Nokia Nokia Certifications 4A0-106 Questions & Answers

• Question 111:

  Which of the following about inter-AS model B VPRN is FALSE?

  A. Model B does not require the configuration of VPRN instances on the ASBRs.

  B. The ASBRs exchange data packets that are encapsulated with a transport label and a service label.

  C. The route target advertised in one AS is maintained and used in the remote AS.

  D. The CLI command "configure router bgp enable-inter-as-vpn" is required on the ASBRs.

  Correct Answer: B

• Question 112:

  Click the exhibit.

  

  Which of the following commands produces the output for the inter-AS model B VPRN?

  A. ASBR1# show router 10 bgp routes vpn-ipv4

  B. ASBR1# show router bgp routes

  C. ASBR1# show router bgp routes vpn-ipv4

  D. ASBR1# show router route-table

  Correct Answer: C

• Question 113:

  Click the exhibit.

  

  For the inter-AS model A VPRN. BGP is used as the PE-CE routing protocol. Which of the following statements about the control plane operation is TRUE?

  A. PE1 sends an IPv4 update for prefix 192.168.1.0/27 via MP-BGP to ASBR1.

  B. ASBR1 sends an IPv4 update for prefix 192.168.1.0/27 to ASBR2.

  C. ASBR1 transforms an IPv4 update for prefix 192.168.1.0/27 to a VPN-IPv4 route; allocates VPN label V1 and sends the update to ASBR2.

  D. ASBR2 accepts a VPN-IPv4 update from ASBR1, then sends the update to PE2 via MP-BGP.

  Correct Answer: B

• Question 114:

  Which of the following is NOT a viable option when implementing inter-AS VPRN?

  A. MP-eBGP exchange of VPN-IPv4 routes between ASBRs residing in different autonomous systems.

  B. MP-eBGP exchange of labeled IPv4 routes between route reflectors residing in different autonomous systems.

  C. A VRF-to-VRF connection at the autonomous system border routers.

  D. MP-eBGP exchange of VPN-IPv4 routes between PEs residing in different autonomous systems.

  Correct Answer: B

• Question 115:

  Which of the following about inter-AS model AVPRN is TRUE?

  A. It is the most scalable of the Inter-AS models.

  B. VRF configuration is not required on the ASBRs.

  C. Most routers that support VPRN functionality do not support model A by default.

  D. It is not necessary to run MPLS at the boundary between autonomous systems.

  Correct Answer: D

• Question 116:

  Click the exhibit.

  

  Which of the following about the inter-AS model A VPRN configuration on ASBR1 is TRUE?

  A. The route-distinguisher value must be 64496:10 for successful VPRN operation.

  B. An export policy is not required for successful VPRN operation.

  C. The "family vpn-ipv4" command is required under the BGP configuration for successful VPRN operation.

  D. The neighbor address should be 10.10.10.4 under the BGP configuration for successful VPRN operation.

  E. The VPRN configuration on ASBR1 is correct.

  Correct Answer: E

• Question 117:

  Click the exhibit.

  

  For the inter-AS model A VPRN, which of the following is FALSE when CE2 sends an IP packet to 192.168.1.1?

  A. CE2 forwards an unlabeled IP packet to PE2 via the VPRN interface.

  B. PE2 pushes two labels on the IP packet and label-switches the packet to ASBR2.

  C. ASBR2 pops one label from the IP packet and label-switches it to ASBR1.

  D. ASBR1 pushes two labels on the IP packet and label-switches the packet to PE1.

  Correct Answer: C

• Question 118:

  Click the exhibit.

  

  Router R4 is an Alcatel-Lucent 7750 SR configured for the extranet VPRN network. Which CLI command is executed on router R4 to produce the displayed output?

  A. "show router 10 route-table"

  B. "show router route-table"

  C. "show router 20 route-table"

  D. There is no CLI command that can produce this output on router R4

  Correct Answer: B

• Question 119:

  Which of the following describes the goal of an Extranet VPRN?

  A. To reduce the number of VPRN tunnels required.

  B. To allow routes to be exchanged between all, or selected, sites of one VPRN, and all, or selected, sites of a second VPRN.

  C. To simplify the administration of multiple VPRNs.

  D. To allow network access between the headquarter sites of each VPRN service and a shared VPRN service offered by a third party.

  Correct Answer: B

• Question 120:

  Click the exhibit.

  

  An extranet VPRN is configured on Alcatel-Lucent 7750 SRs. On which router(s) should the displayed configuration be applied?

  A. Router R1

  B. Router R2

  C. Routers R1 and R2

  D. Router R3

  E. Router R4

  Correct Answer: B