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Task2: In packet switching technology the packet size is an import parameter when it comes to efficiency and reducing the network latency. Let us assume a network which consists of a sender host and a receiver host at nh hops faraway from each other's (nh-1 routers R). SRR...S. If we assume that all links have a bit-rate B bps and originally the message to be send from the sender to the receiver is of size L bits. 1) Give the formula to compute the network latency if we assume circuit switching (switching time per switch is s seconds). 2) Same as in 1) but we assume packet switching with packet size p bits. 3) From 2) drive the best packet size p which give the best performance (minimum network latency). Hint. One way to find out the minimum of a function f is to find its derivative f'(0). 4) Verify your result by providing prove example.

Task2: In packet switching technology the packet size is an import parameter when it comes to efficiency and reducing the network latency. Let us assume a network which consists of a sender host and a receiver host at nh hops faraway from each other's (nh-1 routers R). SRR...S. If we assume that all links have a bit-rate B bps and originally the message to be send from the sender to the receiver is of size L bits. 1) Give the formula to compute the network latency if we assume circuit switching (switching time per switch is s seconds). 2) Same as in 1) but we assume packet switching with packet size p bits. 3) From 2) drive the best packet size p which give the best performance (minimum network latency). Hint. One way to find out the minimum of a function f is to find its derivative f'(0). 4) Verify your result by providing prove example.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Task2: In packet switching technology the packet size is an import parameter when it comes to efficiency and reducing the network latency. Let us assume a network which consists of a sender host and a receiver host at nh hops faraway from each other's (nh-1 routers R). S→R→R→ ...→S. If we assume that all links have a bit-rate B bps and originally the message to be send from the sender to the receiver is of size L bits. 1) Give the formula to compute the network latency if we assume circuit switching (switching time per switch is s seconds). 2) Same as in 1) but we assume packet switching with packet size p bits. 3) From 2) drive the best packet size p which give the best performance (minimum network latency). Hint. One way to find out the minimum of a function f is to find its derivative f'(0). 4) Verify your result by providing prove example.
Transcribed Image Text:Task2: In packet switching technology the packet size is an import parameter when it comes to efficiency and reducing the network latency. Let us assume a network which consists of a sender host and a receiver host at nh hops faraway from each other's (nh-1 routers R). S→R→R→ ...→S. If we assume that all links have a bit-rate B bps and originally the message to be send from the sender to the receiver is of size L bits. 1) Give the formula to compute the network latency if we assume circuit switching (switching time per switch is s seconds). 2) Same as in 1) but we assume packet switching with packet size p bits. 3) From 2) drive the best packet size p which give the best performance (minimum network latency). Hint. One way to find out the minimum of a function f is to find its derivative f'(0). 4) Verify your result by providing prove example.
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