Start the TCP$/$IP $($Reliable Connection Simulator$)$ app. Make sure you use the updated

app as it gives more consistent results.

$2.$ In the Your Message field, type the following message and then press the

Send a message button

Computer networking: Packet City!

$3.$ Watch as the entire message is transformed into a series of packets that are sent from

node $0$ to node $1.$

a$.$ How many DAT packets were sent?

b$.$ How many ACK packets were sent?

$4.$ Now determine the total number of characters that are sent between the two nodes.

When counting characters in a packet make sure you count all the characters. For

example, in $,$ the characters on the first line $$DAT $0105147$ are

considered the header, and in this case, comprise $10$ characters. The $10$ characters on

the second line $($will be br$)$ are the data of the message being transmitted. Thus, there

are $20$ characters in this entire packet. $($The spaces that appear in the header are simply

there for your convenience so you can see the information in the $4$ fields more clearly.

Spaces in the header are not transmitted, however spaces in the data are!$)$

a$.$ How many characters are in the header of each DAT packet?

b$.$ How many characters are in the body of each DAT packet?

c$.$ How many characters are in the header of each ACK packet?

d$.$ How many characters are in the body of each ACK packet?

e$.$ What is the total number of characters that were sent in both directions

between the two nodes? Make sure that you accurately count the characters in

every DAT and ACK packet, including the very last one!

$5.$ Finally, compute the percentage overhead for this type of communication. Overhead is defined as the number of characters transmitted but not an integral part of the message

divided by the total number of characters transmitted.

$6.$ Generally, a large value for overhead is not a good thing. What are some things you

could do to decrease the amount of overhead? Would your ideas always work? Wherecould they fail?