You observe that the following packets are transmitted from different egress ports of an $8-$port switch.

You do not have access to the ingress ports. That is$,$ you can only see what comes out of the switch, not

what goes into it$.$

$70,60$ denotes a packet with $DA=70$ and $SA=60.$

No address migration. No aging timer expiration.

Show the contents of the forwarding table after packet $4.$