Examine the structure of a protocol stack consisting of four layers that include the

application layer at the top, followed by TCP$,$ IP$,$ and finally Ethernet at the bottom. The

Ethernet layer is unique in that it utilizes both a header and a trailer, unlike the other

layers that only use a header. The respective sizes for the headers are as follows:

application $-16$ bytes, TCP $-20$ bytes, IP $-20$ bytes, whereas the Ethernet layer has a $14-$

byte header and a $4-$byte trailer $($neglect any preamble or gap considerations$).$