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Nokia OSPF Routing Protocol Exam Question and Answers

Nokia OSPF Routing Protocol Exam

Last Update Nov 30, 2025
Total Questions : 104

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Questions 1

What must be configured on the Nokia 7750 SR for RIP to advertise locally attached links?

Options:

A.  

A policy statement within the router identifying what is to be advertised

B.  

Access-lists denoting what is to be advertised

C.  

Default metrics for each link

D.  

A group and neighbor statement for each peer

Discussion 0
Questions 2

If OSPF is used in a multi-area OSPF network, which of the following statements regarding route summarization is true?

Options:

A.  

Manual route summarization can only be done on autonomous system border routers.

B.  

Manual route summarization must be done on all the backbone routers to be effective. Manual route summarization is optional on the routers in non-backbone areas.

C.  

Manual route summarization is done on the ABRs. By default, automatic summarization is done; however, it may not be optimal for all networks.

D.  

Manual route summarization is done on the ABRs. By default, no route summarization is done and all routes are advertised to all areas.

Discussion 0
Questions 3

Which of the following types of networks are supported on a Nokia 7750 SR for OSPF? Choose two answers.

Options:

A.  

Broadcast

B.  

Non-broadcast multi-access

C.  

Point-to-point

D.  

Point-to-multipoint

Discussion 0
Questions 4

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?

Options:

A.  

traceroute 2.3.4.1

B.  

traceroute 2.3.4.0/24 next-hop 1.2.3.4

C.  

traceroute next-hop 1.2.3.4

D.  

traceroute does not work on the Nokia 7750 SR

Discussion 0
Questions 5

Which of the following statements regarding OSPF routing updates on a point-to-point link is true?

Options:

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.

Discussion 0
Questions 6

What is the default priority value used for electing the DR on an Nokia 7750 SR running OSPF on an Ethernet?

Options:

A.  

Priority of 0

B.  

Priority of 1

C.  

Priority of 64

D.  

Priority of 255

Discussion 0
Questions 7

What are the default Hello and Dead timer intervals for OSPF on the Nokia 7750 SR?

Options:

A.  

5 and 15 seconds

B.  

10 and 30 seconds

C.  

5 and 20 seconds

D.  

10 and 40 seconds

Discussion 0
Questions 8

Which of the LSA types stay within an OSPF area and are not exported outside of the area? (Choose all that apply)

Options:

A.  

Router LSA

B.  

Network LSA

C.  

Summary Network LSA

D.  

Summary Router LSA

Discussion 0
Questions 9

Which of the following commands can be used to display the number of SPF computations that have been performed on a router?

Options:

A.  

show router ospf area

B.  

show router ospf neighbor

C.  

show router ospf interface

D.  

show router ospf status

Discussion 0
Questions 10

In which of the following types of areas does an OSPF router not set the E bit in its Type 1 LSA?

Options:

A.  

Not so stubby area

B.  

Stub area

C.  

Backbone area

D.  

Normal area

Discussion 0
Questions 11

What type of OSPF router generates a type 2 LSA?

Options:

A.  

Area Border Router

B.  

Autonomous System Boundary Router

C.  

Designated Router

D.  

All routers within an OSPF area.

Discussion 0
Questions 12

Click the exhibit button.

Two neighboring OSPF routers have exchanged the packets shown. What state is the adjacency in?

Options:

A.  

Full; both routers are exchanging Helios to maintain the adjacency.

B.  

The adjacency is down.

C.  

The adjacency is in exstart state.

D.  

The adjacency is in the exchange state.

Discussion 0
Questions 13

An Nokia 7750 SR receives a route via an IS-IS LSP with internal reachability, and receives the same route via an OSPF type 5 LSA. If all protocol preferences are default, which route will be installed in the route table?

Options:

A.  

The route learned via IS-IS will be installed.

B.  

The route learned via the OSPF type 5 LSA will be installed.

C.  

Both routes will be installed, if ECMP is enabled.

D.  

Both routes will be installed, regardless of whether ECMP is enabled.

Discussion 0
Questions 14

If a Router originates a type 1 router LSA with the E bit set, what types of areas can it belong to? Select all that apply.

Options:

A.  

Not So Stubby Area

B.  

Stub Area

C.  

Backbone Area

D.  

Standard Area

Discussion 0
Questions 15

Which of the following conditions will prevent an OSPF adjacency from reaching the full state? Choose three answers.

Options:

A.  

MTU mismatch

B.  

Incorrect subnet mask

C.  

System interface not included in OSPF

D.  

Area ID not the same

E.  

Different metric set on each end of the link

F.  

Router ID not defined

Discussion 0
Questions 16

When redistributing OSPF into RIP V2 what must be taken into consideration for the redistribution to take place?

Options:

A.  

The metric must be set accordingly for RIP

B.  

The subnet mask must be removed from the OSPF route

C.  

You must divide the cost of the OSPF route by three

D.  

The router must be configured as an ASBR

Discussion 0
Questions 17

NSSA LSA packets are what type within an NSSA area, and are converted to what other type at the ABR?

Options:

A.  

They are type 7 within the area and are not modified at the ABR

B.  

They are type 5 within the area and converted to type 3 at the ABR

C.  

They are type 5 within the area and are not modified at the ABR

D.  

They are type 7 within the area and converted to type 5 at the ABR

Discussion 0
Questions 18

Click the exhibit button.

Which of the following would correctly configure routers R2, R3, and R4?

Options:

A.  

Option A

B.  

Option B

C.  

Option C

D.  

Option D

Discussion 0
Questions 19

Which of the following statements regarding OSPF routing updates on a multi-access network segment is true?

Options:

A.  

In multi-access networks, a DR and BDR are elected only if there are more than two routers connected to the network segment.

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. The DR sends link-state advertisements describing the network.

Discussion 0
Questions 20

Click on the exhibit.

Options:

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.

Discussion 0
Questions 21

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?

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?

Options:

A.  

Option A

B.  

Option B

C.  

Option C

D.  

Option D

Discussion 0
Questions 22

Which of the following statements best describes the function of an OSPF Type 4 LSA?

Options:

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.

Discussion 0
Questions 23

Which of the following best describes the type of packets used by OSPF routers to exchange updates on a point-to-point link?

Options:

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.

Discussion 0
Questions 24

What are the three databases maintained by a Link State Protocol?

Options:

A.  

Neighbor, adjacency, route table

B.  

Neighbor, topology, forwarding

C.  

Topology, routing, forwarding

D.  

There are only two databases: adjacency and topology

Discussion 0
Questions 25

Which of the following OSPF area types are supported by the Alcatel-Lucent 7750 SR? Choose two answers.

Options:

A.  

Not so stubby areas

B.  

Level1 area WC

C.  

Stub areas

D.  

Partially stubby areas

E.  

Level 2 areas

Discussion 0
Questions 26

What is the default preference value for a static route in the Nokia 7750 SR router?

Options:

A.  

0

B.  

5

C.  

10

D.  

15

Discussion 0
Questions 27

Click the exhibit button.

The following command sequence is executed on router R2:

Options:

A.  

R2# configure router ospf router-id 10.10.10.99

B.  

R2# configure router router-id 10.10.10.66

On router R1, what router ID appears for router R2 directly after these commands are executed?

C.  

10.10.10.99

D.  

10.10.10.66

E.  

10.10.10.2

F.  

10.10.10.1

Discussion 0
Questions 28

Identify two attributes of Distance Vector Protocols: (Choose two)

Options:

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.

Discussion 0
Questions 29

What causes an adjacency to change from down to two ways?

Options:

A.  

When a link state update is received in response to a link state request.

B.  

When a router receives a Hello packet that contains its own router ID in the neighbor list from a neighbor.

C.  

When a router receives a database description packet from a neighbor.

D.  

When a link state acknowledgement is received in response to a link state update.

Discussion 0
Questions 30

Click the exhibit button.

The OSPF adjacency between routers R3 and R1 is down. What is the problem?

Options:

A.  

Area 1 of router R1 should not be configured as a stub.

B.  

Router R3 has the incorrect authentication key type.

C.  

Router R1 has the incorrect authentication key type.

D.  

There is not enough information to tell.

Discussion 0
Questions 31

In an IP datagram, which of the following fields identifies the receiving application?

Options:

A.  

The protocol field of the transport layer header.

B.  

The port field of the transport layer header.

C.  

The protocol field of the network layer header.

D.  

The port field of the network layer address.

Discussion 0
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