Task A

With reference to Chapter $1,$ pages $4-16$ of the textbook, answer the following questions. $1)$ Name one typical protocol on each of the seven layers of the OSI model and explain the function of each of these protocols. $(7$ points$)$

As data flows through the layers of the OSI model, what process is used to wrap an upper layer protocol in a lower layer protocol as data is transmitted from a client to a server within a network? $(3$ points$)$

Explain how the wrapping process mentioned in $(2)$ is performed in a network. $(7$ points$)$

Use the OSI model to draw a well$-$labelled graphical representation of the process mentioned in $(2).(5$ points$).$

Name the Protocol Data Unit $($PDU$)$ for each layer of the OSI model. $(7$ points$)$

On which layer does the following operate? $(3$ points$)$

a$)$ router.

b$)$ switch.

c$)$ hub

Distinguish between a router, switch, and a hub by explaining their function. $(6$ points$)$