After a computer upgrade at an imaging lab, the upgraded computers are not able to obtain an IP address. Which of the following is most likely the issue?

Question

Options

• AThe switch Is only providing IPv6 addresses.
• BThe OS must be updated to be compatible with the imaging software.
• CThe switch has port security enabled.
• DThe switch does not support multicast traffic.

• A
  4% (2)
• B
  12% (7)
• C
  77% (44)
• D
  7% (4)

Explanation

Port security on a switch ties allowed traffic to specific MAC addresses. When computers are upgraded, the network interface card (NIC) may be replaced or a new motherboard installed, resulting in a different MAC address. If port security is configured, the switch will block frames from the new, unrecognized MAC address, preventing DHCP discovery packets from reaching the DHCP server - hence no IP address is assigned. An IPv6-only switch (A) is unlikely and would still provide addressing. OS compatibility (B) would not affect Layer 2/DHCP communication. Multicast traffic restrictions (D) do not block DHCP, which uses broadcast.

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