$1.$ Which utility has output similar to this? $"443$ ms $17$ ms $15$ ms border$-$edge.rwanet.net $[195\mathrm{.}63\mathrm{.}2\mathrm{.}200]"$A$)$ TROUTEB$)$ TRACERTC$)$ ARPD$)$ PING

$2.$ In November $2000,.$biz, $.$info, $.$name, $.$pro, $.$aero, $.$museum, and $.$coop were initially approved as additional domain $\_\_\_\_\_\_\_\_\_\_.$A$)$ SubnetB$)$ UsersC$)$ TypesD$)$ Computers

$3.$A VPN uses an IP $\_\_\_\_\_\_\_\_\_\_$ protocol and security services that is transparent to the network users.A$)$ProxyB$)$ SessionC$)$ UDPD$)$ Tunneling

$4.$A layer $3$ switch is essentially aA$)$ switch and router combined into one package.B$)$ switch and hub combined into one package.C$)$ switch that uses MAC addresses at layer $3.$D$)$ router that uses IP addresses at layer $2.$