bandwidth of $1$ $\text{Gbps}$ (-$10^9$ bits-per-second). The session starts with a sequence number of $1234$. The minimum time (in seconds, rounded to the closet integer) before this sequence number can be used again is ____

asked Feb 14 in Computer Networks by gatecse Boss (18.3k points) | 4.5k views

+7 votes

3 answers

30

GATE2018-14
Consider the following statements regarding the slow start phase of the TCP congestion control algorithm. Note that cwnd stands for the TCP congestion window and MSS window denotes the Maximum Segments Size: The cwnd increases by $2$ MSS on every successful acknowledgment The cwnd approximately doubles ... are true Only $\text{(iv)}$ is true Only $\text{(i)}$ and $\text{(iv)}$ are true

asked Feb 14 in Computer Networks by gatecse Boss (18.3k points) | 2.7k views

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