Nokia 4A0-106 Online Practice Questions and Exam Preparation

Nokia 4A0-106 Online Questions & Answers

• Question 41:

  When would it be appropriate to use the as-override command?

  

  A. When sites of different VPRN customers use the same BGP AS number
  B. When sites of the same VPRN customer use the same BGP AS number
  C. When sites of different VPRN customers use different BGP AS numbers
  D. When sites of the same VPRN customer use different BGP AS numbers
  E. When the customer site AS number is the same as the provider AS number
  B. When sites of the same VPRN customer use the same BGP AS number

• Question 42:

  For Carrier Supporting Carrier (CSC) VPRN, which of the following is NOT applicable to both types of customer carriers: BGP/MPLS service providers and Internet service providers?

  A. eBGP is used for route and label exchange between CSC-CE and CSC-PE routers.
  B. iBGP can be used to distribute routes between CSC-CE and PE routers.
  C. MP-iBGP is used to advertise routes between the CSC-PE routers.
  D. MP-iBGP is used to advertise end-customer and Internet routes directly between the PE routers.
  D. MP-iBGP is used to advertise end-customer and Internet routes directly between the PE routers.

• Question 43:

  In a VPRN the PE device is configured to run which of the following protocols? (Choose three.)

  A. MP-BGP for exchanging customer routes with other PEs
  B. A routing protocol for exchanging customer routes with the CE
  C. MPLS for exchanging labels with other provider core devices
  D. MPLS for exchanging labels with the CE devices
  E. Targeted LDP for exchanging VPRN labels with other PE devices
  F. A label signaling protocol for defining transport tunnels between PE and CE devices
  A. MP-BGP for exchanging customer routes with other PEs
  B. A routing protocol for exchanging customer routes with the CE
  C. MPLS for exchanging labels with other provider core devices

• Question 44:

  Click the exhibit.

  

  The headquarter sites of VPRN 10 and VPRN 20 are part of an extranet VPRN. Which route targets should be exported under the VPRN 20 service on router R1?

  A. Target:65100:2 and target:65100:3
  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
  A. Target:65100:2 and target:65100:3

• Question 45:

  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 without the 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
  A. A P router may forward customer packets to their destination without the presence of a route to that destination

• Question 46:

  In inter-AS model C VPRN, which of the following about the command "advertise-label ipv4" is TRUE?

  A. This command is required on all PE routers to distribute labeled IPv4 routes directly to PEs in remote AS.
  B. This command is required on the ASBRs to exchange labeled IPv4 routes between the ASs.
  C. This command is required on the route reflectors to exchange customer routes between ASs as labeled IPv4 routes.
  D. This command is required on all PE routers to distribute labeled IPv4 routes to connected CEs.
  B. This command is required on the ASBRs to exchange labeled IPv4 routes between the ASs.

• Question 47:

  What operation does a P device perform when it receives a labeled packet for a VPRN service?

  A. It forwards the packet based on the label signaled by MP-BGP.
  B. It decrements the TTL and forwards the packet based on the inner label.
  C. It swaps the outer label then forwards the packet.
  D. The P router does not perform any operations on labeled packets.
  C. It swaps the outer label then forwards the packet.

• Question 48:

  In a VPRN that uses MPLS transport tunnels, which of the following statements about P devices is TRUE?

  A. P devices participate in service provider core routing.
  B. P devices are not required to be MPLS-enabled.
  C. P devices must be aware of the VPRNs.
  D. P devices must support MP-BGP.
  A. P devices participate in service provider core routing.

• Question 49:

  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
  E. A routing protocol for exchanging routes with the internal customer routers and a routing protocol for exchanging routes with the PE

• Question 50:

  Which of the following about scaling techniques for route reflectors is FALSE?

  A. Logical Partitioning of route reflectors works best when PEs are partitioned to support different VPRNs.
  B. Logical Partitioning of route reflectors is simple and scalable, but requires more hardware.
  C. Filtering at route reflectors requires either inbound filtering at the route reflector or outbound filtering at the PE routers.
  D. Filtering at route reflectors allows the route reflector to filter routes received from PEs and only accept routes with a certain route distinguisher.
  D. Filtering at route reflectors allows the route reflector to filter routes received from PEs and only accept routes with a certain route distinguisher.