$1.$ The source mac address at point $1$ is $2.$ The destination mac address at point $1$ is $3.$ The source IP address at point $1$ is $4.$ The destination IP address at point $1$ is $5.$ Do the source and destination mac addresses change at point $2?6.$ The source mac address at point $2$ is $7.$ The destination mac address at point $2$ is $8.$ Do the source and destination mac addresses change at point $4?9.$ The source mac address at point $4$ is $10.$ The destination mac address at point $4$ isonsider three LANs interconnected by two routers, as shown in below figure. Assign IP addresses to all of the interfaces. For subnet $1($LAN $1)$ use addresses of the form $192\mathrm{.}168\mathrm{.}1.$xxx; for subnet $2($LAN $2)$ use addresses of the form $192\mathrm{.}168\mathrm{.}2.$xxx; and for subnet $3($LAN $3)$ use addresses of the form $192\mathrm{.}168\mathrm{.}3.$xxx$.($i$.$e$,$ replace xxx with appropriate numbers$)$ Assign MAC addresses to all of the adapters. $($i$.$e$,$ replace all $\backslash ($ x x$-$x x$-$x x$-$x x$-$x x$-$x x $\backslash )$ with appropriate numbers$)$ Consider sending an IP datagram from host E to host B$.$ Suppose that all the ARP tables are up to date. Answer the following questions: