A network administrator is investigating a high number of input errors on an interface of a router. The issue is causing slow network performance. Upon closer inspection, the administrator notices that the CRC counter is incrementing. What is the most likely cause of the CRC errors?
Duplex mismatch between the router interface and the switch port.
Faulty cables, ports, or network interface cards (NICs).
Excessive broadcast traffic overloading the interface buffer.
Incorrect clock rate configured on the router interface.