A host starts a TCP transmission with an EstimatedRTT of 36.3ms (from the “handshake”). The host then sends 3 packets and records the RTT for each:
SampleRTT1 = 49.5 ms
SampleRTT2 = 15.8 ms
SampleRTT3 = 27.1 ms
(NOTE: SampleRTT1 is the “oldest”; SampleRTT3 is the most recent.)
Using an exponential weighted moving average with a weight of 0.4 given to the most recent sample, what is the EstimatedRTT for packet #4? Give answer in miliseconds, rounded to one decimal place, without units, so for an answer of 0.01146 seconds, you would enter "11.5" without the quotes.
Given weight = w = 0.4
For Packet #1
Initial EstimatedRTT1 = 36.3 ms
Time out value = 36.3 * 2 = 72.6 ms
SampleRTT1 = 49.5 ms (Less than timeout value)
For Packet #2
EstimatedRTT2 = 0.4 * SampleRTT1 + (1-0.4) * EstimatedRTT1
EstimatedRTT2 = 0.4 * 49.5 + 0.6 * 36.3 = 41.58 ms
Time out value = 41.58 * 2 = 83.16 ms
SampleRTT2 = 15.8 ms (Less than timeout value)
For Packet #3
EstimatedRTT3 = 0.4 * SampleRTT2 + (1-0.4) * EstimatedRTT2
EstimatedRTT3 = 0.4 * 15.8 + 0.6 * 41.58 = 31.27 ms
Time out value = 31.27 * 2 = 62.54 ms
SampleRTT3 = 27.1 ms (Less than timeout value)
For Packet #4
EstimatedRTT4 = 0.4 * SampleRTT3 + (1-0.4) * EstimatedRTT3
EstimatedRTT4 = 0.4 * 27.1 + 0.6 * 31.27 = "29.6 ms"
A host starts a TCP transmission with an EstimatedRTT of 36.3ms (from the “handshake”). The host...
A host starts a TCP transmission with an EstimatedRTT of 36.3ms (from the “handshake”). The host then sends 3 packets and records the RTT for each: SampleRTT1 = 49.5 ms SampleRTT2 = 15.8 ms SampleRTT3 = 27.1 ms (NOTE: SampleRTT1 is the “oldest”; SampleRTT3 is the most recent.) Using an exponential weighted moving average with a weight of 0.4 given to the most recent sample, what is the EstimatedRTT for packet #4? Give answer in miliseconds, rounded to one decimal...
A host starts a TCP transmission with an Estimated RTT of 21.6ms (from the "handshake"). The host then sends 3 packets and records the RTT for each: SampleRTT1 = 11.6 ms SampleRTT2 = 10.6 ms SampleRTT3 = 34.1 ms (NOTE: SampleRTT1 is the "oldest"; SampleRTT3 is the most recent.) Using an exponential weighted moving average with a weight of 0.4 given to the most recent sample, what is the EstimatedRTT for packet #4? Give answer in milliseconds, rounded to one...