Correct Answer: Physical layer issues like bad cabling, duplex mismatch, or faulty transceiver Explanation: High "Input errors" (CRC errors, runts, giants, etc.) are strong indicators of Layer 1 (physical) problems such as faulty cables, dirty fiber connectors, duplex mismatches, or issues with the transceivers or network interface cards.
Correct Answer: Physical layer issues like bad cabling, duplex mismatch, or faulty transceiver Explanation: High "Input errors" (CRC errors, runts, giants, etc.) are strong indicators of Layer 1 (physical) problems such as faulty cables, dirty fiber connectors, duplex mismatches, or issues with the transceivers or network interface cards.