Crucial Exams

CompTIA Server+ SK0-005 Practice Question

During an overnight hardware refresh, a technician swapped the onboard NIC in a Windows file server for a new dual-port adapter. The next morning, users report they cannot reach the server. Investigation shows:

  • The server's NIC status reads "network cable unplugged."
  • Switch interface Gi1/0/24 (the server's uplink) shows err-disabled state, and the "Security violation counter" increases each time the port is manually brought up.
  • The VLAN assignment and cabling are confirmed correct.

Which of the following is the MOST likely reason the switch keeps disabling the port?

  • The DHCP snooping binding for Gi1/0/24 has expired, so the switch is discarding the server's frames.

  • Port security allows only a pre-defined MAC address, and the replacement NIC reports a different MAC.

  • Spanning Tree has placed the interface in a blocking state because the port's VLAN ID is inconsistent.

  • 802.1X authentication on the switchport is configured for multi-host mode, but only one host is attached.

CompTIA Server+ SK0-005
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