Refer to the exhibits. All links inside the network are configured at a default cost of one inside the fully converged OSPF domain. Given the configuration from XR1, which interface does traffic from XR1 that is destined to the loopback interface of XR6 select for the exiting interface?

• A.Interface GigabitElhemet 0/0. The tie breaker of the node index priority is lower and trumps the path cost.
• B.Interface GigabitEthernet 0/1. The tie breaker of the path cost being lower. The node index priority does not impact this selection process.
• C.Interface GigabitEthernet 0/1. The tie breaker of the node index priority is lower and trumps the path cost.
• D.Interface GigabitEthernet 0/0. The tier breaker of the path cost being lower. The node index priority does not impact this selection process.

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Refer to the exhibit. VPN users that are connected to PE routers are facing network issues.
Traffic that originates from CE1 drops before reaching CE2. An engineer finds no outgoing traffic statistics on PE1 and PE2 routers toward CE devices and finds that the PE1 router is running the older software image. Which action must be implemented to resolve the issues?

• A.Enable LDP protocol on PE1 and PE2 routers.
• B.Advertise P1 router loopback on PE1 in OSPF.
• C.Enable CEF-based forwarding on PE1 router.
• D.Advertise PE2 router loopback on PE1 in OSPF.

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Compare different features between OSPFv2 and OSPFv3. Drag and drop the descriptions of OSPF from the left onto the correct OSPF versions on the right.

Correct Answer:

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Refer to the exhibit. A network engineer is configuring router R3 to handle multicast streams, but Host-2 cannot send subscriptions messages to the IPTV source. Which configuration must the engineer apply to router R3 so it passes the IPTV stream to Host-2?

• A.Option B
• B.Option D
• C.Option C
• D.Option A

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What is the difference between a source tree and a shared tree in a multicast environment?

• A.To route traffic from source to receiver a source tree uses a link-state routing protocol and a shared tree uses a distance-vector routing protocol.
• B.A source tree has its root at the source, and a shared tree has its root at a designated rendezvous point.
• C.To stream multicast from source to receiver, a source tree uses PIM-SM and a shared tree uses PIM-DM.
• D.Source trees are the default type for bidirectional PIM, and PIM-DM uses shared trees by default.

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