单项选择题 You want to allow Router R1 to immediately become the active router if its priority is highest than  the active router fails.  What command would you use if you wanted to configure this？ （）

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？" （）