Using a computer networks to perform an application, many pieces come together to assist in the operation. A network architecture or communication model places the appropriate network pieces in layers.

1.Draw and List the layers of the OSI model.

2.List the layers of the TCP/IP Protocol and describe the duties of each layer.

3.List the OSI layer that performs each of the following functions:

a. Data compression

b. Multiplexing

c. Routing(30)

d. Definition of a signal's electrical characteristics

e. E-mail

f. Error detection

g. End-to-end flow control

4.For each of the functions, list the TCP/IP protocol suite layer that performs that function.