Alcatel-Lucent 4A0-101 Exam
4A0-101 Alcatel-Lucent Interior Routing Protocols and High Availability (Page 15 )

Updated On: 1-Feb-2026

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



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



What type of OSPF router generates a type 2 LSA?

  1. Area Border Router
  2. Autonomous System Boundary Router
  3. Designated Router
  4. All routers within an OSPF area.

Answer(s): C



What is the default priority value used for electing the DR on an Alcatel-Lucent 7750 SR running OSPF on an Ethernet?

  1. Priority of 0
  2. Priority of 1
  3. Priority of 64
  4. Priority of 255

Answer(s): B



Which of the following statements regarding the election of the designated router (DR) by OSPF routers are true? (Choose two)

  1. The router with the lowest priority is the DR.
  2. The router with the highest priority is the DR.
  3. If priorities are the same, the DR is chosen based on the lowest RID.
  4. If priorities are the same, the DR is chosen based on the highest RI

Answer(s): B,D



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