CompTIA Network+ N10-009 (V9) Practice Question

During peak business hours, users across your enterprise network report noticeably slower file transfers and applications that time-out. Monitoring shows that backbone and distribution links are running constantly at or near 100 % utilization, while interface error counters remain low and device configurations appear correct. Which of the following is the MOST likely root cause of the degradation?

  • Duplex mismatch on an access switch port

  • Incorrect default gateway assigned to clients

  • Faulty fiber transceiver module

  • Network congestion caused by high traffic volume

CompTIA Network+ N10-009 (V9)
Network Troubleshooting
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