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Nokia 4A0-101 Dumps

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Total 315 questions
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Nokia Interior Routing Protocols Questions and Answers

Question 1

Which of the following regarding IS-IS DIS is FALSE?

Options:

A.

L1 and L2 routers elect separate DIS's.

B.

DIS uses a specific Ethernet multicast address to communicate with other routers on the broadcast network.

C.

If a new router starts up in a LAN and has a higher interface priority, the new router preempts the original DIS and becomes the DIS.

D.

In broadcast multi-access networks, such as Ethernet, one router is elected as the DIS and a second router as the backup DIS.

Question 2

Click on the exhibit.

Router R2 has a directly connected interface to network 192.168.3.0/24 that is included in IS-IS.

If router R4 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. Assume that all IS-IS routers are L1/L2 capable and are in the same area.

Which of the following is TRUE?

Options:

A.

Router R3 will install the IS-IS route in it's routing table.

B.

Router R3 will install the OSPF route in it's routing table.

C.

Router R3 will install an OSPF route and an IS-IS route in it's route table.

D.

There is not enough information to answer the question.

Question 3

If the OSPF reference bandwidth is set to 1000 Gbps. what is the cost of a 1 Gbps interface?

Options:

A.

1

B.

10

C.

100

D.

1000

Question 4

Which of the following describes the purpose of 6over4 tunneling?

Options:

A.

To give IPv6 traffic preferential routing over IPv4 routes.

B.

To allow core routers running only IPv6 protocols to carry IPv4 traffic.

C.

To give IPv4 only routers the ability to route based on IPv6 addresses.

D.

To allow IPv6 traffic to pass through an IPv4 network.

Question 5

Click on the exhibit.

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 5 LSA generation is TRUE?

Options:

A.

Router R1 generates a Type 5 LSA that is flooded to area 1 only.

B.

Router R1 generates a Type 5 LSA that is flooded to areas 1 and 0. Router R6 generates a Type 5 LSA that is flooded to area 2.

C.

Router R1 generates a Type 5 LSA that is flooded to areas 0.1, and 2.

D.

Router R3 generates a Type 5 LSA that is flooded to areas 0 and 2

E.

Type 5 LSAs are not generated in this network topology.

Question 6

An OSPF backbone area contains Type 5 LSAs. If an attached area receives only Summary LSAs from the backbone area, what type of area is the attached area?

Options:

A.

Normal

B.

Stub

C.

Totally stubby

D.

Totally NSSA

Question 7

Click on the exhibit.

What is the correct command to configure a default route on the Alcatel-Lucent 7750SR R2?

Options:

A.

config> static-route 0.0.0.0/0 next-hop 10.1.2.2

B.

config>router> static-route 0.0.0.0 255.255.255.255 next-hop 10.1.2.1

C.

config>router> static-route 0.0.0.0/0 next-hop 10.1.2.2

D.

config>router> static-route 0.0.0.0/0 next-hop 10.1.2.1

Question 8

How is the DR selected when an OSPF router is added to a broadcast network?

Options:

A.

The current DR is selected, if there is one. Otherwise, the router with the lowest priority is the DR. If priorities are the same, the DR is chosen based on the lowest RID.

B.

The current DR is selected, if there is one. Otherwise, the router with the highest priority is the DR. If priorities are the same, the DR is chosen based on the highest RID.

C.

The router with the lowest priority is the DR. If priorities are the same, the current DR is selected. Otherwise the DR is chosen based on the lowest RID.

D.

The router with the highest priority is the DR. If priorities are the same, the current DR is selected. Otherwise the DR is chosen based on the highest RID.

Question 9

Click on the exhibit.

If router R2 re-distributes the IS-IS route 192.168.3.0/24 into OSPF, router R3 will receive two routes to 192.168.3.0/24 Assume that all IS-IS routers are L1/L2 capable and are in the same area.

What will be the preference of the two routes?

Options:

A.

OSPF internal preference and IS-IS Level 1 internal preference.

B.

OSPF internal preference and IS-IS Level 1 external preference.

C.

OSPF external preference and IS-IS Level 1 internal preference.

D.

OSPF external preference and IS-IS Level 2 internal preference.

E.

OSPF external preference and IS-IS Level 1 external preference.

Question 10

Which of the following best describes the features of Classless Inter-Domain Routing (CIDR)?

Options:

A.

Automatic summarization and the use of IP addresses that use any number of bits for the network portion of the address.

B.

Manual summarization and the use of IP addresses that use any number of bits for the network portion of the address.

C.

Automatic summarization and the use of IP addresses that use a fixed number of bits for the network portion of the address.

D.

Manual summarization and the use of IP addresses that use a fixed number of bits for the network portion of the address.

Question 11

Choose the Distance Vector Protocols from the list below:

Options:

A.

OSPF

B.

RIPv1

C.

RIPv2

D.

IS-IS

Question 12

What command allows analysis of the Dijkstra calculation on the Alcatel-Lucent 7750 SR?

Options:

A.

There is no such calculation in IS-IS

B.

Show router isis database

C.

Show router isis dijykstra

D.

Show router isis spf

Question 13

What are the ways the RID can be created on an Alcatel-Lucent 7750 SR router? (Choose three)

Options:

A.

From the last 32 bits of the chassis MAC address

B.

From the first 32 bits of the chassis MAC address

C.

The loopback IP address

D.

By using the command "config router ospf rid X.X.X.X"

E.

From the system IP address

F.

From the highest interface IP address

Question 14

What is the default preference value for a static route in the Alcatel-Lucent 7750 SR router?

Options:

A.

0

B.

5

C.

10

D.

15

Question 15

A static route is created using the command "static-route 0.0.0.0/0 next-hop 3.3.3.1". What command could be used to test the static route on an Alcatel-Lucent 7750 SR?

Options:

A.

Ping static 3.3.3.1

B.

Ping static 0.0.0.0/0

C.

Ping 3.3.3.1

D.

Ping 0.0.0.0

Question 16

What command could be used to verify proper configuration of a static route in an Alcatel-Lucent 7750 SR router?

Options:

A.

Show route-table

B.

Show router routing-table

C.

Show router route-table

D.

Show static

Question 17

Exhibit

The following IS-IS packets have been exchanged between 2 adjacent IS-IS routers. What type of adjacency will be formed?

Options:

A.

An L1 adjacency will be formed.

B.

An L1/L2 adjacency will formed

C.

L2 adjacency will be formed

D.

No adjacency will be formed

Question 18

From the list below select the statements that describe the behavior of link state information aging. (Choose 2)

Options:

A.

The age for newly created link state information is set to 0 for OSPF and 1200 for IS-IS

B.

The age for newly created link state information is set to 1200 for OSPF and 0 for IS-IS

C.

The age is incremented or decremented as it is flooded from router to router and as it is held in the topological database.

D.

The age is incremented or decremented only as it is held in the topological database and not as it is flooded router to router.

Question 19

What is the source IP address in an OSPF update?

Options:

A.

224.0.0.5

B.

224.0.0.6

C.

The unicast IP address of the interface the update is being sent on.

D.

The system address of the router

Question 20

In an IP datagram, which field 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

Question 21

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.

Question 22

Click the exhibit button.

What is the command to configure a static route on the Alcatel-Lucent 7750 SR router R1 to reach the network behind router R2?

Options:

A.

configure router static-route 139.120.121.0/24 next-hop 138.120.199.2

B.

configure router static-route 139.120.121.0/24 next-hop 138.120.199.1

C.

configure router static-route 138.120.199.2/24 next-hop 138.120.199.1

D.

configure router static-route 139.120.121.0/24 next-hop 139.120.121.2

Question 23

Which of the following is an optional parameter when configuring IS-IS protocol on a router?

Options:

A.

Configure IS-IS interfaces

B.

Enable IS-IS

C.

Configure level capabilities

D.

Specify an area address

Question 24

Click the exhibit button.

In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. Which of the following statements regarding the OSPF LSAs in the network is true?

Options:

A.

Router R1 generates a type 5 LSA that is flooded through all OSPF areas.

B.

Router R1 generates a type 7 LSA that is flooded through all OSPF areas.

C.

Router R1 generates a type 5 LSA that is flooded through area 1. Router R2 generates a type 7 LSA that is flooded through areas 0 and 2.

D.

Router R1 generates a type 7 LSA that is flooded through area 1. Router R3 generates a type 5 LSA that is flooded through areas 0 and 2.

Question 25

Click the exhibit button.

What triggers convergence of the routing protocol when the link between switch 1 and switch 2 goes down?

Options:

A.

Convergence is triggered when the adjacency between routers R1 and R2 drops as a result of Hello timeouts. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.

B.

Convergence is triggered when the physical interfaces between routers R1 and R2 go down. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.

C.

Convergence will not be triggered because switches cannot run routing protocols between them.

D.

Convergence is triggered when the switches notify the routers about the link state information. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged

E.

Convergence is triggered when an LSA is sent from router R1 to router R2 to indicate that the link is down. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.

Question 26

Which of the following statements best describes an OSPF type 3 LSA?

Options:

A.

An OSPF type 3 LSA is an intra-area LSA, generated by the ABR only when route summarization is configured.

B.

An OSPF type 3 LSA is an inter-area LSA, generated by the ABR only when route summarization is configured.

C.

An OSPF type 3 LSA is an inter-area LSA, generated by an ASBR to describe external routes.

D.

An OSPF type 3 LSA is an inter-area LSA, generated by the ABR to describe a route to neighbors outside the area.

Question 27

Click the exhibit button.

The following command sequence is executed on router R2:

  • A: R2# configure router ospf router-id 10.10.10.99
  • A: 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?

Options:

A.

10.10.10.99

B.

10.10.10.66

C.

10.10.10.2

D.

10.10.10.1

Question 28

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.

Question 29

In an OSPF Hello packet, which of the following fields must match for all neighbor routers on the segment? Choose three answers.

Options:

A.

Area ID W B.

B.

Hello and Dead intervals PC.

C.

Stub flag

D.

Checksum values

E.

The list of neighbors

Question 30

Which of the following statements regarding the IS-IS CSNP is false?

Options:

A.

CSNPs are used to maintain consistency in the link state database.

B.

CSNPs are advertised before an adjacency is formed with another router.

C.

There are two types of CSNPs: Level 1 and Level 2.

D.

CSNPs are advertised after an adjacency is formed with another router.

Question 31

Which three IS-IS PDU types are used for database synchronization?

Options:

A.

Hellos, CSNPs, PSNPs

B.

LSPs. Hellos, CSNPs

C.

LSPs, PSNPs, Hellos

D.

LSPs, CSNPs, PSNPs

Question 32

Which of the statements below best describes the operation of the IPv6 anycast address?

Options:

A.

A packet with a destination anycast address is sent to all nodes on the local link.

B.

A packet with a destination anycast address is sent to all nodes on the local network.

C.

A packet with a destination anycast address is sent to all nodes that have joined the anycast group.

D.

A packet with a destination anycast address is sent to the nearest node that is assigned the anycast address

E.

A packet with a destination anycast address is sent to all nodes that are assigned the anycast address.

Question 33

Which part of the NSAP address is used to indicate to the end system that a packet is to be processed by the router itself?

Options:

A.

AFI

B.

IDI

C.

HO-DSP

D.

NSEL

Question 34

Refer to the exhibit.

Assume that OSPFv3 is properly configured on all routers and that R4 advertises its system prefix into Area 0. Which of the following statements best describes how R5 learns R4's IPv6 system prefix?

Options:

A.

With a Router LSA originated by R1

B.

With a Router LSA originated by R5

C.

With a Router LSA originated by R4

D.

With an Inter-Area Prefix LSA originated by R1

E.

With an Inter-Area Prefix LSA originated by R5

F.

With an Inter-Area Prefix LSA originated by R4

Question 35

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?

Options:

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.

Question 36

Click the exhibit button.

Router R2 advertises the network 192.168.3.0/24 to router R1 via RIP.

How can router R1 ensure that it discards the route?

Options:

A.

Use an import policy and a prefix list on router R1 to reject this route.

B.

Use a prefix list on router R1 to discard all ingress IS-IS routes.

C.

Use an export policy and prefix list on router R1 to reject this route.

D.

This is not possible because RIP cannot use import policies.

Question 37

Refer to the exhibit below.

R1 distributes its loopbacks into IS-IS and globally routed addresses are configured as shown. How many routes will R4 have in its IPv6 route table?

Options:

A.

1

B.

2

C.

3

D.

4

E.

6

F.

7

Question 38

Which of the following LSA types stay within an OSPF area, and are not flooded outside of the area? Choose two answers.

Options:

A.

Router LSA

B.

Network LSA

C Summary network LSA

C.

Summary router LSA

D.

Type 5 (AS external) LSAs

Question 39

If routers R1 and R2 have a Level 1 and Level 2 IS-IS adjacency, which of the following statements are true? Choose two answers.

Options:

A.

Routers R1 and R2 are in different areas,

B.

Routers R1 and R2 are in the same area.

C.

Routers R1 and R2 will send a Level 1 Hello PDU and Level 2 Hello PDU, if the interface type between them is point-to-point.

D.

Routers R1 and R2 will send a Level 1 Hello PDU and Level 2 Hello PDU, if the interface type between them is broadcast.

E.

Routers R1 and R2 will send a Level 1/2 Hello PDU, if the interface type between them is broadcast.

Question 40

Click the exhibit button.

Given the topology and the route-tables shown, which of the following is most likely to be the configuration on router R1?

Options:

A.

Option A

B.

Option B

C.

Option C

D.

Option D

Question 41

An Alcatel - Lucent 7750 SR receives a route from an IS-IS LSP with internal reachability, and receives the same route from 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 from IS-IS will be installed.

B.

The route learned from OSPF will be installed.

C.

Both routes will be installed.

D.

There is not enough information to answer the question

Question 42

Which of the following about IS-IS level hierarchies is FALSE?

Options:

A.

Level 2 routers interconnect the Level 1 areas.

B.

There must be a contiguous Level 2 backbone to enable routing throughout the entire network.

C.

Level 1 routers send packets to the nearest L1/L2 router if the destination is in a different area

D.

Level 2 routers store the Level 1 and Level 2 topology information in a single database.

Question 43

Which of the following best describes the actions taken by an IS-IS router after it receives an LSP on a broadcast interface that is newer than the one in its database?

Options:

A.

The router sends a copy of the LSP from its database to its neighbor.

B.

The router updates its database with the LSP and floods a copy to its other neighbors.

C.

The router updates its database with the LSP, acknowledges the LSP with a PSNP and floods a copy to its other neighbors.

D.

The router updates its database with the LSP and acknowledges it with a PSNP.

Question 44

Click on the exhibit.

The OSPF adjacency between routers R1 and R3 does not come up.

Which of the following is a possible solution to the problem?

Options:

A.

Stub must be configured on Area 1 of router R1, and removed from Area 1 on router R3.

B.

Stub must be configured on Area 1 of router R1 and Area 1 of router R3.

C.

Stub must be configured on Area 0 of router R1 and Area 1 of router R3.

D.

Area 1 of router R3 should be Area 0, in order to connect via stub to router R1.

Question 45

Click on the exhibit.

What type of OSPFv3 LSA is shown?

Options:

A.

Router LSA

B.

Network LSA

C.

Intra-Area Prefix LSA

D.

Link LSA

Question 46

Click on the exhibit.

Router R1 distributes its globally routed address and its loopbacks into IS-IS. Routers R2 and R4 have their globally routed addresses in IS-IS.

How many routes will router R4 have in its IPv6 route table?

Options:

A.

2

B.

3

C.

4

D.

5

E.

6

F.

7

Question 47

Which field of an IPv6 header indicates an upper layer protocol carried in the packet?

Options:

A.

Next Header

B.

Traffic Class

C.

Flow Label

D.

Payload Length

E.

Options

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