Question $8$

Consider ARP$/$RARP frame shown in Figure $8\mathrm{.}1$:

HEN $=$ Hardware oddress length

PLEN $=IP$ addess length

Operation $=1$ ARP request

$=2$ ARP response

$-3$ RARP request

$\frac{?}{{?}_R}=$ARP response

Figure $8\mathrm{.}1$ ARP$/$RARP message format.

$($i$)$ Explain in detail the entries into the last four fields $($Sender MAC address, Sender

IP address, Target MAC address, and Target IP address$)$ for the following messages:

ARP Request;

ARP Reply;

RARP Request;

RARP Reply.

$($ii$)$ Compare and comment on length of each of these messages. Explain whether all

ARP$/$RRAP messages have the same size. How are these messages transmitted?