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Q9. Choose the answer that best completes the following sentence. The CE device is typically configured with ___________________________.
A. A single routing protocol for exchanging routes with both the internal customer routers and with the PE
B. MP-BGP to exchange routes with the PE.
C. MPLS and a routing protocol for the exchange of labels and routes with the PE
D. MPLS for exchanging labels with other CE devices
E. A routing protocol for exchanging routes with the internal customer routers and a routing protocol for exchanging routes with the PE
Answer: E
Q10. What mechanism allows routes to be shared between customers in different VPRNs?
A. The routes to be shared are identified by common route targets
B. The routes to be shared are identified by common route distinguishers
C. The routes to be shared are identified by common AS numbers
D. The routes to be shared are identified by common VPN labels
Answer: A
Q11. Which of the following best describes the goal of an Extranet VPRN?
A. Allow routes to be exchanged between all or selected sites of one VPRN and all or selected sites of a second VPRN
B. Allow the service provider to provide multiple VPRNs with Internet access
C. Reduce the number of VPRN tunnels required
D. Simplify the administration of multiple VPRNs
E. Force all traffic in multiple VPRNs to pass through a single device
Answer: A
Q12. The policies shown below from the configuration of an Alcatel-Lucent 7750 SR have been created to implement an Extranet VPRN between the main sites of two separate VPRNs. How should these policies be applied?
A. ample Policy should be applied as an export policy on the PE connected to the main site of Customer 1
B. ample Policy 3 should be applied as an export policy on the PE connected to the main site of Customer 2
C. ample Policy 3 should be applied as an export policy on both PEs connected to the main site of Customer 1 and the main site of Customer 2
D. ample Policy should be applied as an export policy on both PEs connected to the main site of Customer 1 and the main site of Customer 2
E. ample Policy should be applied as an export policy on all PEs connected to sites of Customer 1
Answer: A
Q13. How was standard BGP modified to allow it to carry routing information for VPRNs?
A. By using the MED attribute to carry the OSPF metric.
B. By defining Extended Communities for use as the Route Target
C. By using the Cluster List attribute to carry the network prefix
D. By defining support for the VPN-IPv4 address family
E. By adding an additional field to the BGP Update to carry the VPRN label
Answer: D
Q14. Which of the following statements is true? Choose the best answer.
A. A P router may forward customer packets to their destination without the presence of a route to that destination
B. The ingress PE router may forward customer packets to their destination withoutthE presence of a route to that destination
C. The egress PE router may forward customer packets to their destination without the presence of a route to that destination
D. Any provider core router (P or PE) may forward customer packets to their destination without the presence of a route to that destination
Answer: A
Q15. What is wrong with the configuration shown below?,
A. The VPRN ID must be the same value as is used in the vrf-target command
B. The VPRN ID must be the same value as is used in the route-distinguisher command
C. The router-id command should not be used in this context
D. Thevrf-target command is mandatory
E. There is nothing wrong with this configuration
Answer: E
Q16. In a provider core consisting of 6 PE and 4 P routers, what is the minimum number of BGP sessions required in total for correct operation of VPRN services?
A. 0
B. 5
C. 10
D. 15
E. 45
Answer: D