200-301: Cisco Certified Network AssociateDemo

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QuestionQ464

Network Access

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Refer to the exhibit. The switch cat9k-acc-1 connects users to the campus LAN. Printing services cannot be reached over the network. Which interface problem is causing the connectivity issue?

  • A A bad checksum is causing Ethernet frames to drop.
  • B Excessive collisions are causing dropped frames.
  • C A large number of broadcast packets are resulting in a port reset.
  • D The interface output queue cannot process the Ethernet frames.
Explanation

A high CRC/frame error count indicates corrupted Ethernet frames are being received and discarded on the interface. In Cisco interface statistics, CRC errors mean the frame failed the FCS checksum, which is a Layer 1/2 integrity problem and commonly results from cabling, transceiver, interference, or duplex-related faults. The other counters shown do not support the alternatives: a single collision is not excessive, many broadcasts do not by themselves cause a port reset, and a single output-queue drop does not show the queue is unable to handle traffic.

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