When is a first-hop redundancy p

题目

When is a first-hop redundancy protocol needed in the distribution layer?()

  • A、when HSRP is not supported by the design
  • B、when multiple vendor devices need to be supported
  • C、when preempt tuning of the default gateway is needed
  • D、when a robust method of backing up the default gateway is needed
  • E、when the design implements Layer 2 between the access switch and the distribution switch
  • F、when the design implements Layer 3 between the access switch and the distribution switch
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