[单选题]62、 When you are configuring active/standby failover, which of the following is not a required step for successful operation?当配置活动/备份的故障切换对时，对于成功的操作来说，下面的哪一个不是一个必需的步骤?
A. Configure failover interfaces 配置故障切换接口
B. Configure standby peer interface addresses 配置standby对等体接口地址
C. Select failover criteria 选择故障切换标准
D. Configure interface virtual MAC addresses 配置接口虚拟MAC地址