N10-009 Domain 5: Network Troubleshooting

Slow file share on gigabit link. Verify?

Multiple choice — select one answer

Answer choices

  1. a. Negotiated speed/duplex and cable category
  2. b. Dirty connectors, bend radius, and optical power levels
  3. c. Implement QoS marking/queuing for voice VLAN
  4. d. Internal CA not trusted on client or cert name mismatch

Architectural breakdown & explanation

Half-duplex or 100 Mbps link reduces throughput.

Correct answer(s): a. Negotiated speed/duplex and cable category

Exam domain: Domain 5: Network Troubleshooting (22% weight on the official guide).

Official documentation & study links

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