A network administrator observes an elevated count of CRC errors on a switchport over the recent weeks. Extensive testing has confirmed the integrity of the transmission medium and the connected hardware's operational status. What should the administrator investigate NEXT to address the increasing error count?
Check for possible packet loss across the same link, which may be contributing to the errors.
Review the configuration for potential mismatches between the switchport and the endpoint's communication parameters.
Perform a software update on the switch to the latest firmware version.
Examine environmental factors around the switch for possible electromagnetic interference.