Refer to the exhibit. An engineer with an employee ID: 1234:56:789 started to configure two routers for OSPF for a client. They are advertising their loopback addresses. Which additional configuration must the engineer perform so that the GigabitEthernet 1/1 link is preferred and the GigabitEthernet 2/1 link is a backup?

• A.router1(config)# router ospf 1
  Router1 (config-router)# auto-cost reference-bandwidth 1000
  router2(config)# router ospf 1
  router2(config-router)# auto-cost reference-bandwidth 1000
• B.router1(config)# router ospf 1
  router1(config-router)# auto-cost reference-bandwidth 100
  router2(config)# router ospf 1
  router2(config-router)# auto-cost reference-bandwidth 100
• C.router1(config)# interface gigabitethernet 1/1
  router1(config-if)/# ip ospf cost 64
  router2(config)# interface gigabitethernet 1/1
  router2(config-if)# ip ospf cost 64
• D.router1(config)# interface gigabitethernet 2/1
  router1(config-if)# ip ospf cost 5
  router2(config)# interface gigabitethernet 2/1
  router2(config-if)# ip ospf cost 5

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Refer to the exhibit:

When implementing an LDP protocol, an engineer experienced an issue between two directly connected routers and noticed that no LDP neighbor exists for 1.1.1.1.
Which factor should be the reason for this situation?

• A.LDP needs to be enabled on the R2 physical interface
• B.R2 does not see any hellos from R1
• C.LDP needs to be enabled on the R2 loopback interface
• D.R2 sees the wrong type of hellos from R1

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After a series of unexpected device failures on the network, a Cisco engineer is deploying NSF on the network devices so that packets continue to be forwarded during switchovers. The network devices reside in the same building, but they are physically separated into two different data centers. Which task must the engineer perform as part of the deployment?

• A.implement OSPF to maintain the link-state database during failover.
• B.implement VRFs ana specify the forwarding instances that must remain active during failover.
• C.implement an L2VPN with the failover peer to share state Information between the active and standby devices.
• D.implement Cisco Express Forwarding to provide forwarding during failover

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Refer to the exhibit.

An engineer is implementing Auto-RP and reviewing the configuration of the PE-A. Which configuration permits Auto-RP messages to be forwarded over this interface?

• A.PE-A(config-if)#ip pim sparse-mode
• B.PE-A(config-if)#no ip pim bsr-border
• C.PE-A(config-if)#ip igmp version 3
• D.PE-A(config-if)#ip pim sparse-dense-mode

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Refer to the exhibit. The ISP is implementing a new hosting-as-a-service solution for its business customers. Service accessibility must be unique and separate for each customer. The network architect must ensure that multiple paths toward the hosting-as-a-service solution are always available. Basic protection against traffic black-holing on the MPLS network is required in case of link failure. Which two actions must the engineering team perform to meet the requirements?
(Choose two.)

• A.Enable the VRF-Lite feature on router R4 and enable BGP address-family VPNv4.
• B.Configure the mpls ldp sync command in the MPLS network with the BGP additional-paths receive and additional-paths send options.
• C.Configure the fast-reroute per-prefix command for the IS-IS protocol in the MPLS network and enable the BGP route-reflector feature on R2.
• D.Create the hosting-as-a-service VRF on router R4 and configure it with the route target both
  65123:88 command.
• E.Configure the fast-hello command under the IS-IS routing protocol with the BGP multipath 2 option enabled.

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