Nokia Nokia Certifications 4A0-106 Questions & Answers

• Question 51:

  Click the exhibit.

  

  When configuring the double lookup functionality, which configuration forces the global routing table to be consulted for any packet matching the VPRN default route?

  A. A

  B. B

  C. C

  D. D

  Correct Answer: A

• Question 52:

  Click the exhibit.

  

  How many route targets and route distinguishers are required to implement the extranet VPRN?

  A. Three route targets and three route distinguishers

  B. Five route targets and three route distinguishers

  C. Three route targets and two route distinguishers

  D. Five route targets and two route distinguishers

  Correct Answer: C

• Question 53:

  Which of the following about the configuration of BGP Site of Origin (SoO) is TRUE?

  A. Each PE must implement a policy to apply a unique SoO attribute to the set of routes received from each customer site.

  B. A different BGP extended community is used on each PE that connects to a single site.

  C. An import policy on the PE rejects a route if the attached SoO matches the configured value.

  D. Import and export policies are applied on the PEs under the global BGP context.

  Correct Answer: A

• Question 54:

  Click the exhibit.

  

  Assuming that the as-override command is used, what is the most likely location of prefix 10.1.2.0/24?

  A. The prefix is located in an Autonomous System directly connected to this router.

  B. There is a single Autonomous System between the local AS and the AS that originated the prefix.

  C. There are two Autonomous Systems between the local AS and the AS that originated the prefix.

  D. The prefix is located in Autonomous System 65100.

  Correct Answer: B

• Question 55:

  Based on the VPRN BGP decision process, which of the following routes is selected first if the command "PE1>config>service>vprn> bgp best-path-selection as-path-ignore" is executed?

  A. The route learned from an eBGP peer.

  B. The route with the lowest Origin.

  C. The route with the lowest originator ID or BGP Identifier.

  D. The route with the shortest AS path.

  Correct Answer: B

• Question 56:

  In a VPRN that uses MPLS transport tunnels, which of the following is NOT configured on the PE device?

  A. MP-BGP for exchanging customer routes with other PEs.

  B. A routing protocol for exchanging customer routes with the CE.

  C. A label signaling protocol for defining transport tunnels between the PE and CE.

  D. MPLS for exchanging labels with other provider core devices.

  Correct Answer: C

• Question 57:

  Click the exhibit.

  

  Based on the displayed configuration, which routes does PE3 place in the VPRN 10 routing table?

  A. The routes learned from CE3 and PE1.

  B. The route learned from CE3 only.

  C. The routes learned from PE1 and PE2.

  D. The routes learned from CE3 and PE2.

  Correct Answer: A

• Question 58:

  A service provider core consists of 6 PE and 4 P routers. Assuming route reflection is not used, how many internal BGP sessions are required in the service provider network for a correct operation of VPRN services?

  A. 1

  B. 5

  C. 15

  D. 30

  E. 45

  Correct Answer: C

• Question 59:

  Click the exhibit.

  

  What is wrong with the VPRN configuration applied on this Alcatel-Lucent 7750 SR?

  A. The VPRN ID must match the value used in the vrf-target command.

  B. The VPRN ID must match the value used in the route-distinguisher command.

  C. The router-id command should not be used in this context.

  D. The "no shutdown" command must be configured for the VPRN to be operationally UP.

  Correct Answer: D

• Question 60:

  On a PE router, the VRF table for VPRN 10 contains: one local route, two BGP routes learned from a local CE, and three tunneled routes learned from a remote site. If we execute the command "configure service vprn 10 maximum-routes 2 log-only" on this PE router, how many routes are expected to be in the VRF?

  A. Five routes: the local route, the two BGP routes learned from the local CE, and two tunneled routes.

  B. Six routes: the local route, the two BGP routes learned from the local CE, and three tunneled routes.

  C. Two routes: the local route and one tunneled route.

  D. Three routes: the local route and two tunneled routes.

  E. Two routes: the local route and one BGP route learned from the local CE.

  Correct Answer: B