Nokia 4a0-106 practice test

Nokia Virtual Private Routed Networks Exam


Question 1

Which of the following is NOT a viable option when implementing inter-AS VPRN?
A. An MP-eBGP session between route reflectors in different autonomous systems to exchange IPv4
routes.
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B. An MP-eBGP session between ASBRs to exchange labeled IPv4 routes.
C. An eBGP session between ASBRs to exchange IPv4 routes.
D. An MP-eBGP session between ASBRs to exchange VPN-IPv4 routes.

Answer:

A
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Question 2

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

  • A. Model B requires the configuration of back-to-back VRFs between the ASBRs in different autonomous systems.
  • B. Model B is highly scalable because the VPN-IPv4 routes are neither maintained, nor distributed by, the ASBRs.
  • C. There is a dependency between the route target used in different autonomous systems.
  • D. Model B supports the exchange of labeled IPv4 routes between ASBRs.
Answer:

D

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Question 3

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For the inter-AS model B VPRN, which of the following protocols is used to advertise routes between
ASBR1 and ASBR2?

  • A. iBGP
  • B. eBGP
  • C. MP-iBGP
  • D. MP-eBGP
Answer:

D

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Question 4

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The headquarter sites of VPRN 10 and VPRN 20 are part of an extranet VPRN. Which route target(s)
should be imported under the VPRN 10 service on router R1?

  • A. target:65100:1 only
  • B. target:65100:1 and target:65100:2
  • C. target:65100:1 and target:65100:3
  • D. target:65100:1, target:65100:2, and target:65100:3
Answer:

D

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Question 5

Which of the following statements is FALSE when providing Internet access using route leaking
between a VRF and the global routing table?

  • A. It is best used when a single VPN is required to provide Internet access, as well as to maintain VPN connectivity between different customer sites.
  • B. If there is no requirement for the VRF to contain the full Internet routing table, a default route to the Internet gateway router is sufficient.
  • C. Only one interface on the CE is required for both VPN and Internet connectivity.
  • D. The Nokia 7750 SR supports route leaking in full mesh and extranet VPRN topologies only.
Answer:

D

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Question 6

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To enable full spoke-to-spoke connectivity for the CE hub and spoke VPRN, on which router(s) should
the displayed static-route be configured?

  • A. PE1
  • B. CE1
  • C. PE2 and PE3
  • D. CE2 and CE3
Answer:

C

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Question 7

For a Carrier Supporting Carrier (CSC) VPRN where the customer carrier is a BGP/MPLS VPN service
provider, which of the following is TRUE?

  • A. The customer carrier network can be a pure IP network.
  • B. The customer carrier can provide Layer 2 and Layer 3 services to its end-customers.
  • C. If the customer carrier offers VPRN services, PE routers residing in different customer carrier sites must run iBGP between them to exchange IPv4 routes.
  • D. If the customer carrier offers VPRN services, the network provider stores the end-customer routes in its CSC VPRN.
Answer:

B

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Question 8

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

  • A. The customer carrier does not learn any network provider routes.
  • B. The network provider must learn the customer carrier PE and CE system addresses.
  • C. Routes exchanged between CSC-CE and CSC-PE are labeled.
  • D. The customer carrier PE system addresses are populated in the CSC VRF.
Answer:

B

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Question 9

Which of the following statements about Inter-AS model VPRN is TRUE?

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  • A. MP-iBGP is used between PE1 and ASBR1 to exchange VPN-IPv4 routes.
  • B. eBGP is used between ASBR1 and ASBR2 to exchange IPv4 routes.
  • C. MP-eBGP is used between PE1 and PE2 to exchange VPN-IPv4 routes.
  • D. MP-eBGP is used between ASBR1 and ASBR2 to exchange labeled IPv4 routes.
Answer:

D

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Question 10

For the Inter-AS model C VPRN, which of the following is FALSE when an IP packet is sent from
192.1.1.1 to 192.2.1.1?
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  • A. PE1 pushes three labels on the IP packet: a VPN label, a BGP label, and an LDP transport label.
  • B. ASBR1 pops the LDP label, swaps the BGP label and forwards the IP packet to ASBR2.
  • C. ASBR2 swaps the BGP label and pushes an LDP transport label.
  • D. PE2 pops all labels and forwards the unlabeled packet to its destination.
Answer:

B

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