Nokia 4A0-113 Exam Dumps [2025] Practice Valid Exam Dumps Question
4A0-113 Dumps - Grab Out For [NEW-2025] Nokia Exam
Nokia OSPF Routing Protocol Certification Exam (4A0-113) is designed to validate the knowledge and skills of network professionals in deploying and managing OSPF routing protocol in Nokia Service Router Networks. 4A0-113 exam focuses on the key concepts, design principles, and implementation strategies of OSPF routing protocol in Nokia’s Service Router portfolio. Nokia OSPF Routing Protocol Exam certification aims to help network professionals enhance their expertise in managing and troubleshooting Nokia Service Router Networks.
Nokia 4A0-113 certification exam is designed to help professionals validate their skills and knowledge in Nokia OSPF routing protocol. 4A0-113 exam is intended for individuals who work with Nokia IP networks and want to demonstrate their proficiency in designing, configuring, and troubleshooting OSPF-based networks. Passing 4A0-113 exam is a great way to showcase your expertise and stand out in the competitive job market.
NEW QUESTION # 51
What are the default Hello and Dead timer intervals for OSPF on the Nokia 7750 SR?
- A. 5 and 20 seconds
- B. 10 and 40 seconds
- C. 5 and 15 seconds
- D. 10 and 30 seconds
Answer: B
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
FromNokia 7750 SR OS OSPF Guide - OSPF Timers Section:
"The default OSPF Hello interval is 10 seconds, and the default Dead interval is four times the Hello interval (40 seconds)." Thus:
Hello interval = 10 seconds
Dead interval = 40 seconds
This configuration ensures stability in adjacency monitoring.
NEW QUESTION # 52
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. Uses Graceful Restart to inter-operate with other vendors
- D. Transparent to routing neighbors
Answer: A,D
NEW QUESTION # 53
What is the source IP address in an OSPF update?
- A. 224.0.0.6
- B. 224.0.0.5
- C. The system address of the router
- D. The unicast IP address of the interface the update is being sent on.
Answer: D
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
From Nokia 7750 SR OS Routing Protocols Guide (OSPF Packet Headers):
"The source IP address in OSPF packets is always the IP address of the interface over which the packet is transmitted."
224.0.0.5 and 224.0.0.6 are destination multicast addresses, not source addresses.
Thus, correct answer: C.
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NEW QUESTION # 54
In an OSPF environment, what must a router receive after it sends out an update?
- A. The router must receive a new sequence number
- B. The router must receive a Hello
- C. The router must receive a Link State Packet
- D. The router must receive an acknowledgment
Answer: D
NEW QUESTION # 55
What is the source IP address in an OSPF update?
- A. 224.0.0.6
- B. 224.0.0.5
- C. The unicast IP address of the interface the update is sent on
- D. The system address of the router.
Answer: C
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
From Nokia 7750 SR OS Routing Protocols Guide (OSPF Packet Header Information):
The source IP address of OSPF packets is always the IP address of the interface sending the packet.
224.0.0.5 and 224.0.0.6 are destination multicast addresses, not source addresses.
Thus, correct answer: C.
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
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
From Nokia 7750 SR OS Routing Protocols Guide (NSSA Operation):
"AS-external routes originated within NSSA areas are carried as Type 7 LSAs. ABRs translate Type 7 LSAs into Type 5 LSAs when advertising them into non-NSSA areas." Thus, correct answer: D.
NEW QUESTION # 57
What are the ways the RID can be created on a Nokia 7750 SR router? (Choose three)
- A. From the system IP address
- B. From the highest interface IP address
- C. From the first 32 bits of the chassis MAC address
- D. By using the command "config router ospf router-id X.X.X.X"
- E. The loopback IP address
- F. From the last 32 bits of the chassis MAC address
Answer: A,B,D
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
From Nokia 7750 SR OS Routing Protocols Guide (Router ID Selection Rules):
The order of RID selection:
Manually configured RID via "config router ospf router-id" (D - Correct) System IP address (E - Correct) Highest interface IP address (F - Correct) RID is not derived from MAC addresses.
Thus, correct answers: D, E, F.
NEW QUESTION # 58
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 # 59
What must be configured on the Nokia 7750 SR for RIP to advertise locally attached links?
- A. Default metrics for each link
- B. A group and neighbor statement for each peer
- C. Access-lists denoting what is to be advertised
- D. A policy statement within the router identifying what is to be advertised
Answer: D
NEW QUESTION # 60
What are the types of networks supported on a Nokia 7750 SR for OSPF? (Choose 2)
- A. Point-to-Multipoint
- B. Broadcast
- C. Non-Broadcast Multi-Access
- D. Point-to-Point
Answer: B,D
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
From Nokia 7750 SR OS Routing Protocols Guide (OSPF Supported Network Types):
"OSPF supports broadcast and point-to-point network types on the Nokia 7750 SR." Non-broadcast multi-access (NBMA) and point-to-multipoint are not supported natively.
Thus, correct answers: A, C.
NEW QUESTION # 61
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. Stub flag
- C. Hello and Dead intervals
- D. Area ID
- E. Checksum values
Answer: B,C,D
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
From Nokia 7750 SR OS Routing Protocols Guide (OSPF Hello Protocol Rules):
"OSPF requires the following parameters to match for neighbor establishment: Area ID, Hello interval, Dead interval, and options (including Stub flag)." A (Correct): Area ID must match.
B (Correct): Hello and Dead intervals must match.
C (Correct): Stub flag is part of the OSPF Options field and must match.
D: Checksum applies to LSA packets, not Hello packets.
NEW QUESTION # 62
What best describes the type of packets used by OSPF routers to exchange updates on a pointto-point link?
- A. Ethernet frames sent to an Ethernet multicast address.
- B. IP packets sent to an IP multicast address.
- C. UDP packets sent to an IP multicast address.
- D. IP packets sent to an IP unicast address.
Answer: B
NEW QUESTION # 63
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. Use holddown timers when topologies change to allow for convergence.
- D. Maintain multiple databases: neighbor, topology and routing.
Answer: A,C
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
From Nokia 7750 SR OS Routing Protocols Guide (Distance Vector Fundamentals):
A (Correct): Split horizon is a default loop prevention technique in distance vector protocols like RIP.
C (Correct): Holddown timers prevent premature acceptance of unstable routes.
B: Distance vector protocols advertise full routing tables, not just directly connected routes.
D: This is a characteristic of link-state protocols (OSPF/IS-IS).
Thus, correct answers are A and C.
NEW QUESTION # 64
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?
- A. Router R1 generates a type 4 LSA that is flooded to areas 0, 1, and 2.
- B. Router R3 generates a type 4 LSA that is flooded to areas 0, 1, and 2.
- C. Router R3 generates a type 4 LSA that is flooded to areas 0 and 2.
- 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.
Answer: D
NEW QUESTION # 65
What is the metric and maximum routable value for RIP?
- A. Hop count and 16
- B. Link cost and 16
- C. Link cost and 15
- D. Hop count and 15
Answer: A
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
From Nokia 7750 SR OS Routing Protocols Guide (RIP Metrics):
"RIP uses hop count as its metric, with 16 hops representing unreachable." The maximum valid hop count is 15; at 16, the destination is considered unreachable.
Thus, correct answer is A.
NEW QUESTION # 66
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?
- A. Option B
- B. Option D
- C. Option C
- D. Option A
Answer: D
NEW QUESTION # 67
Which of the following LSA types stay within an OSPF area, and are not flooded outside of the area? Choose two answers.
- A. Router LSA
- B. Network LSA
- C. Summary router LSA
- D. Type 5 (AS external) LSAs
- E. Summary network LSA
Answer: A,B
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
From Nokia 7750 SR OS Routing Protocols Guide (OSPF LSA Types Summary):
A (Router LSA - Type 1): Always area-scoped.
B (Network LSA - Type 2): Always area-scoped.
C & D (Summary LSAs - Type 3): Flooded between areas.
E (AS-External LSAs - Type 5): Have AS-wide scope.
Thus, correct answers: A, B.
NEW QUESTION # 68
An OSPF adjacency is stuck in the exstart state. What is the most likely cause?
- A. The interfaces are configured as point-to-point on one side and broadcast on the other.
- B. The router ID is the same on both routers.
- C. An OSPF Hello has not been received from the neighbor.
- D. OSPF is not enabled on one of the routers.
- E. The MTU does not match on both interfaces.
Answer: E
NEW QUESTION # 69
Which of the following OSPF area types are supported by the Alcatel-Lucent 7750 SR? Choose two answers.
- A. Not so stubby areas
- B. Level1 area WC
- C. Level 2 areas
- D. Stub areas
- E. Partially stubby areas
Answer: A,D
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
FromNokia 7750 SR OS OSPF Guide - Area Types Section:
"The 7750 SR supports standard areas, stub areas, and not-so-stubby areas (NSSA)." NSSA (Not-So-Stubby Areas) are supported.
Stub Areas are supported.
Terms like Level 1, Level 2, or WC do not apply to OSPF but rather to IS-IS.
Thus, the correct answers are A and C.
NEW QUESTION # 70
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 external preference
- B. The OSPF internal preference
- C. The IS-IS Level 1 internal preference
- D. The OSPF external preference
- E. The IS-IS Level 2 internal preference
- F. The IS-IS Level 2 external preference
Answer: C,D
NEW QUESTION # 71
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 is included in a different area than the neighbor router.
- B. An OSPF database description packet has not been received from the neighbor.
- C. The interface facing the neighbor is down.
- D. The router has not received a valid OSPF Hello packet from its neighbor.
Answer: B
NEW QUESTION # 72
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 a Nokia 7750 SR?
- A. traceroute next-hop 1.2.3.4
- B. traceroute does not work on the Nokia 7750 SR
- C. traceroute 2.3.4.1
- D. traceroute 2.3.4.0/24 next-hop 1.2.3.4
Answer: C
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
From Nokia 7750 SR OS Routing Protocols Guide (Static Route Testing):
"Use traceroute to test reachability by specifying an IP address within the destination subnet." The static route points to 2.3.4.0/24, so you select any valid host IP (e.g., 2.3.4.1) inside that subnet.
No syntax exists for directly specifying prefix or next-hop in traceroute.
Thus, correct answer is A.
NEW QUESTION # 73
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Nokia 4A0-113 exam is designed to test the knowledge of candidates in the Nokia OSPF routing protocol. OSPF is a popular routing protocol used in large enterprise networks, and it is critical for network engineers to have a good understanding of its operation. 4A0-113 exam covers various topics related to OSPF, such as OSPF configuration, troubleshooting, and optimization. Passing 4A0-113 exam demonstrates the candidate's ability to design, implement, and manage OSPF networks.
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