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Home Alcatel-Lucent 4A0-101

Alcatel-Lucent 4A0-101 Exam Practice Questions (P. 3)

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Question #21
In an OSPF Hello packet, which of the following fields must match for all neighbor routers on the segment? Choose three answers.
  1. A
    Area ID W B.
  2. B
    Hello and Dead intervals PC.
  3. C
    Stub flag
  4. D
    Checksum values
  5. E
    The list of neighbors

Correct Answer:
ABC

Question #22
Click the exhibit button.


The OSPF adjacency between routers R3 and R1 is down. What is the problem?
  1. A
    Area 1 of router R1 should not be configured as a stub.
  2. B
    Router R3 has the incorrect authentication key type.
  3. C
    Router R1 has the incorrect authentication key type.
  4. D
    There is not enough information to tell.

Correct Answer:
C

Question #23
Click the exhibit button.

Given the topology and the show commands, and assuming that router R2 advertises all of its loopbacks into OSPF, what is the correct router R1 configuration?

  1. A
    Option A
  2. B
    Option B
  3. C
    Option C
  4. D
    Option D

Correct Answer:
A

Question #24
In which of the following types of areas does an OSPF router not set the E bit in its Type 1 LSA?
  1. A
    Not so stubby area
  2. B
    Stub area
  3. C
    Backbone area
  4. D
    Normal area

Correct Answer:
B

Question #25
Click the exhibit button.

In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. Which of the following statements regarding the OSPF LSAs in the network is true?
  1. A
    Router R1 generates a type 5 LSA that is flooded through all OSPF areas.
  2. B
    Router R1 generates a type 7 LSA that is flooded through all OSPF areas.
  3. C
    Router R1 generates a type 5 LSA that is flooded through area 1. Router R2 generates a type 7 LSA that is flooded through areas 0 and 2.
  4. D
    Router R1 generates a type 7 LSA that is flooded through area 1. Router R3 generates a type 5 LSA that is flooded through areas 0 and 2.

Correct Answer:
D

Question #26
What is the protocol number for OSPF in the IP header?
  1. A
    OSPF uses TCP, so the protocol number is 6.
  2. B
    OSPF uses UDP, so the protocol number is 17.
  3. C
    OSPF does not use IP.
  4. D
    OSPF has its own protocol number of 89.

Correct Answer:
D

Question #27
Click the exhibit button.

Which of the following would correctly configure routers R2, R3, and R4?




  1. A
    Option A
  2. B
    Option B
  3. C
    Option C
  4. D
    Option D

Correct Answer:
C

Question #28
When are virtual links used in OSPF?
  1. A
    When two areas need to communicate and there is no area 0.
  2. B
    When an area needs to traverse another area to reach area 0.
  3. C
    When two areas are connected to area 0, but there is no direct path between them.
  4. D
    When an area needs to connect directly to another area without using area 0.

Correct Answer:
B

Question #29
Which of the following statements regarding area border routers in an OSPF network is true?
  1. A
    The term backbone router has the same definition as the term area border router.
  2. B
    An OSPF network needs at least one area border router to function.
  3. C
    Area border routers connect the backbone area to other areas in an OSPF network.
  4. D
    By definition, an area border router must perform route summarization between areas.

Correct Answer:
C

Question #30
Which of the following correctly lists the 5 OSPF packet types?
  1. A
    Hello, link state update, link state packet, link State acknowledgement, database description.
  2. B
    Link state update, link state refresh, link state acknowledgement, database description, notification.
  3. C
    Hello, link state refresh, link state update, link state acknowledgement, link state authentication.
  4. D
    Hello, link state update, link state request, link state acknowledgement, database description.

Correct Answer:
D

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