Nokia Nokia Certifications 4A0-106 Questions & Answers

• Question 91:

  Click the exhibit.

  

  A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is a BGP/MPLS service provider. Which route is present in PE1's global routing table?

  A. 192.168.10.1

  B. 192.168.20.1

  C. 10.10.10.1

  D. 10.10.10.6

  Correct Answer: D

• Question 92:

  Which of the following about Carrier Supporting Carrier (CSC) VPRN is FALSE?

  A. CSC eliminates the need for customer carriers to build and maintain their own MPLS backbone.

  B. CSC is also known as carrier's carrier or carrier serving carrier.

  C. The customer carrier provides VPN or Internet services to its end-customers.

  D. A CSC VPRN is configured on the customer carrier's CSC-CE routers.

  Correct Answer: D

• Question 93:

  Click the exhibit.

  

  For the Carrier Supporting Carrier (CSC) VPRN, which routes are advertised between CSC-CE1 andCSCPE1?

  A. VPN-IPv4 routes for all PE system addresses in AS 1000

  B. BGP labeled IPv4 routes for all PE system addresses in AS 1000

  C. VPN-IPv4 routes for all PE system addresses in AS 5000

  D. BGP labeled IPv4 routes for all PE system addresses in AS 5000

  Correct Answer: D

• Question 94:

  Which of the following about the control plane in Carrier Supporting Carrier (CSC) VPRN is FALSE?

  A. End-customer routes are populated in the network provider CSC VRF.

  B. The customer carrier does not learn any network provider internal routes.

  C. The network provider learns customer carrier PE system addresses.

  D. Routes exchanged between the customer carrier and the network provider are labeled.

  Correct Answer: A

• Question 95:

  In a Carrier Supporting Carrier (CSC) VPRN, which of the following is a benefit to the network provider?

  A. No need to build and maintain its own backbone.

  B. The solution scales as the number of serviced customer carriers increases.

  C. The solution scales as the number of VPNs offered by the customer carriers increases.

  D. The ability to manage end-customer services.

  Correct Answer: C

• Question 96:

  Click the exhibit.

  

  A Carrier Supporting Carrier (CSC) VPRN is configured on an Alcatel-Lucent 7750 SR for a customer carrier who is an Internet Service Provider (ISP). Which of the following configuration steps is NOT required?

  A. Configuring iBGP sessions between PEs residing in different customer carrier sites,

  B. Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider.

  C. Configuring a CSC VPRN on each CSC-PE with a SAP interface towards the attached CSC-CE.

  D. Configuring an IES service on PE1.

  Correct Answer: C

• Question 97:

  Click the exhibit.

  

  A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is a BGP/MPLS service provider. If CE1 sends an IP packet to 192.168.200.1, which of the following is FALSE?

  A. CE1 forwards the data packet to PE1 via the VPRN 20 interface.

  B. PE1 pushes two labels on the IP packet: a BGP label and an LDP transport label.

  C. CSC-CE1 pops the LDP label and swaps the BGP label.

  D. CSC-PE1 pops the BGP label and pushes a VPN label and an MPLS transport label.

  Correct Answer: B

• Question 98:

  Click the exhibit.

  

  A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is an Internet Service Provider (ISP). Which route is NOT present in PE1's global routing table?

  A. 192.60.100.0

  B. 10.10.10.6

  C. 10.10.10.3

  D. 192.50.1.1

  Correct Answer: C

• Question 99:

  Click the exhibit.

  

  A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is an Internet Service Provider (ISP). If CE1 sends an IP packet to 192.60.100.1, which of the following is FALSE?

  A. PE1 pushes an LDP transport label.

  B. CSC-CE1 pops the LDP label and pushes a BGP label.

  C. CSC-PE1 pops the BGP label and pushes two labels: a VPN label and an MPLS transport label.

  D. CSC-PE2 pops the MPLS label and pushes a BGP label.

  Correct Answer: D

• Question 100:

  For a Carrier Supporting Carrier (CSC) VPRN where the customer carrier is an ISP that provides Internet connectivity to its end-customers, which of the following is FALSE?

  A. All traffic exchanged between end-customers is carried over a single CSC VRF.

  B. Customer carrier PE routers residing in different sites must run eBGP between them to exchange customers' routes.

  C. The customer carrier network can be a pure IP network.

  D. MPLS can be used in the customer carrier network to improve scalability.

  Correct Answer: B