RTA is a provider edge (PE) router. OSPF is deployed between RTA and a customer edge (CE). Which of the following can be used to avoid routing loops when RTA generate an autonomy system-external (ASE) link-state advertisement (LSA) and sends it to the CE?

• A.Configuring the same domain ID on the PE
• B.Configuring Shame Link among PEs
• C.Configuring the same VPN route tag on the PE
• D.Setting DN-bit in the ASE LSA

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For the Eudemon firewall, the nat-policy command is configured in which mode?

• A.Interzone mode
• B.Intrazone mode
• C.Interface mode
• D.System mode

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Which statement about the MPLS LSP traceroute is true?

• A.The egress route sends back an reply packet containing the downstream mapping TLV if the receives
  Echo request contains the downstream mapping TLV.
• B.Echo request route sends by the LSP traceroute can cay multiple downstream mapping TLVs.
• C.The destination IP address ifan Echo request sent by the LSPtraceroute is the IP address of the
  corresponding FEC.
• D.The downstream mapping TLV is used to carry downstream information of the correct node.

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RTA is a leaf router that directly connects to host A through interface GigabitEthernet 1/0/0. The interface is configured as follows:
interface Ethernet1/0/0
undo shutdown
ip address 192.168.4.2 255.255.255.0
pim sm
igmp enable
igmp version 3
igmp ssm-mapping enable
Configurations in the IGMP view are as follows:
igmp
ssm-mapping 233.1.1.0 255.255.255.0 10.10.1.1
A user sends an IGMPv2 Report message on host A to join groups 232.1.1.1 and 233.1.1.1 but the user cannot receive (10.10.1.1, 232.1.1.1) and (10.10.1.1, 233.1.1.1) messages. To solve this problem, which of the following configurations are required?

• A.Configure ssm-mapping 232.1.1.0 255.255.255.0 10.10.1.1 in the IGMP view.
• B.Configure ssm-policy in the PIM view and use the ACL to set the SSM group address range to 232.1.1.1.
• C.Configure ssm-policy in the PIM view and use the ACL to set the SSM group address range to 232.1.1.1 and 233.1.1.1.
• D.Configure ssm-policy in the PIM view and use the ACL to set the SSM group address range to 233.1.1.1.

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Which of the following are rules for the router to check the RPF after receiving SA messages from the MSDP?

• A.Query the MBGP route and then the BGP route
• B.Check the RPF based on the source RP contained in the received SA message.
• C.Check the RPF based on the next hop of the route that reaches the source RP.
• D.Query the BGP route and then the MBGP route

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