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Message transmission using different number of packets

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You want to send a 200 bytes long message from your machine to a friend's machine via 4 intermediate nodes. You are required to use a header size of 5 bytes per packet. You have the option of sending the message as 5 packets, as 10 packets and as 20 packets. Which of these three options minimizes the transmission time? What is the minimum transmission time?

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Whether we send the message of 200 bytes in 5 packets or in 10 packets or in 20 packets, message content still remains the same as 200 bytes. However because we have to use a header size of 5 bytes, with every packet ...

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