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Nokia 4A0-101 Nokia Interior Routing Protocols Exam Practice Test

Demo: 47 questions
Total 315 questions
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Nokia Interior Routing Protocols Questions and Answers

Question 1

Which of the statements about the output in the exhibit is FALSE?

Options:

A.

The system interface is configured with IPv6 address 2001DB8 1:100:1/128

B.

All interfaces are configured for IPv4 and IPv6.

C.

Interface "toR2" is configured with a globally routed IPv6 address.

D.

Interface "toR3" is not configured for IPv6 with a global IPv6 address.

Question 2

Refer to the exhibit below. IS-IS IPv6 routing is configured in the network with globally routed addresses 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 3

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 4

A router is configured with the command "configure router ecmp 4". There are two best paths to a given destination with an equal cost in the IGP. Which of the following best describes the handling of traffic to this destination?

Options:

A.

The router installs two routes for the destination with two different next hops. A hashing algorithm is used to distribute traffic over the two paths.

B.

The router installs two routes for the destination with two different next hops. Traffic is evenly distributed over the two paths.

C.

The router installs four routes for the destination with four different next hops. A hashing algorithm is used to distribute traffic over the four paths.

D.

The router installs four routes for the destination with four different next hops. Traffic is evenly distributed over the four paths.

E.

The router installs one route for the destination. Traffic is evenly distributed over the two paths.

Question 5

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 6

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.

Question 7

What is another term to describe the default route for a client?

Options:

A.

Black hole

B.

Default gateway

C.

Gateway path

D.

Proxy ARP

Question 8

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 9

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 10

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 11

Static routing is to be used in a network between a corporate head office with many connected networks and a branch office with one connection to the head office. Which of the following is the most likely configuration on the head office and branch office routers?

Options:

A.

The head office has a default route and the branch office has a specific static route.

B.

The head office and the branch offices both have specific static routes.

C.

The head office and the branch office both have default routes.

D.

The head office has a specific static route and the branch office has a default route

Question 12

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 13

Click on the exhibit.

The routers have an established IS-IS L2 adjacency on which IPv4 system addresses are exchanged. An operator successfully configures multi-topology IS-IS routing so that the IPv6 system addresses are also exchanged between routers.

After IPv6 has been configured, which of the following is TRUE?

Options:

A.

Router R2 has two IS-IS adjacencies and two LSPs

B.

Router R2 has two IS-IS adjacencies and three LSPs

C.

Router R2 has two IS-IS adjacencies and four LSPs

D.

Router R2 has three IS-IS adjacencies and three LSPs

E.

Router R2 has three IS-IS adjacencies and four LSPs

F.

Router R2 has three IS-IS adjacencies and six LSPs

Question 14

Click on the exhibit.

A service provider is deploying a 6 over 4 tunnel to connect a customer's corporate IPv6 network to all devices at the branch office as shown in the exhibit.

Which command is used to create the route to the branch office network on PE1?

Options:

A.

Configure router static-route 2001:DB8:1:201::/64 indirect 10.10.10.4

B.

Configure router static-route 2001:DB8:1:201:764 indirect 2001:DB8:1:200::2

C.

Configure router static-route 2001:DB8:1:200::/56 indirect 10.10.10.4

D.

Configure router static-route 2001:DB8:1:200:756 indirect 2001:DB8:1:200::2

Question 15

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 16

Which of the following concerning OSPFv3 is TRUE?

Options:

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.

Question 17

Click on the exhibit.

The routers have an established IS-IS L2 adjacency on which IPv4 system addresses are exchanged. An operator successfully configures multi-topology IS-IS routing so that the IPv6 system addresses are also exchanged between routers.

After IPv6 has been configured, which of the following is TRUE?

Options:

A.

Router R2 has two IS-IS-adjacencies and two LSPs.

B.

Router R2 has two IS-IS-adjacencies and four LSPs.

C.

Router R2 has two IS-IS-adjacencies and three LSPs.

D.

Router R2 has four IS-IS-adjacencies and six LSPs.

Question 18

A router running a link-state protocol sends an update to a neighbor. The neighbor sends an update back.

Why would the neighbor do this?

Options:

A.

The neighbor's link-state database has newer information than what it received in the update.

B.

The neighbor sends the update as an acknowledgement.

C.

The neighbor's update indicates that it has run out of space in its LSDB.

D.

The neighbor's update indicates that the sequence number received is the same as the one already in its link-state database.

Question 19

Which of the following about 6over4 is FALSE?

Options:

A.

The CE routers run only IPv6.

B.

The PE routers must run IPv4 and IPv6.

C.

The P routers must run IPv4 and IPv6.

D.

IPv6 routes on the PE routers may have an IPv4 address as the next hop.

Question 20

Which OSPFv3 LSA is similar to the OSPFv2 Type 5 LSA?

Options:

A.

AS External

B.

Inter-Area Prefix

C.

Inter-Area Router

D.

Intra-Area Prefix

Question 21

Why does IPv6 not use ARP?

Options:

A.

The ARP functionality has been replaced by the Neighbor Discovery protocol.

B.

The ARP functionality is not needed due to the increased IPv6 address space.

C.

ICMPv6 reduced its role to connectivity checking and auto-configuration only.

D.

ICMFV6 replaced the ARP functionality with Multicast Listener Discovery (MLD).

Question 22

In IS-IS, which of the following regarding an L1/L2 router is FALSE?

Options:

A.

An L1/L2 router can have adjacencies with routers in different areas.

B.

An L1/L2 router calculates separate SPF trees for the Level 1 and Level 2 topology.

C.

An L1/L2 router advertises its L2 routes to other L1 routers in the same area.

D.

An L1/L2 router sets the ATT bit in L1 LSPs to indicate that it has routes to other areas.

Question 23

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 24

An OSPF router receives an update in which the sequence number, age, and checksum are the same as the entry already in the topological database. What action does the router take?

Options:

A.

The link-state information is not populated in the database, but is forwarded to all neighbors.

B.

The link-state information already in the database is overwritten and the age is reset.

C.

The link-state information is not populated in the database and an acknowledgement is sent.

D.

The link-state information is regarded as old and nothing is done.

E.

A link-state request is performed to increase the sequence number.

Question 25

Click on the exhibit.

Before the link failure, all routers have operational OSPF adjacencies between them and there is a BFD session between routers R1 and R3.

After the link failure, which of the following affects the IGP convergence time?

Options:

A.

The convergence time depends on the value of the OSPF hello timers on routers R1 andR3.

B.

The convergence time depends on the value of the OSPF hello timers and Dead interval on routers R1 and R3.

C.

The convergence time depends on the value of the BFD interval and multiplier settings on routers R1 andR3.

D.

The convergence time depends on the time taken by the switches to detect the link failure.

Question 26

Which of the following 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.

The CSNP lists the LSPs in the router's database

Question 27

The solicited node address for the destination node address of 2001:DB8::30A:216 4DFF:FE14:6CAE is:

Options:

A.

2001::FF:FE:14:6CAE

B.

2001::1:FF:14:6CAE

C.

FF02.DB8::30A:216:4DFF:FE14.6CAE

D.

FF02::1:FF14:6CAE

Question 28

Click on the exhibit.

What type of OSPFv3 LSA is shown?

Options:

A.

Router LSA

B.

Network LSA

C.

Inter-Area Prefix LSA

D.

Link LSA

Question 29

Click on the exhibit.

Given the contents of the Router LSA, which of the following best describes the local topology of the router?

Options:

A.

The router has a system interface, one point-to-point interface and one virtual link.

B.

The router has a system interface, one passive interface, one point-to-point interface and one virtual link.

C.

The router has a system interface, one point-to-point interface and one broadcast interface.

D.

The router has a system interface, one passive interface, one point-to-point interface and one broadcast interface.

Question 30

Click on the exhibit.

Assuming point-to-point links, which of the following is TRUE?

Options:

A.

Routers R1 and R2 are L2 routers. Routers R3 and R4 are L1/L2 routers.

B.

Routers R1, R2, and R4 are L1/L2 routers Router R3 is an L1 router.

C.

Routers R1, R2, and R3 are L2 routers. Router R4 is an L1 router.

D.

Routers R1 and R2 are L1/L2 routers. Routers R3 and R4 are L1 routers.

Question 31

Click the exhibit button.

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?

Options:

A.

The prefix list reject should be "192.168.3.0/16 exact".

B.

Router R1 should be configured as an OSPF "asbr".

C.

The policy "reject" should be set for import rather than export.

D.

The policy was likely not "committed" after creation.

E.

This is not possible because OSPF cannot use import policies.

Question 32

Click the exhibit button.

In the IS-IS network shown, router R1 has been configured to summarize network 20.20.1.0/24 and 20.20.2.0/24 as 20.20.0.0/16. Which router's routing table will be reduced compared to the routing table before the summarization?

Options:

A.

Router R1

B.

Router R2

C.

Routers R1 and R2

D.

Router R4

Question 33

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 34

Which type of IS-IS router is summarization most likely to be configured on?

Options:

A.

L1 routers

B.

L2 routers

C.

L1/L2 routers

D.

L1 and L2 routers

Question 35

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

Question 36

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 37

Click the exhibit button.

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 4 LSA generation is true?

Options:

A.

Router R1 generates a type 4 LSA that is flooded to areas 0, 1, and 2.

B.

Router R3 generates a type 4 LSA that is flooded to areas 0, 1, and 2.

C.

Router R3 generates a type 4 LSA that is flooded to areas 0 and 2.

D.

Router R3 generates a type 4 LSA that is flooded to area 0, and router R6 generates a type 4 LSA that is flooded to area 2.

Question 38

What are the default Hello and Dead timer intervals for OSPF on the Alcatel-Lucent 7750 SR?

Options:

A.

5 and 15 seconds

B.

10 and 30 seconds

C.

5 and 20 seconds

D.

10 and 40 seconds

Question 39

Which of the following statements regarding IS-IS Hello packets are true? Choose two answers.

Options:

A.

Different types of Hello packets are exchanged on point-to-point networks than on broadcast networks.

B.

L1/L2 Hello packets are exchanged on broadcast links.

C.

Different L1 and L2 Hello packets are exchanged on broadcast links.

D.

By default, Hello packets are sent every 5 seconds, and the timeout to declare a neighbor down is 15 seconds.

Question 40

Which of the following statements regarding distance vectors protocols are true?

(Choose two answers).

Options:

A.

RIPv1, RIPv2, and BGP are distance vector protocols.

B.

OSPF and IS-IS are distance vector protocols.

C.

Routing tables are exchanged between neighbors; however, no routing table is transmitted beyond the immediate neighbor.

D.

Distance vector protocols use the Dijkstra SPF algorithm.

E.

Routers that participate in distance vector routing protocols maintain full knowledge of distant routers and how they interconnect

Question 41

Exhibit

Given the two configurations shown, identify the two incorrect statements below: (Choose two)

Options:

A.

Both routers will generate OSPF Hello packets.

B.

The system interface is missing in one configuration so OSPF will not operate correctly.

C.

The interface type settings differ, but OSPF will still operate correctly.

D.

Metric values differ, but this does not prevent OSPF operation.

Question 42

What value should the AFI be set to for locally administered addressing?

Options:

A.

1

B.

49

C.

83

D.

0

Question 43

In an OSPF environment, what must a router receive after it sends out an update?

Options:

A.

The router must receive an acknowledgment

B.

The router must receive a Hello

C.

The router must receive a new sequence number

D.

The router must receive a Link State Packet

Question 44

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 45

What must be configured on the Alcatel-Lucent 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

Question 46

What are the similarities between OSPF and IS-IS? Choose two.

Options:

A.

Metric is cost based

B.

Slow convergence

C.

Automatic summarization

D.

Support CIDR

Question 47

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.

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