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Home Alcatel-Lucent 4A0-101

Alcatel-Lucent 4A0-101 Exam Practice Questions (P. 2)

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Question #11
Click the exhibit button.

What triggers convergence of the routing protocol when the link between switch 1 and switch 2 goes down?
  1. A
    Convergence is triggered when the adjacency between routers R1 and R2 drops as a result of Hello timeouts. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.
  2. B
    Convergence is triggered when the physical interfaces between routers R1 and R2 go down. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.
  3. C
    Convergence will not be triggered because switches cannot run routing protocols between them.
  4. D
    Convergence is triggered when the switches notify the routers about the link state information. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged
  5. E
    Convergence is triggered when an LSA is sent from router R1 to router R2 to indicate that the link is down. At this point, both routers R1 and R2 re-compute

Correct Answer:
A

Question #12
What are the default Hello and Dead timer intervals for OSPF on the Alcatel-Lucent 7750 SR?
  1. A
    5 and 15 seconds
  2. B
    10 and 30 seconds
  3. C
    5 and 20 seconds
  4. D
    10 and 40 seconds

Correct Answer:
D

Question #13
What causes an adjacency to change from down to two ways?
  1. A
    When a link state update is received in response to a link state request.
  2. B
    When a router receives a Hello packet that contains its own router ID in the neighbor list from a neighbor.
  3. C
    When a router receives a database description packet from a neighbor.
  4. D
    When a link state acknowledgement is received in response to a link state update.

Correct Answer:
B

Question #14
Click the exhibit button.

In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. Assuming that there are no stub networks, which of the following statements regarding type 4 LSA generation is true?
  1. A
    Router R1 generates a type 4 LSA that is flooded to areas 0, 1, and 2.
  2. B
    Router R3 generates a type 4 LSA that is flooded to areas 0, 1, and 2.
  3. C
    Router R3 generates a type 4 LSA that is flooded to areas 0 and 2.
  4. D
    Router R3 generates a type 4 LSA that is flooded to area 0, and router R6 generates a type 4 LSA that is flooded to area 2.

Correct Answer:
D

Question #15
Which of the following commands can be used to display the number of SPF computations that have been performed on a router?
  1. A
    show router ospf area <area-id>
  2. B
    show router ospf neighbor
  3. C
    show router ospf interface
  4. D
    show router ospf status

Correct Answer:
A

Question #16
Which of the following statements describe the major features of OSPF? Choose two answers.
  1. A
    Fast reroute capability
  2. B
    Control traffic prioritization
  3. C
    Route redistribution
  4. D
    Traffic engineering extensions
  5. E
    Cut through forwarding

Correct Answer:
CD

Question #17
Click the exhibit button.

What can you deduce from the show command on router R6?
  1. A
    The router R6 interface is in a multi-access segment. It is neither the DR nor the BDR for the segment. The DR for this segment would be the router with router ID 10.10.10.5.
  2. B
    The router R6 interface is in a multi-access segment. It is neither the DR nor the BDR for the segment; however, this command does not indicate whether 10.10.10.3 or 10.10.10.5 is the DR or BDR.
  3. C
    The router R6 interface is in a multi-access segment. It is the BDR, which is why it is not adjacent to the other routers.
  4. D
    The router R6 interface is in a multi-access segment. It is neither the DR nor the BDR for the segment. The DR for this segment would be the router with router ID 10.10.10.3.

Correct Answer:
B

Question #18
Click the exhibit button.

In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. How many type 4 LSAs will be present in the network?
  1. A
    One.
  2. B
    One for each of the routers in area 0
  3. C
    One for each of the external routes exported by router R1.
  4. D
    Type 4 LSAs are not generated in this network topology.

Correct Answer:
D

Question #19
Which of the following conditions will prevent an OSPF adjacency from reaching the full state? Choose three answers.
  1. A
    MTU mismatch
  2. B
    Incorrect subnet mask
  3. C
    System interface not included in OSPF
  4. D
    Area ID not the same
  5. E
    Different metric set on each end of the link
  6. F
    Router ID not defined

Correct Answer:
ABD

Question #20
Click the exhibit button.

The following command sequence is executed on router R2:
✑ A: R2# configure router ospf router-id 10.10.10.99
✑ A: R2# configure router router-id 10.10.10.66
On router R1, what router ID appears for router R2 directly after these commands are executed?
  1. A
    10.10.10.99
  2. B
    10.10.10.66
  3. C
    10.10.10.2
  4. D
    10.10.10.1

Correct Answer:
C

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