Free CompTIA Network+ N10-009 Practice Question

An increase in checksum errors, often referred to by their specific type such as Cyclic Redundancy Check (CRC) errors, indicates that data has been altered or corrupted during its transmission, commonly due to noise or interference. This provides vital clues about physical layer disturbances or defective hardware. Other answer options like increasing runts or giants relate to concerns with packet sizes, while collision rates focus on network traffic issues, none of which directly imply integrity problems with the transmitted data itself.