Free 4A0-C01 Exam Braindumps (page: 76)

Page 76 of 212

If the destination IP address of a received unlabeled packet is successfully matched in the FIB, which of the following statements are true? Choose two answers.

  1. A PUSH label stack operation must be performed.
  2. The outgoing interface and next-hop address will be determined from the FI
  3. The packet can be forwarded as a labeled or unlabeled packet.
  4. A POP label stack operation may be performed.

Answer(s): B,C



Which of the following statements regarding OSPF routing updates on a point-to-point link is true?

  1. On a point-to-point link, there is no need for a DR and BDR election; all routing updates are sent to 224.0.0.5.
  2. On a point-to-point link, a DR and BDR are elected. The DR sends link-state advertisements describing the network.
  3. On a point-to-point link, a DR and BDR are elected. To ensure resiliency, both the DR and BDR send link-state advertisements describing the network.
  4. On a point-to-point link, there is no need for a DR and BDR election. All routing updates are sent to the unicast address of the neighbor's interface.

Answer(s): A



When IS-IS is electing a DIS, what is used as the tie breaker on an Alcatel-Lucent 7750 SR, if the priorities are the same?

  1. The system ID
  2. The loopback address
  3. The sequence number of the Hello packet
  4. The device that first initiated communication becomes the DIS
  5. The highest interface MAC address

Answer(s): E



When a router performs the SPF calculation, which router is used as the root of the shortest path tree?

  1. The router with the least number of links.
  2. The router with the lowest router ID.
  3. The router's closest neighbor.
  4. The router doing the calculation.

Answer(s): D



Page 76 of 212



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