Which of the following should the network technician check NEXT?

The engineering department wants to bring a legacy computer online to test a failed component. When patching the device into the switch, there are no link lights or connectivity. The legacy computer can ping its loopback address successfully. Another device can connect to that same port without issues.

Which of the following should the network technician check NEXT? (Choose two.)
A . Speed setting on the switch
B . Duplex requirements
C . Firmware version
D . Protocols the legacy computer supports
E . Network card drivers
F . VLAN settings

Answer: A,D