You are tasked with configuring a new switch to ensure that a specific port, GigabitEthernet $\frac{0}{3},$ is only used by a device with a known MAC address for security reasons.

Which of the following steps and commands are necessary to achieve this?

Directly specify the allowed MAC address in the global configuration mode.

Enter interface configuration mode for GigabitEthernet $\frac{0}{3},$ enable port security, and then specify the allowed MAC address.

Set the switch port to trunk mode and specify the allowed VLANs.

Enable DHCP snooping on the switch to track the device's MAC address.