Nokia 4A0-113 Questions Answers
Nokia OSPF Routing Protocol Exam- 104 Questions & Answers
- Update Date : October 19, 2026
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Nokia 4A0-113 Sample Questions
Question # 1A router receives an OSPF database description packet from a neighbor that references anLSA, 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 itsneighbor.
D. The router sends a link-state request to its neighbor.
E. The router takes no action.
Question # 2
Which of the following statements regarding OSPF routing updates on a point-to-point linkis true?
A. On a point-to-point link, there is no need for a DR and BDR election; all routing updatesare sent to 224.0.0.5.
B. On a point-to-point link, a DR and BDR are elected. The DR sends link-stateadvertisements describing the network.
C. On a point-to-point link, a DR and BDR are elected. To ensure resiliency, both the DRand 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 updatesare sent to the unicast address of the neighbor's interface.
Question # 3
Static routing will be used in a network between a corporate head office, with manyconnected networks, and a branch office, with one connection to the head office. Which ofthe following best describes the likely configuration?
A. The corporate head office router will have a default route and the branch site will have amore specific static route.
B. The corporate head office router and the branch office router will both have specificstatic routes.
C. The corporate head office router and the branch router will both have default routes.
D. The corporate head office router will have a more specific static route and the branchoffice router will have a default route.
Question # 4
Which of the following are similarities between OSPF and IS-IS? Choose two answers.
A. Metric is based on hop count.
B. Slow convergence after link failures.
C. Support hierarchy through the use of areas.
D. Support for CIDR.
E. Link state updates sent using layer 3 multicast.
Question # 5
What is the protocol number for OSPF in the IP header?
A. OSPF uses TCP, so the protocol number is 6.
B. OSPF uses UDP, so the protocol number is 17.
C. OSPF does not use IP.
D. OSPF has its own protocol number of 89.
Question # 6
Which of the following best describes the type of packets used by OSPF routers toexchange updates on a point-to-point link?
A. IP packets sent to an IP multicast address.
B. TCP packets sent to an IP multicast address.
C. IP packets sent to an IP unicast address.
D. UDP packets sent to an IP multicast address.
Question # 7
Which type of OSPF LSA has the following characteristics: It is flooded only within the areait originates from and can be originated by any OSPF router within the area (including nonDR routers).
A. Type 1 Router LSA
B. Type 2 Network LSA
C. Type 3 Summary LSA
D. Type 4 ASBR LSA
Question # 8
Which of the following statements regarding area border routers in an OSPF network istrue?
A. The term backbone router has the same definition as the term area border router.
B. An OSPF network needs at least one area border router to function.
C. Area border routers connect the backbone area to other areas in an OSPF network.
D. By definition, an area border router must perform route summarization between areas.
Question # 9
In an OSPF Hello packet what fields must match all neighbor routers on the segment?(Choose 3)
A. Area ID
B. Hello and Dead Intervals
C. Stub flag
D. DR and BDR addresses
E. The list of neighbors
Question # 10
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 traverse another area to reach 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 connect directly to another area without using area 0.
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 outsidethe area.
B. A Type 4 LSA is originated by an ASBR to describe a route to itself to routers outsidethe area
C. A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA isinjected 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 isinjected into the stub area to provide routing information.
Question # 12
What is the default priority value used for electing the DR on an Nokia 7750 SR runningOSPF on an Ethernet?
A. Priority of 0
B. Priority of 1
C. Priority of 64
D. Priority of 255
Question # 13
If a Router originates a type 1 router LSA with the E bit set, what types of areas can itbelong to? Select all that apply.
A. Not So Stubby Area
B. Stub Area
C. Backbone Area
D. Standard Area
Question # 14
How many databases does a Link State routing protocol use?
A. One
B. Two
C. Three
D. Four
Question # 15
Which one of the commands below will create a static route to network 2.3.4.0/24 on theAlcatel-Lucent 7750 SR router?
A. Static route 2.3.4.0 255.255.255.0 next hop 3.4.5.6
B. Static-route next-hop 3.4.5.6 2.3.4.0/24
C. Static route 2.3.4.0/24 next hop 3.4.5.6
D. Static-route 2.3.4.0/24 next-hop 3.4.5.6