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Total 74 questions
Exam Code: 4A0-103                Update: Oct 16, 2025
Exam Name: Alcatel-Lucent Multi Protocol Label Switching

Nokia Alcatel-Lucent Multi Protocol Label Switching 4A0-103 Exam Dumps: Updated Questions & Answers (October 2025)

Question # 1

Which of the following routing protocols are supported on the Alcatel-Lucent 7750 SR to enable constraint-based LSPs? (Choose two)

A.

RIPv2-TE

B.

CSPF

C.

OSPF-TE

D.

ISIS-TE

E.

RSVP-TE

Question # 2

Click on the exhibit button below.

Consider the following:

    Routers R1 and R4 are in Area 1.

    Routers R4 and R5 in Area 0.

    Routers R5 and R3 are in Area 2.

To support LDP-over-RSVP tunnels between routers R1 and R3 over path R1-R4-R5-R3, with which routers will router R5 require targeted sessions? (Choose two)

A.

Router R1

B.

Router R4

C.

Router R2

D.

Router R3

Question # 3

What is the common usage of the MPLS EXP bits?

A.

Each implementation can use them as they see fit.

B.

They are used to carry the Ethertype value.

C.

They are used to carry the TTL value.

D.

They are used to carry QoS classification.

E.

They are used to carry fragmentation flag information

Question # 4

Router R4 originates 500 RSVP signaled LSPs with default hello and refresh timer settings If the only downstream communication fails (link is operationally UP), how long will RSVP wait before it declares the RSVP sessions down?

A.

3000ms

B.

9000ms

C.

30000ms

D.

120000ms

Question # 5

Which of the following prerequisites must you configure on a router to enable LDP-over-RSVP support? (Choose two)

A.

Configure the T-LDP peers for tunneling.

B.

Configure tunneled T-LDP sessions between PE routers.

C.

Enable Idp-over-rsvp in the IGP configuration on the PEs and ABRs

D.

Enable LSP stitching on the RSVP LSPs

Question # 6

Which of the following are functions of the MPLS control plane in a router? (Choose two)

A.

Label allocation and management.

B.

Label swapping.

C.

Pushing a label on an unlabeled packet.

D.

Label signaling.

E.

Routing lookups.

Question # 7

Click on the exhibit button below.

Which fields in this output uniquely identify the RSVP session belonging to a single LSP? (Choose three)

A.

Tunnel ID

B.

Name

C.

LSP ID

D.

To

Question # 8

Click on the exhibit button below.

Given the configuration shown, how much of a link's 100Mbps reservable bandwidth can an LSP access when configured for class-type 0 and priority 1?

A.

10Mbps

B.

20Mbps

C.

30Mpbs

D.

60Mbps

E.

70Mbps

Question # 9

Which of the following statements is true when the implicit null is implemented?

A.

The penultimate router will POP the top label from the packets.

B.

The eLER will receive packets with a top label value of 3.

C.

The eLER will receive packets with a top label value of 0.

D.

The penultimate router will always receive unlabeled packets.

E.

The penultimate router performs a double lookup on the packet.

Question # 10

How many bits of the MPLS header are used for the label field?

A.

16

B.

20

C.

24

D.

25

E.

32

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Total 74 questions

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TESTED 16 Oct 2025