A technician is connecting DSL for a new customer. After installing and connecting the on-premises equipment,
the technician verifies DSL synchronization. When connecting to a workstation, however, the link LEDs on the
workstation and modem do not light up. Which of the following should the technician perform during
troubleshooting?


A. Identify the switching loops between the modem and the workstation.
B. Check for asymmetrical routing on the modem.
C. Look for a rogue DHCP server on the network.
D. Replace the cable connecting the modem and the workstation.