A network technician is reviewing the interface counters on a router interface.

CRC stands for Cyclic Redundancy Check, and it is a type of error-detecting code used to detect accidental changes to raw data. If the CRC count is increasing on a particular interface, it indicates that there might be an issue with the cabling, which is causing data corruption. References:

Network+ N10-008 Objectives: 2.1 Given a scenario, troubleshoot common physical connectivity issues.