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4A0-101 Nokia Alcatel-Lucent Interior Routing Protocols and High Availability Free Practice Exam Questions (2025 Updated)

Prepare effectively for your Nokia 4A0-101 Alcatel-Lucent Interior Routing Protocols and High Availability 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 315 questions

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

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.

An OSPF ASBR must have at least one interface in the backbone area (area 0)

A.

True

B.

False

Which of the following is NOT a characteristic of RIPv1?:

A.

30 second network updates

B.

Classless routing

C.

Broadcast advertisement

D.

Poison Reverse

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

A.

89

B.

87

C.

85

D.

83

What types of routers can an IS-IS L1 router form adjacencies with? Pick all that apply.

A.

L1 routers in the same area

B.

L1 routers in other areas

C.

L2 routers in the same area

D.

L2 routers in other areas

E.

L1/L2 router in the same area

F.

L1/L2 routers in other areas

Which of the following statements regarding the election of the designated router (DR) by OSPF routers are true? (Choose two)

A.

The router with the lowest priority is the DR.

B.

The router with the highest priority is the DR.

C.

If priorities are the same, the DR is chosen based on the lowest RID.

D.

If priorities are the same, the DR is chosen based on the highest RID.

What is the metric and maximum routable value for RIP?

A.

Hop count and 16

B.

Hop count and 15

C.

Link cost and 15

D.

Link cost and 16

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

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.

What causes an adjacency to change from "Init" to "Two Way"?

A.

When a Link State Update is received in response to a Link State Request

B.

When a router receives a Hello packet from a neighbor that contains its router id in the neighbor list

C.

When OSPF neighbors exchange Database Descriptor packets

D.

When a Link State Acknowledgement is received in response to a Link State Update

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

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

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

A.

There is no such calculation in IS-IS

B.

Show router isis database

C.

Show router isis dijykstra

D.

Show router isis spf

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

A.

Metric is cost based

B.

Slow convergence

C.

Automatic summarization

D.

Support CIDR

From the list below identify two matching criteria supported for IP filters on the Alcatel-Lucent 7750 SR: (Choose two)

A.

DSCP marking

B.

Class of Service Marking

C.

DSAP marking

D.

ICMP type

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

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

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

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

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

What type of LSA is used to flood information about prefixes from one OSPF area to other attached areas?

A.

Type 1

B.

Type 3

C.

Type 4

D.

Type 7

Which of the following best describes a unicast IPv6 address?

A.

Fixed total of 128 bits, where 64 bits are used for routing and 64 bits are used as an interface identifier.

B.

Fixed total of 128 bits, where 32 bits are used for the global prefix, 32 bits are used for the subnet and 64 bits are used as an interface identifier.

C.

Variable total length, where at least 48 bits are used for the global prefix, 48 bits are used for the subnet and 64 bits are used as an interface identifier.

D.

Variable total length, where at least 64 bits are used for routing and 64 bits are used as an interface identifier

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Total 315 questions
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