We have $6$ host interfaces connected to an $8-$port switch. Each host interface is numbered starting with $0,$ and each port of the switch is also numbered starting with $0.$

Device $0$ has MAC address $90-31-$CD$-8$A$-53-$CC and is connected to port $0$ of the Switch.

Device $1$ has MAC address $00-20-$B$8-3$C$-4$B$-9$B and is connected to port $1$ of the Switch.

Device $2$ has MAC address $00-20-66-$CD$-29-6$B and is connected to port $2$ of the Switch.

Device $3$ has MAC address $7$C$-$D$8-44-$CE$-$CF$-36$ and is connected to port $3$ of the Switch.

Device $4$ has MAC address $3$C$-4$A$-92-66-$A$3-65$ and is connected to port $4$ of the Switch.

Device $5$ has MAC address $48-$AA$-5$D$-51-52-$B$0$ and is connected to port $5$ of the Switch.