Distribution layer: This layer includes LAN-based routers and layer 3 switches . When is a first-hop redundancy protocol needed in the distribution layer?()
- A、OSPF is not supported by the design
- B、HSRP is not supported by the design
- C、preempt tuning of the default gateway is needed
- D、the design implements Layer 3 between the access switch and the distribution switch
正确答案:D
答案解析:有

微信扫一扫手机做题