computer network

q9

computer network

switch the first coloumn of ms with variables

9. From the TCP estimate simulator, solve the following problenm Current estimates values are as follows: Estimated RTT estimatedRTT 100 msec, deviation in the RTT (DevRTT) 50 msec The next three measured values of the RTT are 116, 134, 98 respectively. Compute TCP's new value of estimatedRTT, DevRTT, and the TCP timeout value after each of these three measured RTT values is obtained. Use the values of -0.125 and 0.25. 116ms 102 106 98ms 266 134ms Estimated RTT DevRTT TCP timeout value 105 30.0625 225.25 3775 1257 Suppose the last RTT measured value was instead 116ms. What would change in the table? Fill in only the numbers that CHANGED 116ms Variable Estimated RTT DevRTT TCP timeout value 134ms116ms 10. We are transmitting 10,000-byte packet on a network a bandwidth of 4Gbps (4E9bps), 6000 km, and a propagation speed of 2.5x10 8 m/s. If you want to keep the network 85% busy, how many packets do you need to have in- flight, and not-yet acknowledged? Show the formula(e)you're using. Page 8 of 9 9. From the TCP estimate simulator, solve the following problenm Current estimates values are as follows: Estimated RTT estimatedRTT 100 msec, deviation in the RTT (DevRTT) 50 msec The next three measured values of the RTT are 116, 134, 98 respectively. Compute TCP's new value of estimatedRTT, DevRTT, and the TCP timeout value after each of these three measured RTT values is obtained. Use the values of -0.125 and 0.25. 116ms 102 106 98ms 266 134ms Estimated RTT DevRTT TCP timeout value 105 30.0625 225.25 3775 1257 Suppose the last RTT measured value was instead 116ms. What would change in the table? Fill in only the numbers that CHANGED 116ms Variable Estimated RTT DevRTT TCP timeout value 134ms116ms 10. We are transmitting 10,000-byte packet on a network a bandwidth of 4Gbps (4E9bps), 6000 km, and a propagation speed of 2.5x10 8 m/s. If you want to keep the network 85% busy, how many packets do you need to have in- flight, and not-yet acknowledged? Show the formula(e)you're using. Page 8 of 9