Now answer the following questions:

a$.$ Which header fields in IP datagrams always change from one datagram to the

next within a conversation? Why these fields change? $($Attach appropriate

screenshot$($s$)$ with proper resolution of your capture$)$

b$.$ Which header fields in IP datagrams stay unchanged from one datagram to the

next within a conversation? Why do these fields remain unchanged? $($Attach

appropriate screenshot$($s$)$ with proper resolution of your capture$)$

c$.$ Show the four messages that are used in a DHCP protocol using Wireshark

$($Attach appropriate screenshot$($s$)$ with proper resolution of your capture$).$ To do

this, you need to release the currently allocated IP address to your device and

request a new IP address by running the commands sequentially ipconfig

$/$release and ipconfig $/$renew $($for Windows$)$ or sudo ipconfig set

DHCP $($for Mac$).$ You can find interface$\_$name in your

computer