單項選擇題

In PIM-SM what control plane signaling must a multicast source perform before it begins to send multicasttraffic to a group？（）

A.The source must send a PIM Register message to the rendezvous point （RP）.
B.The source must first join the multicast group using IGMP before sending.
C.The source must perform a Request to Send （RTS） and Clear to Send （CTS） handshake with the PIM designated router （DR）.
D.No control plane signaling needs to be performed； the source can simply begin sending on the local subnet.

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多項選擇題

Which of these statements about penultimate hop popping are true？（）

A.It is used only for directly connected subnets or aggregate routes
B.It can only be used with LDP.
C.It is only used when two or more labels are stacked.
D.It enables the Edge LSR to request a label pop operation from Its upstream neighbors
E.It is requested through TDP using a special label value that is also called the implicit-null value.
F.It is requested through LDP using a special label value that is also called the implicit-null value.

單項選擇題

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

A.prefixes received from any other BGP peer and prefixes locally originated via network statements or redistributed
B.all prefixes in its routing table
C.prefixes received from EBGP peers and prefixes locally originated via network statements or redistributed
D.prefixes received from EBGP peers and prefixes received from route reflectors
E.prefixes received from other IBGP peers， prefixes received from EBGP peers，and prefixes redistributedto BGP
F.prefixes received from other IBGP peers and prefixes received from route reflectors

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In PIM-SM what control plane signaling must a multicast source perform before it begins to send multicasttraffic to a group？（）

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Which of these statements about penultimate hop popping are true？（）

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

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In PIM-SM what control plane signaling must a multicast source perform before it begins to send multicasttraffic to a group？（）

Which of these statements about penultimate hop popping are true？（）

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