When is a first-hop redundancy protocol needed in the distribution layer?()
- A when the design implements Layer 2 between the access arid distribution blocks
- 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 blocks
- F when the design implements Layer 2 between the access and distribution block