Which of the following description of the role of the free ARP message is wrong?

Question

Options

• AUsed to advertise the active/standby switchover in the VRRP backup group.
• BUsed to advertise a new current AC address: The sender replaces the NIC and the AC address
• CUsed to check duplicate IP addresses: Normally, no ARP response will be received. If received, it
• DFree ARP packets are used to keep active with the gateway device when the host is idle.

• A
  5% (2)
• B
  17% (7)
• C
  7% (3)
• D
  71% (29)

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