5-1a. TCP RTT estimation and timeout value. Suppose that TCP's current estimated values for the und trip time (estimated RTT) and deviation in the RTT (DevRTT) are 300 msec and 13 msec, spectively. Suppose that the next two measured RTTS are 330 msec and 240 msec respectively. We want to calculate TCP's RTT estimate, and the value of TCP's timeout interval. Note that given a ew measured RTT, you should first compute devRTT, then estimated RTT (the textbook incorrectly verses those computations), and then (lastly) the timeout interval. Use the values of a = 0.125, B 25. = ollowing the newly measured RTT of 330 msec, what is the new value for devRTT in msec? [Note: und your answer to the nearest msec - enter an integer value, do not include any decimal aces/point or any leading zeros, but keep your full resolution value of devRTT handy and use it in hy later calculations you perform using devRTT.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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3.5-1a. TCP RTT estimation and timeout value. Suppose that TCP's current estimated values for the
round trip time (estimated RTT) and deviation in the RTT (DevRTT) are 300 msec and 13 msec,
respectively. Suppose that the next two measured RTTS are 330 msec and 240 msec respectively.
We want to calculate TCP's RTT estimate, and the value of TCP's timeout interval. Note that given a
new measured RTT, you should first compute devRTT, then estimated RTT (the textbook incorrectly
reverses those computations), and then (lastly) the timeout interval. Use the values of a = 0.125, B =
0.25.
Following the newly measured RTT of 330 msec, what is the new value for devRTT in msec? [Note:
round your answer to the nearest msec - enter an integer value, do not include any decimal
places/point or any leading zeros, but keep your full resolution value of devRTT handy and use it in
any later calculations you perform using devRTT.
Transcribed Image Text:3.5-1a. TCP RTT estimation and timeout value. Suppose that TCP's current estimated values for the round trip time (estimated RTT) and deviation in the RTT (DevRTT) are 300 msec and 13 msec, respectively. Suppose that the next two measured RTTS are 330 msec and 240 msec respectively. We want to calculate TCP's RTT estimate, and the value of TCP's timeout interval. Note that given a new measured RTT, you should first compute devRTT, then estimated RTT (the textbook incorrectly reverses those computations), and then (lastly) the timeout interval. Use the values of a = 0.125, B = 0.25. Following the newly measured RTT of 330 msec, what is the new value for devRTT in msec? [Note: round your answer to the nearest msec - enter an integer value, do not include any decimal places/point or any leading zeros, but keep your full resolution value of devRTT handy and use it in any later calculations you perform using devRTT.
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