300-410 Practice Test

300-410 Practice Test practice questions, page 18 of 25, with answer review and explanations.

Question 86

Which protocol is used to determine the NBMA address on the other end of a tunnel when mGRE is used?

  1. NHRP
  2. IPsec
  3. MP-BGP
  4. OSPF

Question 87

A DMVPN single hub topology is using IPsec + mGRE with OSPF. What should be configured on the hub to ensure it will be the designated router?

  1. route map to set the metrics of learned routes to 110
  2. tunnel interface of the hub with ip nhrp ospf dr
  3. OSPF priority to 0
  4. OSPF priority greater than 1

Question 88

What are two purposes of using IPv4 and VPNv4 address-family configurations in a Layer 3 MPLS VPN? (Choose two.)

  1. RD is prepended to the IPv4 route to make it unique.
  2. The VPNv4 address consists of a 64-bit route distinguisher that is prepended to the IPv4 prefix.
  3. MP-BGP is used to allow overlapping IPv4 addresses between customers to advertise through the network.
  4. The IPv4 address is needed to tag the MPLS label.
  5. The VPNv4 address is used to advertise the MPLS VPN label.

Question 89

What are two functions of MPLS Layer 3 VPNs? (Choose two.)

  1. It is used for transparent point-to-multipoint connectivity between Ethernet links/sites.
  2. A packet with node segment ID is forwarded along with shortest path to destination.
  3. Customer traffic is encapsulated in a VPN label when it is forwarded in MPLS network.
  4. BGP is used for signaling customer VPNv4 routes between PE nodes.
  5. LDP and BGP can be used for Pseudowire signaling.

Question 90

What are two MPLS label characteristics? (Choose two.)

  1. The label edge router swaps labels on the received packets.
  2. Labels are imposed in packets after the Layer 3 header.
  3. LDP uses TCP for reliable delivery of information.
  4. An MPLS label is a short identifier that identifies a forwarding equivalence class.
  5. A maximum of two labels can be imposed on an MPLS packet.