Free 4A0-C02 Exam Braindumps (page: 10)

Page 10 of 20

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?

  1. PE1 sends an IPv4 update for prefix 192.168.1.0/27 via MP-BGP to ASBR1.
  2. ASBR1 sends an IPv4 update for prefix 192.168.1.0/27 ASBR2.
  3. ASBR1 transforms an IPv4 update for prefix 192.168.1.0/27 to a VPN-IPv4 route and allocates VPN label V1 and sends the update to ASBR2.
  4. ASBR2 accepts a VPN-IPv4 update from ASBR1, then sends the update to PE2 via MP-BGP.

Answer(s): B



How was standard BGP modified to allow it to carry routing information for VPRNs?

  1. By using the MED attribute to carry the OSPF metric
  2. By adding an additional field to the BGP Update to carry the transport label
  3. By using the Cluster List attribute to carry the network prefix
  4. By defining support for the VPN-IPv4 address family

Answer(s): D



Which of the following about a Nokia 7750 SR MP-BGP update is FALSE? Assume default behavior.

  1. An MP-BGP update carries an MPLS label that is used as the service label for a VPRN.
  2. There can be multiple Route Targets per route in an MP-BGP update.
  3. There can only be one Route Distinguisher per route in an MP-BGP update.
  4. On a specific PE, the MP-BGP updates for prefixes from a single VPRN carry different labels.
  5. Traditional BGP attributes and MP-BGP attributes are present in an MP-BGP update.

Answer(s): D



Which of the following statements about assigning one Route Distinguisher per VPN is TRUE?

  1. This approach is recommended when multiple sites advertise the same prefix.
  2. This approach limits the opportunities for load balancing.
  3. This approach requires additional memory on the PEs to store more routes.
  4. This approach is recommended for extranet VPN.

Answer(s): B



Page 10 of 20



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