多项选择题 WhatthreetasksmustanetworkadministratorperformtoproperlyconfigureHotStandbyRoutingProtocol（HSRP）？（）

单项选择题 Refer to the exhibit. HSRP has been configured and Link A is the primary route to router R4.  When Link A fails， router R2 （Link B） becomes the active router.  Which router will assume the  active role when Link A becomes operational again？" （）

单项选择题 Refer to the exhibit. The Gateway Load Balancing Protocol has been configured on routers R1  and R2， and hosts A and B have been configured as shown.  Which statement can be derived from  the exhibit？（）