#58. Which technology manages multicast traffic at Layer 2 by configuring Layer 2 interfaces dynamically to forward multicast traffic only to those interfaces that want to receive it?
#59. Which parameter will be used to determine when to disconnect an idle established DDR call, when the line is needed to place a DDR call to a different destination?
#60. Company.com has unique dial requirements for each branch site thatcommunicates with a central site router.Which two commands permit multiple physicalinterfaceon Centralrouter to be shared by multiple remote sites while retaining theirunique site requirements? (Choose two)