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4A0-C01 Nokia NRS II Composite Exam Free Practice Exam Questions (2025 Updated)

Prepare effectively for your Nokia 4A0-C01 Nokia NRS II Composite Exam certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.

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Total 852 questions

What are the types of routers in an IS-IS topology? Choose all that apply.

A.

Level 0

B.

Level 1

C.

Level 2

D.

Level 0/1

E.

Level 1/2

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?

A.

Option A

B.

Option B

C.

Option C

D.

Option D

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

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

Which of the following is not one of the MT topologies defined for IS-IS?

A.

IPv4 In-Band Management

B.

IPv6 Routing

C.

IPv4 Multicast Routing

D.

IPv6 Multicast Routing

E.

All of the above are MT topologies defined for IS-IS.

Which of the following TLV fields is included in an IS-IS Hello packet?

A.

Area addresses TLV

Intermediate system neighbors

TLV Authentication information TLV

B.

Intermediate system neighbors

TLV Area addresses

TLV LSP entries TLV

C.

The IP internal reachability information

TLV Area Addresses

TLV Authentication Information TLV

D.

The IP external reachability information

TLV Area addresses

TLV Intermediate system neighbors TLV

In an IP datagram, which field identifies the receiving application

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

What are some of the characteristics of Alcatel-Lucent's implementation of non-stop routing? (Choose two)

A.

No protocol extensions required

B.

Only supported by OSPF and IS-IS

C.

Transparent to routing neighbors

D.

Uses Graceful Restart to inter-operate with other vendors

What is the value of the protocol discriminator used to denote IS-IS protocol information?

A.

89

B.

87

C.

85

D.

83

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.

A.

Not So Stubby Area

B.

Stub Area

C.

Backbone Area

D.

Standard Area

How are IS-IS LSPs sent on point-to-point links?

A.

They are sent using multicast MAC addresses 0180:0200:0014.

B.

They are sent using multicast MAC addresses 0180:c200:0015.

C.

They are sent using a unicast address.

D.

None of the above.

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

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.

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

A.

An L1/L2 router can have neighbors 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 its L1 neighbors.

D.

An L1/L2 router sets the ATT bit in L1 LSPs to identify itself as an L1 router.

What is the default inbound metric for RIP on the Alcatel-Lucent 7750 SR?

A.

Whatever the advertised metric happens to be.

B.

A value of 1.

C.

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

D.

A value of 15.

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

A.

Routers broadcast the entire route table to all neighbors.

B.

Information about directly connected links is sent to all neighbors.

C.

An adjacency database is maintained by each router.

D.

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

E.

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

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

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.

A router sets the E bit in the flags of its Type 1 LSA. What does this indicate?

A.

The router is an ABR.

B.

The router is an ASBR.

C.

The router is at the end of a virtual link.

D.

The router's interface is in a stub area.

Exhibit

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

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

Which of the following statements regarding link state protocols are true? (Choose two)

A.

When a router receives updates from its neighbors, it adds them to its link state database, performs an SPF computation, and sends the results to its neighbors.

B.

An SPF computation is done by each router to determine the best path to destination networks. All the best paths determined by the SPF calculation will be seen in the route table.

C.

Each router constructs its own link state database with updates received from neighbors.

D.

An SPF computation is done by each router to determine the best path to destination networks. All the best paths determined by the SPF calculation will be offered to the route table manager.

What type of OSPF router generates a type 2 LSA?

A.

Area Border Router

B.

Autonomous System Boundary Router

C.

Designated Router

D.

All routers within an OSPF area.

What is wrong with the following filter configuration from an Alcatel-Lucent 7750 SR?

RTR-B# configure filter

RTR-B>config>filter# ip-filter 1 create

RTR-B>config>filter>ip-filter$ entry 1 create

RTR-B>config>filter>ip-filter>entry$ match src-ip 172.2.0.0/16

RTR-B>config>filter>ip-filter>entry# action drop

RTR-B# configure router interface toRTR-A

RTR-B>config>router>if# egress

RTR-B>config>router>if>egress# filter ip 1

A.

There is nothing wrong with this filter

B.

The filter should be applied to the ingress and not the egress.

C.

The mask cannot be a "/" value, it must be in dotted decimal.

D.

All traffic is being blocked

Which one of the commands below will create a static route to network 2.3.4.0/24 on the AlcatelLucent 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

Two IS-IS L1/L2 routers are in the same area on the same Ethernet segment. How many adjacencies will be formed between them?

A.

None

B.

1

C.

2

D.

3

E.

4

What command is used on the Alcatel-Lucent 7750 SR to define the default action to be taken if a packet does not match any entry in an IP filter?

A.

config>filter# default-action XXX

B.

config>filter>ip-filter# default-action XXX

C.

config>filter# default-mode XXX

D.

config>filter>ip-filter# default-mode XXX

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

A.

Router LSA

B.

Network LSA

C Summary network LSA

C.

Summary router LSA

D.

Type 5 (AS external) LSAs

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

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

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

A.

Fast reroute capability

B.

Control traffic prioritization

C.

Route redistribution

D.

Traffic engineering extensions

E.

Cut through forwarding

Which of the following cannot be used as a matching criterion in route policy statements?

A.

Source IP address

B.

TCP source port

C.

Prefix list

D.

Protocol type

Click the exhibit button.

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

A.

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.

B.

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.

C.

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.

D.

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.

Which of the following OSPFv3 LSAs have an AS scope?

A.

Link Local LSA

B.

Router LSA

C.

Network LSA

D.

Inter-Area Router LSA

E.

Intra-Area Prefix LSA

F.

None of the above LSAs have an AS scope.

Click the exhibit button.

If router R2 redistributes the IS-IS route to 192.168.3.0/24 into OSPF, router R3 preference of these two routes? Choose two answers.

A.

The OSPF internal preference

B.

The IS-IS Level 1 internal preference

C.

The IS-IS Level 2 internal preference

D.

The OSPF external preference

E.

The IS-IS Level 2 external preference

F.

The IS-IS Level 1 external preference

What command will show the IS-IS neighbors, and their status on an Alcatel-Lucent 7750 SR?

A.

Show isis neighbors

B.

Show router isis neighbors

C.

Show router isis adjacency

D.

Show isis adjacency

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

A.

show router ospf area

B.

show router ospf neighbor

C.

show router ospf interface

D.

show router ospf status

Click the exhibit button.

192.168.3.1 is a loopback interface on router R2 and is distributed to OSPF area 0, but the ping fails from router R3. Which of the following is a possible solution to the problem?

A.

Add the "originate-default-route" option in the NSSA area configuration on router R3

B.

Add the "summaries" option to the NSSA area configuration on router R1

C.

Make a static route on router R1 to 192.168.3.1

D.

Make a default route on router R2

Click the exhibit button.

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

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.

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?

A.

10.10.10.99

B.

10.10.10.66

C.

10.10.10.2

D.

10.10.10.1

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

A.

5 and 15 seconds

B.

10 and 30 seconds

C.

5 and 20 seconds

D.

10 and 40 seconds

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

A.

Not so stubby area

B.

Stub area

C.

Backbone area

D.

Normal area

What address is used when RIPv2 uses multicast to send its updates?

A.

224.0.0.5

B.

224.0.0.6

C.

224.0.0.9

D.

224.0.0.10

E.

RIPv2 does not have support for multicast

Click the exhibit button.

What is the command to configure a static route on the 7750 service router R1 to reach the network behind router R2?

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

What is the term used for the updates sent by IS-IS?

A.

Link State PDUs

B.

Link State Updates

C.

Link State Advertisements

D.

Intermediate System Update Packets

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