Which statements accurately describe the router$-$on$-$a$-$stick method and the function of sub$-$interfaces? Select all that apply.

what ia the answer?

$1.$Sub$-$interfaces facilitate inter$-$VLAN communication by tagging incoming frames with appropriate VLAN IDs.

$2.$The router$-$on$-$a$-$stick method requires separate physical interfaces on a router for each VLAN being routed.

$3.$Sub$-$interfaces allow a single physical interface to be logically divided into multiple virtual interfaces, enabling routing between VLANs.

$4.$The router$-$on$-$a$-$stick method utilizes a single physical interface on a router to route traffic between multiple VLANs.

$5.$Sub$-$interfaces are virtual interfaces configured on a router or Layer $3$ switch, each associated with a specific VLAN.