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The Alcatel-Lucent Multi Protocol Label Switching (4A0-103)

Passing Nokia SRC Certification exam ensures for the successful candidate a powerful array of professional and personal benefits. The first and the foremost benefit comes with a global recognition that validates your knowledge and skills, making possible your entry into any organization of your choice.

4A0-103 pdf (PDF) Q & A

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4A0-103 PDF + Test Engine (PDF+ Test Engine)

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4A0-103 Test Engine (Test Engine)

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4A0-103 Exam Dumps
  • Exam Code: 4A0-103
  • Vendor: Nokia
  • Certifications: SRC Certification
  • Exam Name: Alcatel-Lucent Multi Protocol Label Switching
  • Updated: Mar 25, 2026 Free Updates: 90 days Total Questions: 249 Try Free Demo

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In 2026, Nokia uses variable topologies. Basic dumps will fail you.

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Nokia 4A0-103 Exam Domains Q&A

Certified instructors verify every question for 100% accuracy, providing detailed, step-by-step explanations for each.

Question 1 Nokia 4A0-103
QUESTION DESCRIPTION:

How have Traffic Engineering extensions to IS-IS been implemented?

  • A.

    By defining new LSAs for the IS-IS protocol.

  • B.

    By utilizing the OSPF opaque LSAs to maintain interoperability with OSPF routing domains

  • C.

    By defining new TE extension TLVs to the IS-IS protocol.

  • D.

    By enabling CSPF algorithm extensions that allow link state TE to be implemented.

Correct Answer & Rationale:

Answer: C

Question 2 Nokia 4A0-103
QUESTION DESCRIPTION:

Which of the following are features of RSVP-TE? Choose three answers.

  • A.

    It supports IGP-based LSPs.

  • B.

    It supports constrained path LSPs.

  • C.

    It does not support loose explicit path LSPs.

  • D.

    It is recommended for use in Traffic Engineering applications.

  • E.

    It cannot be used with facility backup fast reroute.

Correct Answer & Rationale:

Answer: A, B, D

Question 3 Nokia 4A0-103
QUESTION DESCRIPTION:

Fill in the blanks: The device at the beginning of an LSP is referred to as the_________, and the device at the end of an LSP is referred to as the ___________.

  • A.

    PE, P

  • B.

    LER, LSR

  • C.

    LSR, LER

  • D.

    iLER, eLER

  • E.

    eLER, iLER

  • F.

    P, PE

Correct Answer & Rationale:

Answer: D

Question 4 Nokia 4A0-103
QUESTION DESCRIPTION:

When a device receives a labeled packet, which of the following can occur?

  • A.

    The packet can only be forwarded as an unlabeled packet.

  • B.

    The packet can be forwarded as a labeled or unlabeled packet, depending on the received label value.

  • C.

    The packet can be forwarded as a labeled or unlabeled packet, depending on the destination IP address in the payload

  • D.

    The packet can only be forwarded as a labeled packet.

Correct Answer & Rationale:

Answer: B

Question 5 Nokia 4A0-103
QUESTION DESCRIPTION:

Click on the exhibit.

4A0-103 Q5

This policy is applied as an LDP export policy. In addition to the FECs learned from its neighbors, which FECs now appear in the router's LIB?

  • A.

    Local FECs not included in the 192.168.1.0/24 address space and the system IP FEC.

  • B.

    Only the system IP FEC appears in the LIB.

  • C.

    Any local FECs, except those with a 24-bit mask.

  • D.

    Local FECs in the 192.168.1.0/24 address space.

Correct Answer & Rationale:

Answer: A

Question 6 Nokia 4A0-103
QUESTION DESCRIPTION:

Which of the following statements regarding per-platform label space are true? Choose two answers.

  • A.

    A separate label is used for each interface that the FEC is advertised on.

  • B.

    It uses fewer label resources than a per-interface label space.

  • C.

    It is typically used when the device has ATM or Frame Relay interfaces.

  • D.

    It uses more label resources than a per-interface label space.

  • E.

    A single label may be assigned to an FEC and used across all interfaces of the same router.

  • F.

    It is only valid when the LDP peers are directly connected over an interface, and the label is only going to be used for traffic sent over that interface.

Correct Answer & Rationale:

Answer: B, E

Question 7 Nokia 4A0-103
QUESTION DESCRIPTION:

Click on the exhibit button below. Assume the following:

4A0-103 Q7

- Each router's OSPF interfaces are in the areas shown.

- Bidirectional LDP-over-RSVP tunnels extend from routers R1 to R3 and back over the path R1-R4-R5-R3.

- You enable fast reroute facility bypass on the R5-R3 RSVP LSP.

- Router R5 acts as a PLR, protecting the R5-R3 link by building a bypass tunnel through router R2.

You build a layer 2 VPN on routers R1 and R3, using the LDP-over-RSVP tunnels. What MPLS configuration step must you complete on router R2 for it to protect the end-to-end service?

  • A.

    Enable LDP on the R2-R5 interface.

  • B.

    Configure T-LDP sessions between routers R2 and R5 and R3.

  • C.

    Configure LDP-over-RSVP support on router R2.

  • D.

    Enable MPLS and RSVP on the router R2 network interfaces.

  • E.

    Enable LDP on the R2-R5 and R2-R3 interfaces.

Correct Answer & Rationale:

Answer: D

Question 8 Nokia 4A0-103
QUESTION DESCRIPTION:

Which of the following about T-LDP is FALSE?

  • A.

    Link-based and T-LDP sessions may be configured on the same LSR.

  • B.

    T-LDP supports sessions between non-directly connected devices.

  • C.

    T-LDP can be configured between directly connected devices.

  • D.

    T-LDP Hello messages are sent to a multicast address.

Correct Answer & Rationale:

Answer: D

Question 9 Nokia 4A0-103
QUESTION DESCRIPTION:

Which of the following devices receives labeled packets from the MPLS domain, removes the MPLS header, and forwards unlabeled packets outside the MPLS domain?

  • A.

    P router

  • B.

    LSR

  • C.

    eLER

  • D.

    iLER

Correct Answer & Rationale:

Answer: C

Question 10 Nokia 4A0-103
QUESTION DESCRIPTION:

Click on the exhibit button below. Assume the following:

4A0-103 Q10

- The protected path is R1-R2-R3-R6.

- Fast reroute one-to-one protection is enabled.

If the original LSP already has two labels, and router R2 has failed, how many labels will there be in packets on the detour path?

  • A.

    1

  • B.

    2

  • C.

    3

  • D.

    4

Correct Answer & Rationale:

Answer: B

A Stepping Stone for Enhanced Career Opportunities

Your profile having SRC Certification certification significantly enhances your credibility and marketability in all corners of the world. The best part is that your formal recognition pays you in terms of tangible career advancement. It helps you perform your desired job roles accompanied by a substantial increase in your regular income. Beyond the resume, your expertise imparts you confidence to act as a dependable professional to solve real-world business challenges.

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Nokia 4A0-103 SRC Certification FAQ

What are the prerequisites for taking SRC Certification Exam 4A0-103?

There are only a formal set of prerequisites to take the 4A0-103 Nokia exam. It depends of the Nokia organization to introduce changes in the basic eligibility criteria to take the exam. Generally, your thorough theoretical knowledge and hands-on practice of the syllabus topics make you eligible to opt for the exam.

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How hard is SRC Certification Certification exam?

Like any other Nokia Certification exam, the SRC Certification is a tough and challenging. Particularly, it's extensive syllabus makes it hard to do 4A0-103 exam prep. The actual exam requires the candidates to develop in-depth knowledge of all syllabus content along with practical knowledge. The only solution to pass the exam on first try is to make sure diligent study and lab practice prior to take the exam.

How many questions are on the SRC Certification 4A0-103 exam?

The 4A0-103 Nokia exam usually comprises 100 to 120 questions. However, the number of questions may vary. The reason is the format of the exam that may include unscored and experimental questions sometimes. Mostly, the actual exam consists of various question formats, including multiple-choice, simulations, and drag-and-drop.

How long does it take to study for the SRC Certification Certification exam?

It actually depends on one's personal keenness and absorption level. However, usually people take three to six weeks to thoroughly complete the Nokia 4A0-103 exam prep subject to their prior experience and the engagement with study. The prime factor is the observation of consistency in studies and this factor may reduce the total time duration.

Is the 4A0-103 SRC Certification exam changing in 2026?

Yes. Nokia has transitioned to v1.1, which places more weight on Network Automation, Security Fundamentals, and AI integration. Our 2026 bank reflects these specific updates.

How do technical rationales help me pass?

Standard dumps rely on pattern recognition. If Nokia changes a single IP address in a topology, memorized answers fail. Our rationales teach you the logic so you can solve the problem regardless of the phrasing.