nokia 4A0-113 Exam Questions
Questions for the 4A0-113 were updated on : Nov 21 ,2025
Page 1 out of 7. Viewing questions 1-15 out of 103
Question 1
Which of the following concerning OSPFv3 is TRUE?
- A. OSPFv3 uses MD5 Authentication.
- B. Router LSAs carry IPv6 prefix information.
- C. NSSA is supported in OSPFv3.
- D. OSPFv3 uses a 64-bit router ID.
Answer:
C
Question 2
Which type of OSPF LSA has the following characteristics: It is flooded only within the area it
originates from and can be originated by any OSPF router within the area (including non-DR routers).
- A. Type 1 Router LSA
- B. Type 2 Network LSA
- C. Type 3 Summary LSA
- D. Type 4 ASBR LSA
Answer:
A
Question 3
An OSPF adjacency is stuck in the exstart state. What is the most likely cause?
- A. The MTU does not match on both interfaces.
- B. OSPF is not enabled on one of the routers.
- C. The router ID is the same on both routers.
- D. An OSPF Hello has not been received from the neighbor.
- E. The interfaces are configured as point-to-point on one side and broadcast on the other.
Answer:
A
Question 4
What type of LSA is used to flood information about prefixes from one OSPF area to other attached
areas?
- A. Type 1
- B. Type 3
- C. Type 4
- D. Type 7
Answer:
B
Question 5
Click on the exhibit.
Router R2 learns the networks shown from IS-IS. Router R2 is configured to redistribute routes from
IS-IS to OSPF as shown. Assume the OSPF and IS-IS adjacencies are operational.
How many OSPF Type 5 LSAs will router R1 receive from router R2?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer:
D
Question 6
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 R3 will advertise Type 7 LSAs to Area 0 and Area 2.
- B. Only routers R2 and R3 receive Type 5 LSAs advertised by router R1.
- C. Router R2 will receive Type 5 and Type 7 LSAs.
- D. Router R7 will receive Type 5 LSAs advertised by router R1.
Answer:
D
Question 7
Which LSA type is not found in point-to-point only OSPF networks?
- A. Type 1 Router LSA
- B. Type 2 Network LS A
- C. Type 3 Summary LSA
- D. Type 5 External LSA
Answer:
B
Question 8
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. 'asbr' is missing from router R1's configuration.
- B. Router R1 needs to have an export policy added to it.
- C. Router R5 does not have an export policy for these prefixes.
- D. Router R1 needs to have an import policy added to it.
Answer:
C
Question 9
A router receives an OSPF database description packet from a neighbor that references an LSA, which
is already in the router's LSDB. The sequence number in the DBD packet is lower than the sequence
number of the LSA in the LSDB.
What action does the router take?
- A. The router sends a link-state update to its neighbor.
- B. The router sends a link-state acknowledgement to its neighbor.
- C. The router updates the information in its LSDB with the information received from its neighbor.
- D. The router sends a link-state request to its neighbor.
- E. The router takes no action.
Answer:
A
Question 10
Which of the following statements concerning OSPFv3 is false?
- A. MD5 Authentication is not supported.
- B. Router LSAs do not carry IPv6 prefix information
- C. NSSA is not supported in OSPFv3.
- D. OSPFv3 uses a 32-bit router ID.
Answer:
C
Question 11
Which of the following statements best describes the function of an OSPF Type 4 LSA?
- A. A Type 4 LSA is originated by an ABR to describe a route to an ASBR to routers outside the area.
- B. A Type 4 LSA is originated by an ASBR to describe a route to itself to routers outside the area. C.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.
- D. 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.
Answer:
A
Question 12
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. An OSPF database description packet has not been received from the neighbor.
- B. The interface facing the neighbor is down.
- C. The interface is included in a different area than the neighbor router.
- D. The router has not received a valid OSPF Hello packet from its neighbor.
Answer:
A
Question 13
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 OSPF internal preference
- B. The IS-IS Level 1 internal preference
- C. The IS-IS Level 2 internal preference
- D. The OSPF external preference
- E. The IS-IS Level 2 external preference
- F. The IS-IS Level 1 external preference
Answer:
B, D
Question 14
Which of the following statements regarding OSPF routing updates on a point-to-point link is true?
- A. 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.
- B. On a point-to-point link, a DR and BDR are elected. The DR sends link-state advertisements describing the network.
- C. 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.
- D. 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.
Answer:
A
Question 15
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 network LSA
- D. Summary router LSA
- E. Type 5 (AS external) LSAs
Answer:
AB