Which two statements about late collisions are true? (Choose two.)

Question:
Which two statements about late collisions are true? (Choose two.)

• They may indicate a duplex mismatch.
• By definition, they occur after the 512th bit of the frame has been transmitted.
• They indicate received frames that did not pass the FCS match.
• They are frames that exceed 1518 bytes.
• They occur when CRC errors and interference occur on the cable.

Explanation: A late collision is defined as any collision that occurs after the first 512 bits of the frame have been transmitted. The usual possible causes are full-duplex/half-duplex mismatch, exceeded Ethernet cable length limits, or defective hardware such as incorrect cabling, non-compliant number of hubs in the network, or a bad NIC.

Note: On an Ethernet connection, a duplex mismatch is a condition where two connected devices operate in different duplex modes, that is, one operates in half duplex while the other one operates in full duplex.

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