Explain the five layers of Internet protocol stack.

$($a$)$ Give an example to discuss how the message is communicated from the source to the

destination via a link$-$layer switch and the router.

$($b$)$ Name the specific layers of Internet protocol stack implemented by devices such as

source, destination, router, and link$-$layer switch.

$($c$)$ Discuss which part of the packet is created$/$read$/$modified by a specific layer of the

Internet protocol stack of the specific device.