
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Transcribed Image Text:COMPUTING TCP'S RTT AND TIMEOUT VALUES
Suppose that TCP's current estimated values for the round trip time (estimatedRTT) and deviation in the RTT (DevRTT) are 310 msec and 45 msec,
respectively (see Section 3.5.3 for a discussion of these variables). Suppose that the next three measured values of the RTT are 360 msec, 330
msec, and 350 msec respectively.
application
TCP
IP
link
physical
What is the TCP timeout for the first RTT?
Answer
RTT
Internet
Compute TCP's new value of DevRTT, estimated RTT, and the TCP timeout value after each of these three measured RTT values is obtained. Use the
values of a = 0.125, and ß = 0.25. Round your answers to two decimal places after leading zeros.
QUESTION 3 OF 9
application
TCP
IP
link
physical
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- Consider one TCP connection on a path with a bottleneck link with capacity L. We have a file of size F(assume F is a very large file size). If TCP segment size is B bytes, the two-way propagation delay is tp and connection is always in congestion avoidance phase, find the following: A. Maximum window size that TCP can achieve B. Average window size and average throughput in this TCP connection C. Time it will take from connection establishment to reaching the maximum window size.arrow_forwardIs this the right answer or the wrong answer? Assume that the most recent SampleRTT for a TCP connection is one second. The TimeoutInterval setting for the connection must now be set to a value that is greater than one second.arrow_forwardConsider a TCP connection with the following parameters: a) Initial ssthreshold = 4 segmentsb) Round Trip Time (RTT) = 10 millisecondsc) Timeout period = 40 millisecondsd) Segment size = 3900 bytesThe TCP connection was used to transfer 17 data segments. While sendingthe segments, data segment 7 and data segment 15 were lost the first timethey were sent (but arrived at the receiver properly when retransmitted).There were no other segment losses apart from the aforementioned. Assumethat data segments received out-of-order are buffered at the receiver. Whatis the average throughput obtained in sending all the data segments (inbytes/sec) including draw a diagram to show the communication process in detail.arrow_forward
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