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Nokia OSPF Routing Protocol Certification Exam is a comprehensive exam that covers multiple domains, including OSPF protocol concepts, design principles, implementation strategies, and troubleshooting techniques. 4A0-113 exam comprises 60 multiple-choice questions that need to be completed in 90 minutes. 4A0-113 exam is available in English and Japanese language and can be taken at any Pearson VUE test center worldwide.
NEW QUESTION # 33
Which of the following statements regarding OSPF routing updates on a multi-access network segment is true?
- A. In multi-access networks, a DR and BDR are elected. The DR sends link-state advertisements describing the network.
- B. In multi-access networks, a DR and BDR are elected only if the subnet masks on the router interfaces are less than /30
- C. In multi-access networks, a DR and BDR are elected. To ensure resiliency, both the DR and BDR send link-state advertisements describing the network.
- D. In multi-access networks, a DR and BDR are elected only if there are more than two routers connected to the network segment.
Answer: A
NEW QUESTION # 34
An OSPF router receives an update in which the sequence number, age, and checksum are the same as the entry already in the topological database. What action is taken by the router?
- A. The link state information is regarded as old and nothing is done.
- B. The link state information is not populated in the database and an acknowledgement is sent
- C. The link state information already in the database is overwritten and the age is reset
- D. The link state information is not populated in the database but is forwarded to all neighbors
Answer: B
NEW QUESTION # 35
What are the ways the RID can be created on an Nokia 7750 SR router? (Choose three)
- A. From the system IP address
- B. By using the command "config router ospf rid X.X.X.X"
- C. From the first 32 bits of the chassis MAC address
- D. From the last 32 bits of the chassis MAC address
- E. The loopback IP address
- F. From the highest interface IP address
Answer: A,B,D
NEW QUESTION # 36
What address is used when RIPv2 uses multicast to send its updates?
- A. 224.0.0.9
- B. RIPv2 does not have support for multicast
- C. 224.0.0.6
- D. 224.0.0.5
- E. 224.0.0.10
Answer: A
NEW QUESTION # 37
Click the exhibit button.
Router R2 advertises the network 192.168.3.0/24 to router R1 via OSPF. A route policy has been constructed to discard the route on router R1; however, it is not working. What is the problem?
- A. Router R1 should be configured as an OSPF "asbr".
- B. The policy was likely not "committed" after creation.
- C. This is not possible because OSPF cannot use import policies.
- D. The policy "reject" should be set for import rather than export.
- E. The prefix list reject should be "192.168.3.0/16 exact".
Answer: C
NEW QUESTION # 38
What are the three databases maintained by a Link State Protocol?
- A. Neighbor, adjacency, route table
- B. Topology, routing, forwarding
- C. Neighbor, topology, forwarding
- D. There are only two databases: adjacency and topology
Answer: C
NEW QUESTION # 39
Which of the LSA types stay within an OSPF area and are not exported outside of the area? (Choose all that apply)
- A. Summary Router LSA
- B. Router LSA
- C. Network LSA
- D. Summary Network LSA
Answer: B,C
NEW QUESTION # 40
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?
- A. 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.
- B. Router R1 generates a type 5 LSA that is flooded through all OSPF areas.
- C. Router R1 generates a type 7 LSA that is flooded through all OSPF areas.
- 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.
Answer: D
NEW QUESTION # 41
A static route is created using the command "static-route 2.3.4.0/24 next-hop 1.2.3.4". What is the correct traceroute command to test this static route on an Nokia 7750 SR?
- A. traceroute next-hop 1.2.3.4
- B. traceroute 2.3.4.0/24 next-hop 1.2.3.4
- C. traceroute 2.3.4.1
- D. traceroute does not work on the Nokia 7750 SR
Answer: C
NEW QUESTION # 42
What is the source IP address in an OSPF update?
- A. 224.0.0.6
- B. The system address of the router
- C. The unicast IP address of the interface the update is being sent on.
- D. 224.0.0.5
Answer: C
NEW QUESTION # 43
What is the source IP address in an OSPF update?
- A. The unicast IP address of the interface the update is sent on
- B. 224.0.0.6
- C. 224.0.0.5
- D. The system address of the router.
Answer: A
NEW QUESTION # 44
In an OSPF Hello packet, which of the following fields must match for all neighbor routers on the segment? Choose three answers.
- A. The list of neighbors
- B. Checksum values
- C. Stub flag
- D. Hello and Dead intervals PC.
- E. Area ID W B.
Answer: C,D,E
NEW QUESTION # 45
Which of the following are similarities between OSPF and IS-IS? Choose two answers.
- A. Slow convergence after link failures.
- B. Support hierarchy through the use of areas.
- C. Link state updates sent using layer 3 multicast.
- D. Metric is based on hop count.
- E. Support for CIDR.
Answer: B,E
NEW QUESTION # 46
Which of the following statements best describes an OSPF type 3 LSA?
- A. An OSPF type 3 LSA is an inter-area LSA, generated by the ABR only when route summarization is configured.
- B. An OSPF type 3 LSA is an inter-area LSA, generated by an ASBR to describe external routes.
- C. An OSPF type 3 LSA is an intra-area LSA, generated by the ABR only when route summarization is configured.
- D. An OSPF type 3 LSA is an inter-area LSA, generated by the ABR to describe a route to neighbors outside the area.
Answer: D
NEW QUESTION # 47
Identify two attributes of Distance Vector Protocols: (Choose two)
- A. Use split horizon by default.
- B. Send information about directly connected links to neighbors at periodic intervals.
- C. Maintain multiple databases: neighbor, topology and routing.
- D. Use holddown timers when topologies change to allow for convergence.
Answer: A,D
NEW QUESTION # 48
An operator configures an Nokia 7750 SR with a loopback interface and IPv6 address. The operator then configures a routing policy to redistribute the loopback prefix into OSPFv3. What type of LSA is used to advertise the route to other OSPFv3 routers in the same area?
- A. Inter-Area Prefix LSA
- B. AS External LSA
- C. Network LSA
- D. Router LSA
- E. Intra-Area Prefix LSA
- F. None of the statements are correct.
Answer: B
NEW QUESTION # 49
What command could be used to verify proper configuration of a static route in an Nokia 7750 SR router?
- A. Show route-table
- B. Show router routing-table
- C. Show static
- D. Show router route-table
Answer: D
NEW QUESTION # 50
From the list below select the statements that describe the behavior of link state information aging. (Choose 2)
- A. The age for newly created link state information is set to 0 for OSPF and 1200 for IS-IS
- 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 is incremented or decremented only as it is held in the topological database and not as it is flooded router to router.
Answer: A,C
NEW QUESTION # 51
Click on the exhibit.
In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. There are no stub or NSSA areas. Which of the following regarding LSAs is TRUE?
- A. Router R7 will receive Type 5 LSAs advertised by router R1.
- B. Router R3 will advertise Type 7 LSAs to Area 0 and Area 2.
- C. Router R2 will receive Type 5 and Type 7 LSAs.
- D. Only routers R2 and R3 receive Type 5 LSAs advertised by router R1.
Answer: A
NEW QUESTION # 52
What causes an adjacency to change from "Init" to "Two Way"?
- A. When a Link State Update is received in response to a Link State Request
- B. When a Link State Acknowledgement is received in response to a Link State Update
- C. When OSPF neighbors exchange Database Descriptor packets
- D. When a router receives a Hello packet from a neighbor that contains its router id in the neighbor list
Answer: D
NEW QUESTION # 53
In an IP datagram, which field identifies the receiving application
- A. The port field of the transport layer header
- B. The protocol field of the network layer header
- C. The protocol field of the transport layer header
- D. The port field of the network layer address
Answer: A
NEW QUESTION # 54
What are some of the characteristics of Nokia's implementation of non-stop routing? (Choose two)
- A. No protocol extensions required
- B. Only supported by OSPF and IS-IS
- C. Transparent to routing neighbors
- D. Uses Graceful Restart to inter-operate with other vendors
Answer: A,C
NEW QUESTION # 55
Click the exhibit button.
If router R2 redistributes the IS-IS route to 192.168.3.0/24 into OSPF, router R3 will receive two routes to 192.168.3.0/24. What will be the preference of these two routes? Assume that all IS-IS routers are L1/L2 capable and are in the same are a. Choose two answers.
- A. The IS-IS Level 1 external preference
- B. The OSPF internal preference
- C. The IS-IS Level 1 internal preference
- D. The IS-IS Level 2 internal preference
- E. The IS-IS Level 2 external preference
- F. The OSPF external preference
Answer: C,F
NEW QUESTION # 56
NSSA LSA packets are what type within an NSSA area, and are converted to what other type at the ABR?
- A. They are type 5 within the area and converted to type 3 at the ABR
- B. They are type 7 within the area and are not modified at the ABR
- C. They are type 7 within the area and converted to type 5 at the ABR
- D. They are type 5 within the area and are not modified at the ABR
Answer: C
NEW QUESTION # 57
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