多项选择题 Router R1 and R2 are both configured for HSRP.  Which two statements about the HSRP priorities  of these two routers are true？（）

单项选择题 Which first-hop redundancy solution listed would supply Company clients with MAC address0000.0C07.AC0A for group 10 in response to an ARP request for a default gateway？（）

单项选择题 You work as a network technician at Company. Your boss， Mrs.   ， is interested in   GLBP. In particular， she wants to know the multicast address that this protocol uses.  What should  you tell her？ （）