Final answer:
The network technician is following the troubleshooting approach of verifying the physical connectivity of cables.
Step-by-step explanation:
The network technician is following the troubleshooting approach of verifying the physical connectivity of cables. This is an important first step in troubleshooting email connectivity issues.
By checking the physical connection of cables, the technician can ensure that the user's computer is properly connected to the network and that there are no issues with the cables themselves.