Which of the following descriptions about dual-machine hot backup is incorrect?

Question

Options

• AWhether it is a Layer 2 or Layer 3 interface, whether it is a business interface or a heartbeat
• BThe default preemption delay is 60s
• CThe proactive preemption function is enabled by default.
• DThe dual-machine hot backup function requires license support

• A
  6% (1)
• B
  12% (2)
• C
  6% (1)
• D
  76% (13)

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