Ultimate Guide to Prepare 4A0-113 with Accurate PDF Questions [Oct 24, 2021]
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Nokia 4A0-113 Exam Syllabus Topics:
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NEW QUESTION 47
Click the exhibit button.
What triggers convergence of the routing protocol when the link between switch 1 and switch 2 goes down?
- 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.
- B. 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
- C. 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 their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.
- D. 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.
- E. Convergence will not be triggered because switches cannot run routing protocols between them.
Answer: A
NEW QUESTION 48
What are the types of networks supported on an Nokia 7750 SR for OSPF? (Choose 2)
- A. Non-Broadcast Multi-Access
- B. Point-to-Multipoint
- C. Point-to-Point
- D. Broadcast
Answer: C,D
NEW QUESTION 49
In an OSPF environment, what must a router receive after it sends out an update?
- A. The router must receive a Hello
- B. The router must receive a Link State Packet
- C. The router must receive an acknowledgment
- D. The router must receive a new sequence number
Answer: C
NEW QUESTION 50
NSSA LSA packets are what type within an NSSA area, and are converted to what other type at the ABR?
- A. They are type 7 within the area and converted to type 5 at the ABR
- B. They are type 5 within the area and are not modified at the ABR
- C. They are type 5 within the area and converted to type 3 at the ABR
- D. They are type 7 within the area and are not modified at the ABR
Answer: A
NEW QUESTION 51
When are virtual links used in OSPF?
- A. When two areas need to communicate and there is no area 0.
- B. When an area needs to connect directly to another area without using area 0.
- C. When two areas are connected to area 0, but there is no direct path between them.
- D. When an area needs to traverse another area to reach area 0.
Answer: D
NEW QUESTION 52
How many databases does a Link State routing protocol use?
- A. Two
- B. Three
- C. One
- D. Four
Answer: B
NEW QUESTION 53
Click the exhibit button.
The OSPF packets shown have been exchanged between two neighbors. What state is the OSPF adjacency in?
- A. The adjacency state is two way because both routers have received a database description packet.
- B. The adjacency is in the ex start state. The routers have exchanged database description packets, but still have to negotiate the starting sequence number.
- C. The adjacency state is full. The routers are exchanging database description packets to notify each other that all link state advertisements have been received.
- D. The adjacency is in the exchange state. The next step is to exchange link state request and link state update packets.
Answer: B
NEW QUESTION 54
Which of the following statements regarding area border routers in an OSPF network is true?
- A. By definition, an area border router must perform route summarization between areas.
- B. Area border routers connect the backbone area to other areas in an OSPF network.
- C. An OSPF network needs at least one area border router to function.
- D. The term backbone router has the same definition as the term area border router.
Answer: B
NEW QUESTION 55
In which of the following types of areas does an OSPF router not set the E bit in its Type 1 LSA?
- A. Stub area
- B. Not so stubby area
- C. Normal area
- D. Backbone area
Answer: A
NEW QUESTION 56
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?
- A. Type 4 LSAs are not generated in this network topology.
- B. One for each of the external routes exported by router R1.
- C. One for each of the routers in area 0
- D. One.
Answer: A
NEW QUESTION 57
What are the ways the RID can be created on an Nokia 7750 SR router? (Choose three)
- A. From the first 32 bits of the chassis MAC address
- B. From the system IP address
- C. The loopback IP address
- D. From the highest interface IP address
- E. From the last 32 bits of the chassis MAC address
- F. By using the command "config router ospf rid X.X.X.X"
Answer: B,E,F
NEW QUESTION 58
Exhibit
Given the two configurations shown, identify the two incorrect statements below: (Choose two)
- A. The interface type settings differ, but OSPF will still operate correctly.
- B. Metric values differ, but this does not prevent OSPF operation.
- C. The system interface is missing in one configuration so OSPF will not operate correctly.
- D. Both routers will generate OSPF Hello packets.
Answer: A,C
NEW QUESTION 59
Which of the following correctly lists the 5 OSPF packet types?
- A. Hello, link state refresh, link state update, link state acknowledgement, link state authentication.
- B. Link state update, link state refresh, link state acknowledgement, database description, notification.
- C. Hello, link state update, link state packet, link State acknowledgement, database description.
- D. Hello, link state update, link state request, link state acknowledgement, database description.
Answer: D
NEW QUESTION 60
An interface is configured on a router for OSPF but the command "show router ospf neighbor" does not show any neighbors. Which of the following is NOT a possible cause?
- A. The interface facing the neighbor is down.
- B. The interface is included in a different area than the neighbor router.
- C. An OSPF database description packet has not been received from the neighbor.
- D. The router has not received a valid OSPF Hello packet from its neighbor.
Answer: C
NEW QUESTION 61
What command will show the OSPF neighbors, and their status on the Nokia 7750 SR?
- A. Show router ospf adjacency
- B. Show ospf adjacency
- C. Show router ospf neighbors
- D. Show ospf neighbors
Answer: C
NEW QUESTION 62
What best describes the type of packets used by OSPF routers to exchange updates on a pointto-point link?
- A. UDP packets sent to an IP multicast address.
- B. IP packets sent to an IP multicast address.
- C. Ethernet frames sent to an Ethernet multicast address.
- D. IP packets sent to an IP unicast address.
Answer: B
NEW QUESTION 63
Click on the exhibit.
The route table on router R2 shows the system address of router R5 but it does not show any of the interfaces from the non-OSPF area.
What may be causing this?
- A. Router R1 needs to have an export policy added to it.
- B. Router R5 does not have an export policy for these prefixes.
- C. 'asbr' is missing from router R1's configuration.
- D. Router R1 needs to have an import policy added to it.
Answer: B
NEW QUESTION 64
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 to describe a route to neighbors outside the area.
- 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 inter-area LSA, generated by the ABR only when route summarization is configured.
- D. An OSPF type 3 LSA is an intra-area LSA, generated by the ABR only when route summarization is configured.
Answer: A
NEW QUESTION 65
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