Nokia 4A0-106 Online Practice Questions and Exam Preparation

Nokia 4A0-106 Online Questions & Answers

• Question 61:

  What are the two primary problems the service provider must consider when providing traditional Layer 3 VPN services using only a single common routing table in the provider core? (Choose two)

  A. Memory exhaustion in the provider core
  B. Route leaking between the customer networks
  C. CPU utilization for route processing
  D. Unwanted packet forwarding between customer networks
  B. Route leaking between the customer networks
  D. Unwanted packet forwarding between customer networks

• Question 62:

  When does a router add a Route Target to a route?

  A. When the P receives the route from the PE.
  B. When the PE populates the route received from the CE into the VRF.
  C. When the PE propagates the route to the CE.
  D. When the PE exports the route from the VRF into the MP-BGP table.
  D. When the PE exports the route from the VRF into the MP-BGP table.

• Question 63:

  Where are VPN-IPv4 addresses used in a VPRN?

  A. In the routing updates exchanged from CE to PE
  B. In the routing updates exchanged from PE to PE
  C. In the routing updates exchanged from P to PE
  D. In customer packets as they traverse the provider core
  E. In all route tables of the VPRN control plane
  B. In the routing updates exchanged from PE to PE

• Question 64:

  If Route Reflector 1 (RR1) is used for Internet routes, and Route Reflector 2 (RR2) is used for VPN routes, which of the following is TRUE?

  A. BGP sessions established between RR2 and the PEs support IPv4 and VPN-IPv4 address families.
  B. BGP sessions established between RR1 and the PEs support the IPv4 address family only.
  C. BGP sessions established between RR1 and the PEs support IPv4 and VPN-IPv4 address families.
  D. BGP sessions established between RR2 and the PEs support the IPv4 address family only.
  B. BGP sessions established between RR1 and the PEs support the IPv4 address family only.

• Question 65:

  What are the main functions of a Layer 3 VPN? (Choose three).

  A. Distributing customer routing information between sites
  B. Forwarding customer data packets
  C. Providing an integrated billing solution
  D. Maintaining separation between distinct customer networks
  E. Allowing the implementation of Layer 3 devices in the provider core
  A. Distributing customer routing information between sites
  B. Forwarding customer data packets
  D. Maintaining separation between distinct customer networks

• Question 66:

  An SDP has been configured for a VPRN service using an existing MPLS LSP and the configuration shown below. Which of the statements below is true about the configuration on an Alcatel-Lucent 7750 SR?

  A. The configuration is incomplete as the uto-bind command is missing
  B. The configuration is incomplete as the ignaling off command is missing
  C. The configuration is incorrect as VPRN service does not support spoke-sdp configuration using MPLS LSPs
  D. The configuration is incorrect as Line 8 should be poke-sdp 42 mpls create
  E. The configuration is complete and correct
  B. The configuration is incomplete as the ignaling off command is missing

• Question 67:

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

• Question 68:

  What operation is performed by a P device on the label signaled by MP-BGP when it receives a labeled packet for a VPRN service?

  A. It will label switch the packet based on this label
  B. It will decrement the TTL and label switch the packet based on this label
  C. It will SWAP the label for a new label and then label switch the packet
  D. The P router does not perform any operation on this label
  D. The P router does not perform any operation on this label

• Question 69:

  Click the exhibit.

  

  For the inter-AS model A VPRN shown, which of the following about the route advertisement of 192.168.1.0/27 is FALSE?

  A. PE1 advertises 64496:1:192.168.1.0/27 route update to ASBR1.
  B. PE2 advertises 192.168.1.0/27 route update to CE2.
  C. ASBR1 advertises 64496:1:192.168.1.0/27 route update to ASBR2.
  D. ASBR2 advertises 64497:1:192.168.1.0/27 route update to PE2.
  C. ASBR1 advertises 64496:1:192.168.1.0/27 route update to ASBR2.

• Question 70:

  When an Alcatel-Lucent 7750 SR receives a BGP update containing an AS-Path loop, what is the default action?

  

  A. The update is accepted and the route installed in the route table.
  B. The update is accepted but the route will not be installed in the route table
  C. The update is rejected
  D. The peer session is dropped
  A. The update is accepted and the route installed in the route table.