Explain, specifically, what is accomplished at each of the following Layers of the OSI Reference

I.Name and briefly explain the functions or purposes of the seven layers of the OSI Reference Model from the top ( Layer 7 ) to the bottom ( Layer 1 ).

II. Explain, specifically, what is accomplished at each of the following Layers of the OSI Reference Model:
A. Transport Layer
B. Network Layer
C. Data Link Layer

III.Explain the structure and importance of a properly designed cable plant.

IV. Briefly explain each of the following;
A. Analog Signaling
B. Digital Signaling
C. Simplex transmission
D. Half-Duplex transmission
E. Full- Duplex transmission
F. Multiplexing
G. Physical Topology
H. Logical Topology
I. Star Topology
J. Ring Topology
K. Circuit Switching
L. Packet Switching

NOTE: PLEASE, I WANT IT TO BE CLEAR WITH GOOD INFORMATION, AND I WANT TO SEE THE ANSWERS UNDER EACH QUESTION.

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