A network administrator is troubleshooting connectivity issues on a corporate network. The issues include a workstation that cannot access the Internet and a VoIP phone that is not receiving a dial tone. Given that both devices are located in the same office, which of the following actions is the BEST first step to approach these separate problems individually?
Verify the workstation's NIC and the VoIP phone's physical connectivity.
Check the switch port configuration for the respective devices.
Reconfigure the VLAN assignments for the office.
Run a virus scan on the workstation.