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Recent questions tagged tcp

2 votes
3 answers
213
Optimal Window Size
In optimal window size for sender or for finding the maximum window size of sender N, do we consider N=1+2a or N=a. Where a=(propagation time/Transmission time)? For max efficiency: n*Tt should be equal to Tt+2Tp. ie n=1+2a. But in some places it is just n=2a.
In optimal window size for sender or for finding the maximum window size of sender N, do we consider N=1+2a or N=a.Where a=(propagation time/Transmission time)?For max ef...
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1 votes
0 answers
214
doubt
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0 votes
2 answers
216
wrap around time
2 persons are using a channel like TCP. In their link they have used 64-bit sequence numbers with a link speed of 75 Tbps. How long can a packet stay in link without worrying about problem of having 2 packets with same sequence numbers? ans-3 weeks
2 persons are using a channel like TCP. In their link they have used 64-bit sequence numbers with a link speed of 75 Tbps. How long can a packet stay in link without worr...
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7 votes
1 answer
217
CN TCP
Imagine a TCP connection is transferring 6000B. First Byte is numbered as 10010.The sequence number of the last byte sent,if data are sent in 5 segments with the first 4 segments carrying 1000B and last segement carrying 2000B are ?
Imagine a TCP connection is transferring 6000B. First Byte is numbered as 10010.The sequence number of the last byte sent,if data are sent in 5 segments with the first 4 ...
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5 votes
1 answer
222
TCP Network
In a connection, the value of cwnd is $3000$ and the value of rwnd is $5000$. The host has sent $2000$ bytes which has not been acknowledged. How many more bytes can be sent?
In a connection, the value of cwnd is $3000$ and the value of rwnd is $5000$. The host has sent $2000$ bytes which has not been acknowledged. How many more bytes can be s...
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1 votes
2 answers
223
Computer-network TCP-congestion-control
How is the initial slow-start threshold value (ssthresh) determined for the very first time of data transfer?
How is the initial slow-start threshold value (ssthresh) determined for the very first time of data transfer?
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1 votes
0 answers
226
RTO timer || Kurose + Forouzan
If initial_RTT is not given or nothing mentioned about Dev_RTT ...is it ok to follow this method ?? Or no need to consider Dev_RTT at all (just $RTO = 2* ERTT$ ???) Here $RTT_M$ is new RTT and $RTT_S$ is EstimatedRTT
If initial_RTT is not given or nothing mentioned about Dev_RTT ...is it ok to follow this method ?? Or no need to consider Dev_RTT at all (just $RTO = 2* ERTT$ ???)Here $...
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1 votes
1 answer
227
UDP/ICMP
If there's an error detected in a UDP packet it's silently discarded. Whenever an IP packet is discarded ICMP message is sent back to the source. Aren't these conflicting statements? What am I missing here?
If there's an error detected in a UDP packet it's silently discarded. Whenever an IP packet is discarded ICMP message is sent back to the source.Aren't these conflicting ...
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1 votes
2 answers
228
Ace Test Series: Computer Networks - Tcp
Can someone explain what this question means?
Can someone explain what this question means?
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1 votes
3 answers
230
Ace Test Series: Computer Networks - Tcp
Doesn't TCP use both?
Doesn't TCP use both?
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0 votes
0 answers
231
socket,TCP,port number || Kurose and Ross
Question : Solution : Please explain with a rough diagram showing how an application (at app layer) differentiates different source hosts (A or B) dealing with same port : 80 at host C , as well as the role of socket here.
Question :Solution :Please explain with a rough diagram showing how an application (at app layer) differentiates different source hosts (A or B) dealing with same port : ...
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0 votes
0 answers
232
TCP/UDP
Which of the following are true about TCP/UDP ? a)UDP handles congestion control but not Flow control. b)Slow start mechanism deals with Congestion control and Flow Control. c)Fast retransmit deals with Congestion control but not Flow control.
Which of the following are true about TCP/UDP ?a)UDP handles congestion control but not Flow control.b)Slow start mechanism deals with Congestion control and Flow Control...
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2 votes
2 answers
235
Ace Test Series: Computer Networks - Tcp
1st seq number is 1093, 2ns seq is 1094, ... 1460th seq number will be 2552. So the ack number sent by the reciever will be 2552+1=2553. Is this right? Answer in solution given is 2554.
1st seq number is 1093,2ns seq is 1094,... 1460th seq number will be 2552. So the ack number sent by the reciever will be 2552+1=2553.Is this right?Answer in solution giv...
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1 votes
1 answer
236
#Ace Test series TCP problem
I am getting B.. but given answer is C... As H1 sends 300 bytes and initial sequence number is 302.. then it should be transfer bytes from 302-901.. and would be expecting for 902??
I am getting B.. but given answer is C... As H1 sends 300 bytes and initial sequence number is 302.. then it should be transfer bytes from 302-901.. and would be expectin...
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6 votes
2 answers
240
CN-TCP
In a TCP connection, the value of congestion window Cnwd = 2500 and the value of receiver window Rwnd = 4500.The host has sent 2000 bytes which has not been acknowledge. How many more bytes can be sent? A) 2000 B) 500 C) 2500 D) none of these
In a TCP connection, the value of congestion window Cnwd = 2500 and the value of receiver window Rwnd = 4500.The host has sent 2000 bytes which has not been acknowledge. ...
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