2021 Nokia OSPF Routing Protocol 4A0-113 Practice Exam Questions Online

1. Router R2 advertises the network 192.168.3.0/24 to router R1 via OSPF. A route policy has been constructed to discard the route on router R1; however, it is not working. What is the problem?

The prefix list reject should be “192.168.3.0/16 exact”

Router R1 should be configured as an OSPF “asbr”

The policy “reject” should be set for import rather than export

The policy was likely not “committed” after creation

This is not possible because OSPF cannot use import policies

2. What is the default preference value for a static route in theNokia7750 SR router?

3. Which of the following OSPFv3 LSAs have an AS scope?

Link Local LSA

Router LSA

Network LSA

Inter-Area Router LSA

Intra-Area Prefix LSA

None of the above LSAs have an AS scope.

4. In an IP datagram, which field identifies the receiving application?

The protocol field of the transport layer header

The port field of the transport layer header

The protocol field of the network layer header

The port field of the network layer address

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

show router ospf area

show router ospf neighbor

show router ospf interface

show router ospf status

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

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.

On a point-to-point link, a DR and BDR are elected. The DR sends link-state advertisements describing the network.

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.

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.

7. In an OSPF Hello packet what fields must match all neighbor routers on the segment? (Choose 3)

Area ID

Hello and Dead Intervals

Stub flag

DR and BDR addresses

The list of neighbors

8. What command will show the OSPF neighbors, and their status on theNokia7750 SR?

Show ospf neighbors

Show router ospf neighbors

Show router ospf adjacency

Show ospf adjacency

9. Which of the following types of networks are supported on anNokia7750 SR for OSPF? Choose two answers.

Broadcast

Non-broadcast multi-access

Point-to-point

Point-to-multipoint

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

Use split horizon by default.

Send information about directly connected links to neighbors at periodic intervals.

Use holddown timers when topologies change to allow for convergence.

Maintain multiple databases: neighbor, topology and routing.

11. What is the default inbound metric for RIP on theNokia7750 SR?

Whatever the advertised metric happens to be.

A value of 1.

This must be administratively set as there is no default value.

A value of 15.

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

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

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

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

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

13. What is the default priority value used for electing the DR on anNokia7750 SR running OSPF on an Ethernet?

Priority of 0

Priority of 1

Priority of 64

Priority of 255

14. Click the exhibit button.

What can you deduce from the show command on router R6?

The router R6 interface is in a multi-access segment. It is neither the DR nor the BDR for the segment. The DR for this segment would be the router with router ID 10.10.10.5.

The router R6 interface is in a multi-access segment. It is neither the DR nor the BDR for the segment; however, this command does not indicate whether 10.10.10.3 or
10.10.10.5 is the DR or BDR.

The router R6 interface is in a multi-access segment. It is the BDR, which is why it is not adjacent to the other routers.

The router R6 interface is in a multi-access segment. It is neither the DR nor the BDR for the segment. The DR for this segment would be the router with router ID 10.10.10.3.

15. What are the ways the RID can be created on anNokia7750 SR router? (Choose three)

From the last 32 bits of the chassis MAC address

From the first 32 bits of the chassis MAC address

The loopback IP address

By using the command “config router ospf rid X.X.X.X”

From the system IP address

From the highest interface IP address

16. Which of the following statements apply to link state protocol behavior? Choose three answers.

Routers broadcast the entire route table to all neighbors.

Information about directly connected links is sent to all neighbors.

An adjacency database is maintained by each router.

The sequence number for an update is incremented as it is flooded from router to router.

The topological database is the same for all routers in a single area.

17.

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?

‘asbr’ is missing from router R1’s configuration.

Router R1 needs to have an export policy added to it.

Router R5 does not have an export policy for these prefixes.

Router R1 needs to have an import policy added to it.

18. Which of the following statements describe the major features of OSPF? Choose two answers.

Fast reroute capability

Control traffic prioritization

Route redistribution

Traffic engineering extensions

Cut through forwarding

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

The protocol field of the transport layer header.

The port field of the transport layer header.

The protocol field of the network layer header.

The port field of the network layer address.

20. What type of OSPF router generates a type 2 LSA?

Area Border Router

Autonomous System Boundary Router

Designated Router

All routers within an OSPF area.

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