Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree ProtocolIEEE 802.1 D？（）

An expanding company is deploying leased lines between its main site and two remote sites. Thebandwidth of the leased lines is 128kb/s each，terminated on different serial interfaces on the main router.These links are used for combined VOIP and data traffic. The network administrator has implemented a VOIP solution to reduce costs，and has therefore reserved sufficient bandwidth in a low latency queue oneach interface for the VOIP traffic. Users now complain about bad voice quality although no drops areobserved in the low latency queue. What action will likely fix this problem？（）

Which two EIGRP options will limit a query domain？（）

In GLBP，which router will answer on client ARP requests？（）

Spanning Tree Protocol IEEE 802.1 s defines the ability to deploy which of these？（）

Which command is used to enable SSM with the range 232.0.0.0 - 255.0.0.0？（）

What is true about Unicast RPF in strict mode？（）

Which message type is constructed and sent from an MSDP router to its MSDP peers when it receives a PIM register message knowing that the MSDP router is also configured as an RP for the PIM domain？（）

Which three protocols or applications should be placed in a class that is configured with WRED？（）

Which types of prefixes will a router running BGP most likely advertise to an IBGP peer， assuming it is notconfigured as a route reflector？（）