If a (*, G) entry exists in the RP, which of the following statements about the source registration process are true in PIM-SM?

• A.The RP unicasts a registration stop message to the first hop router connected to the multicast source.
• B.The RP sends an (S, G) Join message hop by hop to the first hop DR connected to the multicast source to add the multicast source to the SPT.
• C.The first-hop DR connecting to the source sends received multicast data to the RP hop by hop.
• D.The first hop DR connecting to the source encapsulates received multicast data into PIM registration information and unicasts the encapsulated information to the RP.
• E.The RP decapsulates registration information and uses RPT to send data packets to be sent to the multicast group to the outbound interface.

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Exhibit.

As shown in the figure, Super VLAN is enabled on SWA (a LAN switch). The Super VLAN configuration is
as follows:

Which of the following specifics the time order in which the preceding debugginginformationis generated?

• A.3--4--1--2
• B.1--2--3--4
• C.3--2--1--4
• D.1--4--2--3

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1.Onthe backbone network , if a PE is connect to a CE, VPN instances need to breconfiguredon the PE, and
interface on the PE for connecting to the CE must be bound to a VPN instance. After binding an interface to a
VPN instance, you must configure the IP address of the interface between PEs, IS-IS configured for PE
interworking. PLSA basic capabilities and MPLS LSP are configured for LSP establishment, and MP _IBGP
is configured for VPN route exchange VPN routesexchange , LDAP is short for Label Distribution Protocol,
and IBGP is short for interior Border gateway protocol.
2. A CE exchange route exchange routers with a PE over External Border gateway Protocol (EBGP.
Configure interior gateway protocol (IGP) on the IS-IS+MPLS backbone networking toachievethe
interworking between PEs and IP routers.

• A.-4
• B.-1
• C.-2
• D.-3
• E.-5

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Which of the following statements about control words in the L2VPN are true?

• A.The control word can be used for packet padding For example, when the public network uses Ethernet
  and the AC uses Peer-to-protocol (PPP), control words can be used to transfer and identify PPP packet
  with a bytes.
• B.When SVC VLL is used, if PEs at two ends of a VC use different control words, the may not become
  Up.
• C.The control word can be used to identically the packet sequence.
• D.A control word generally has two bytes and can ne extended to four bytes.
• E.When Martini VLL is used, if PEs at two ends of a virtual connection (VC) use different control words,
  the VC may not become Up

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As shown in the figure, a CE requires access to the internet , and PE 1is connected to the gateway.
Configurations on PE 1 are as follows:

PE 1 is connected to the internet gateway through interface 175.311.2 CE and CE 2 cannot ping the interface.
Which of the following statements are true?

• A.NAT translation must be configured on interface pos2/1.0 instead of interface s0./01.0
• B.A private network route must be configured on the internet gateway.
• C.A default must be configured on CE an CE 2.
• D.The public parameter of a static default route must be configured.

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