Here we are going to see the effect of packet size on transmission. Assume that

Question

Here we are going to see the effect of packet size on transmission. Assume that you are sending an email which is 100 Kbyte to Mr. Peter, and TCP/IP model is used. Let us assume that the TCP header is 40 Bytes, IP header is 20 bytes, and the header sizes in data link layer and physical layer add up to 16 bytes. Please calculate:

a. If your email is divided into small packet (150 byte each) at the application layer and then transfer to lower layers, how many bytes (in total) need to be sent out at the physical layer to transmit the entire email to the network?

b. Repeat the above calculation if your email is divided into larger packet (2000 Byte each).

c. Based on the results, summarize how packet size affects the transmission efficiency.

Explanation / Answer

a.389000 bytes

b.8000 bytes

c.512kbps

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