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Free 4A0-101 Exam Braindumps
4A0-101 Alcatel-Lucent Interior Routing Protocols and High Availability Questions 33–34 (page: 18)

Updated On: 9-Feb-2026
Page 18 of 37
PDF with 315 Questions

How many bytes make up the system ID in an IS-IS NSAP address on the Alcatel-Lucent 7750 SR?

  1. 4 bytes
  2. 6 bytes
  3. 8 bytes
  4. Variably between 4 and 8 bytes

Answer(s): B



Click the exhibit button.

The OSPF packets shown have been exchanged between two neighbors. What state is the OSPF adjacency in?

  1. The adjacency state is two way because both routers have received a database description packet.
  2. The adjacency is in the exchange state. The next step is to exchange link state request and link state update packets.
  3. The adjacency is in the ex start state. The routers have exchanged database description packets, but still have to negotiate the starting sequence number.
  4. The adjacency state is full. The routers are exchanging database description packets to notify each other that all link state advertisements have been received.

Answer(s): C



In an OSPF Hello packet what fields must match all neighbor routers on the segment? (Choose 3)

  1. Area ID
  2. Hello and Dead Intervals
  3. Stub flag
  4. DR and BDR addresses
  5. The list of neighbors

Answer(s): A,B,C



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



Which of the following best describes the type of packets used by OSPF routers to exchange updates on a point-to-point link?

  1. IP packets sent to an IP multicast address.
  2. TCP packets sent to an IP multicast address.
  3. IP packets sent to an IP unicast address.
  4. UDP packets sent to an IP multicast address.

Answer(s): A



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