(Solved) : Origin Servers Q1 8 Marks Network Delay Performance Requirements Analysis Includes Gatheri Q41333584 . . .

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Origin servers Q1 [8 marks, Network delay & performance] Requirements analysis includes gathering, analysing, and developing

Origin servers Q1 [8 marks, Network delay & performance] Requirements analysis includes gathering, analysing, and developing requirements for the network. This question addresses the problem of developing and measuring the delay performance of an institution network. Public Internet 15 Mbps access link Consider the institutional network shown in the figure to the right. Assume that each device within the institution requests an average of 16 objects per second from the origin servers. The average object size requested by the devices within the institution is 850,000 bits. Ignore other types of traffic flows and answer the following questions. X 100 Mbps LAN a) What is the average time required to transmit (dtran) an object over the 15 Mbps access link? (1 mark) Institutional network b) What is the traffic intensity (tint) of the 15 Mbps access link? (2 marks) c) What is the average access delay of the 15 Mbps access link? Hint: the average access delay of the 15 Mbps access link can be computed as dtran /(1- tint). (2 marks) d) The institution wants to upgrade the 15 Mbps access link, i.e., replace the access link with a higher- speed link. What is the minimum throughput (or link capacity) of the new access link to achieve an average access delay of 300 ms? (3 marks) Show transcribed image text Origin servers Q1 [8 marks, Network delay & performance] Requirements analysis includes gathering, analysing, and developing requirements for the network. This question addresses the problem of developing and measuring the delay performance of an institution network. Public Internet 15 Mbps access link Consider the institutional network shown in the figure to the right. Assume that each device within the institution requests an average of 16 objects per second from the origin servers. The average object size requested by the devices within the institution is 850,000 bits. Ignore other types of traffic flows and answer the following questions. X 100 Mbps LAN a) What is the average time required to transmit (dtran) an object over the 15 Mbps access link? (1 mark) Institutional network b) What is the traffic intensity (tint) of the 15 Mbps access link? (2 marks) c) What is the average access delay of the 15 Mbps access link? Hint: the average access delay of the 15 Mbps access link can be computed as dtran /(1- tint). (2 marks) d) The institution wants to upgrade the 15 Mbps access link, i.e., replace the access link with a higher- speed link. What is the minimum throughput (or link capacity) of the new access link to achieve an average access delay of 300 ms? (3 marks)

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