CCNA Routing and Switching (legacy) — Question 130

Which interface counter can you use to diagnose a duplex mismatch problem?

Answer options

• A. no carrier
• B. late collisions
• C. giants
• D. CRC errors
• E. deferred
• F. runts

Correct answer: B

Explanation

Late collisions are indicative of a duplex mismatch, as they occur when a device tries to send data while the other device is still transmitting. The other options, such as no carrier, giants, CRC errors, deferred, and runts, do not specifically point to duplex mismatches and are related to different issues in network performance.