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Q16. (13 pts) Refer to fig. 2. Hosts h1, h2 and h3 are sending data to h4. Assume all packets from hi, h2 and h3

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Q16. (13 pts) Refer to fig. 2. Hosts h1, h2 and h3 are sending data to h4. Assume all packets from hi, h2 and h3 are of length L bits, and R is the transmission rate of link L2 in bits/sec. Denote the transmission delay on link L2 as T. Define the average packet arrival rate a as a ratio, where the numerator is = (number of packets that arrive into N over a time interval of duration X), and the denominator is X. The average packet arrival rate is expressed in packets per second. The traffic intensity is defined as (L * a) / R. Link L2: rate R h1 h4 h2 h3 Figure 2 Write the mathematical formula that expresses T in seconds) as a function of Land R (1 pt) Consider the following packet arrival scenario: Scenario 1: Three packets arrive simultaneously at N into an empty from h3. A packet is arrived if node N has finished receiving the las eously at N into an empty queue, one from h1, one from h2 and one have to contend for link L2, some of them will have to be queued. Answer is finished receiving the last bit of that packet. Because the 3 packets answers below, write clearly Qd1 = ..., Qd2 = ..., average queum I have to be queued. Answer the following questions. In your 201..., Qd2 = ... , average queuing delay = ..., average packet arrival rate = .., traffic intensity = ... For the delays which are not zero, if any, express them ich are not zero, if any, express them as a function of T. What is Qd1, the queuing delay for the first packet that is transmitted (1) What is Qd2, the queuing delay for the second packet that is transmitted (1 pt)? What is Qd3, the queuing delay for the third packet that is transmitted (1 pt)? What is the queuing delay averaged over the 3 packets? (1 pt) Scenario 1-a: If the same arrival scenario repeats itself every 3* T, what is the queuing delay averaged over all the packets? (2 pts) What is the average packet arrival rate a for X = 6 * T, and what is the traffic intensity? (2 pts) Scenario 1-b: If the same arrival scenario repeats itself every 6 * T, what is the queuing delay averaged over all the packets? (2 pts) What is the average packet arrival rate a for X = 6 * T, and what is the traffic intensity? (2 pts) Q16. (13 pts) Refer to fig. 2. Hosts h1, h2 and h3 are sending data to h4. Assume all packets from hi, h2 and h3 are of length L bits, and R is the transmission rate of link L2 in bits/sec. Denote the transmission delay on link L2 as T. Define the average packet arrival rate a as a ratio, where the numerator is = (number of packets that arrive into N over a time interval of duration X), and the denominator is X. The average packet arrival rate is expressed in packets per second. The traffic intensity is defined as (L * a) / R. Link L2: rate R h1 h4 h2 h3 Figure 2 Write the mathematical formula that expresses T in seconds) as a function of Land R (1 pt) Consider the following packet arrival scenario: Scenario 1: Three packets arrive simultaneously at N into an empty from h3. A packet is arrived if node N has finished receiving the las eously at N into an empty queue, one from h1, one from h2 and one have to contend for link L2, some of them will have to be queued. Answer is finished receiving the last bit of that packet. Because the 3 packets answers below, write clearly Qd1 = ..., Qd2 = ..., average queum I have to be queued. Answer the following questions. In your 201..., Qd2 = ... , average queuing delay = ..., average packet arrival rate = .., traffic intensity = ... For the delays which are not zero, if any, express them ich are not zero, if any, express them as a function of T. What is Qd1, the queuing delay for the first packet that is transmitted (1) What is Qd2, the queuing delay for the second packet that is transmitted (1 pt)? What is Qd3, the queuing delay for the third packet that is transmitted (1 pt)? What is the queuing delay averaged over the 3 packets? (1 pt) Scenario 1-a: If the same arrival scenario repeats itself every 3* T, what is the queuing delay averaged over all the packets? (2 pts) What is the average packet arrival rate a for X = 6 * T, and what is the traffic intensity? (2 pts) Scenario 1-b: If the same arrival scenario repeats itself every 6 * T, what is the queuing delay averaged over all the packets? (2 pts) What is the average packet arrival rate a for X = 6 * T, and what is the traffic intensity? (2 pts)

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