4A0-101 by Alcatel-Lucent Valid Free Exam Practice Test

Question 1

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

A. If priorities are the same, the DR is chosen based on the highest RI B. The router with the lowest priority is the DR. C. If priorities are the same, the DR is chosen based on the lowest RID. D. The router with the highest priority is the DR.

Correct Answer: A,D

Question 2

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

A. 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. B. 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. C. 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. D. On a point-to-point link, a DR and BDR are elected. The DR sends link-state advertisements describing the network.

Correct Answer: C

Question 3

Click on the exhibit.

Router R1 learns the network 192.168.3.0/24 from IS-IS. Given the OSPF configuration
shown, why isn't the 192.168.3.0/24 route in router R3's route table?

A. The interface between routers R1 and R3 must be in OSPF area 0. B. The route policy should say "from protocol isis" instead of "from protocol direct". C. The ASBR configuration should be removed. D. The route policy should be applied as an import policy.

Correct Answer: B

Question 4

Which of the following best describes the function of an OSPF Type 4 LSA?

A. A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the backbone area to provide routing information. B. A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the stub area to provide routing information. C. A Type 4 LSA is originated by an ASBR to describe a route to itself to routers outside the area. D. A Type 4 LSA is originated by an ABR to describe a route to an ASBR to routers outside the area.

Correct Answer: D

Question 5

Which of the following features are supported by IS-IS? Choose three answers.

A. PDU authentication. B. Use of Bellman-Ford routing algorithm. C. Classless routing. D. Updates sent as layer 3 multicast. E. The ability to customize the link cost metric.

Correct Answer: A,C,E

Question 6

What are the three databases maintained by a Link State Protocol?

A. There are only two databases: adjacency and topology B. Neighbor, topology, forwarding C. Neighbor, adjacency, route table D. Topology, routing, forwarding

Correct Answer: B

Question 7

Which of the following statements regarding the IS-IS CSNP is false?

A. CSNPs are advertised after an adjacency is formed with another router. B. There are two types of CSNPs: Level 1 and Level 2. C. CSNPs are advertised before an adjacency is formed with another router. D. CSNPs are used to maintain consistency in the link state database.

Correct Answer: C

Question 8

Click the exhibit button.

If router R2 redistributes the IS-IS route to 192.168.3.0/24 into OSPF, router R3 preference of these two routes? Choose two answers.

A. The IS-IS Level 1 internal preference B. The IS-IS Level 2 external preference C. The OSPF external preference D. The IS-IS Level 1 external preference E. The OSPF internal preference F. The IS-IS Level 2 internal preference

Correct Answer: A,C

Question 9

Which function or component of the Alcatel-Lucent 7750 SR is in charge of supporting dynamic routing protocols and constructing the routing table?

A. FIB B. SPF C. CPM D. IOM

Correct Answer: C

Question 10

A router sets the E bit in the flags of its Type 1 LSA. What does this indicate?

A. The router's interface is in a stub area. B. The router is at the end of a virtual link. C. The router is an ASBR. D. The router is an ABR.

Correct Answer: C

Question 11

How many databases does a Link State routing protocol use?

A. One B. Three C. Four D. Two

Correct Answer: B

Question 12

Click on the exhibit.

OSPF router R2 has both point-to-point and broadcast interfaces and it is not a DR for any interfaces. Router R2 detects the link failure between itself and router R1.
Which of the following is correct?

A. Router R2 sends an update to 224.0.0.5 on its broadcast and point-to-point interfaces. The DR does not send any updates. B. Router R2 sends an update to 244.0.0.5 on its point-to-point interfaces. The DR sends an update to 224.0.0.6 on the broadcast network. C. Router R2 sends an update to 224.0.0.5 out its point-to-point interfaces and an update to 224.0.0.6 out its broadcast interface. The DR sends updates to 224.0.0.5 on the broadcast network. D. Router R2 sends an update to 224.0.0.6 out its point-to-point interfaces and an update to 224.0.0.5 out its broadcast interface. The DR sends an update to 224.0.0.6 on the broadcast networks.

Correct Answer: C

Question 13

From the list below select the statements that describe the behavior of link state information aging. (Choose 2)

A. The age is incremented or decremented only as it is held in the topological database and not as it is flooded router to router. B. The age for newly created link state information is set to 1200 for OSPF and 0 for IS-IS C. The age is incremented or decremented as it is flooded from router to router and as it is held in the topological database. D. The age for newly created link state information is set to 0 for OSPF and 1200 for IS-IS

Correct Answer: C,D

Alcatel-Lucent Interior Routing Protocols and High Availability - 4A0-101 Exam Practice Test