4A0-100

Practice 4A0-100 Exam

Is it difficult for you to decide to purchase Alcatel Lucent 4A0-100 exam dumps questions? CertQueen provides FREE online Nokia IP network and Service fundamentals 4A0-100 exam questions below, and you can test your 4A0-100 skills first, and then decide whether to buy the full version or not. We promise you get the following advantages after purchasing our 4A0-100 exam dumps questions.
1.Free update in ONE year from the date of your purchase.
2.Full payment fee refund if you fail 4A0-100 exam with the dumps

Full 4A0-100 Exam Dump Here

Latest 4A0-100 Exam Dumps Questions

The dumps for 4A0-100 exam was last updated on Apr 04,2026 .

Viewing page 1 out of 1 pages.

Viewing questions 1 out of 8 questions

Question#1

Which of the following Nokia 7750 SR components is NOT part of the data plane?

A. The Media Dependent Adapter (MDA)

B. The Input/Output Module (IOM)

C. The eXpandable Media Adapter (XMA)

D. The Control Processor Module (CPM)

Explanation:
The Nokia 7750 SR architecture separates its operations into control plane and data plane functions. The Data Plane includes hardware components responsible for forwarding traffic at line rate.
These components include:
MDA (Media Dependent Adapter) C interfaces with physical media.
IOM (Input/Output Module) C performs high-speed packet forwarding and processing.
XMA (eXpandable Media Adapter) C extends port capacity and media support.
The Control Plane includes the CPM (Control Processor Module), which is responsible for running routing protocols, managing configuration, system operations, and other control-related functions. The CPM does not participate in data forwarding and is thus not part of the data plane.
Reference: Nokia SRA Study Guide, Chapter: "System Architecture C 7750 SR Components"
Nokia IP Networks and Services Fundamentals C Section: Control and Data Plane Functions in SR Architecture

Question#2

Which of the following statements about the OSPF routing protocol is FALSE?

A. It is a link state protocol.

B. It supports hierarchy using multiple areas.

C. It uses a mechanism for routers to exchange topology information.

D. It uses hop-count for route selection.

Explanation:
OSPF (Open Shortest Path First) is a Link-State protocol that uses:
Cost (based on bandwidth) as its metric.
Dijkstra’s algorithm to compute shortest path trees.
Supports hierarchical routing with areas (e.g., Area 0 as backbone).
Routers exchange LSAs, not full routing tables.
Option D is FALSE C OSPF does not use hop-count. That’s a RIP (Distance Vector) feature.
Reference: Nokia IP Routing Guide C Section: “OSPF Operation and Area Design” RFC 2328 C OSPFv2 Protocol Specification

Question#3

Which of the following enables service providers to support multiple customers with the same VLAN ID over the same backbone?

A. VLAN Trunking

B. VLAN Stacking

C. VLAN Tagging

D. VLAN Routing

Explanation:
VLAN Stacking, also known as Q-in-Q tunneling, is a technology that allows multiple customers to use overlapping VLAN IDs while being transported over a shared service provider network.
Key Concepts:
Customer VLAN (C-VLAN): The VLAN used by the customer in their own network.
Service VLAN (S-VLAN): The VLAN used by the service provider to encapsulate the customer VLAN.
When VLAN stacking is applied:
A customer's Ethernet frame already tagged with a C-VLAN is encapsulated with an additional outer S-VLAN tag.
This way, multiple customers can use the same C-VLAN ID, but remain isolated by the unique S-VLAN
assigned to them by the service provider.
Why Other Options Are Incorrect:
A. VLAN Trunking: Used to carry multiple VLANs over a single physical link but doesn’t allow reuse of VLAN IDs across customers.
C. VLAN Tagging: Refers to the general process of adding a VLAN tag; it doesn't provide the isolation needed across shared infrastructure.
D. VLAN Routing: Refers to Layer 3 routing between VLANs, not to ID reuse or transport over a
shared provider backbone.
Reference: Nokia Service Architecture and VPNs Study Guide C Section: “Q-in-Q VLAN Stacking” IEEE 802.1ad Standard C Provider Bridges (Q-in-Q)

Question#4

Which of the following statements about IP route summarization is FALSE?

A. It divides a customer IP address pool into smaller portions, each of which is assigned to a different subnet.

B. It reduces the size of the routers' forwarding tables.

C. It improves scalability of the network.

D. It increases routing advertisement stability.

Explanation:
Route summarization (a.k.a. supernetting) is the process of combining multiple contiguous subnets into a single summarized route, which:
Reduces routing table entries
Enhances scalability and efficiency
Minimizes instability by localizing route changes
Option A is false because it describes subnetting, not summarization. Summarization works in the opposite direction C combining smaller routes into a larger one.
Reference: Nokia IP Routing Guide C Chapter: “Route Summarization Techniques” Cisco CCNA C IP Routing Concepts

Question#5

In an MPLS network, which device is responsible for taking an unlabeled packet and encapsulating it with an MPLS label?

A. Ingress Label Edge Router

B. Egress Label Edge Router

C. Label Switching Router

D. Next-hop Router

Explanation:
The Ingress Label Edge Router (LER) is the first router that:
Receives an unlabeled IP packet.
Applies an MPLS label based on its forwarding decision.
Forwards it into the MPLS core.
Option A is correct C Ingress LER does MPLS label push.
Option B (Egress LER) C removes labels at the end of the path.
Option C (LSR) C switches labels, but doesn’t push them onto unlabeled packets.
Option D C is not a specific MPLS role.
Reference: Nokia IP/MPLS Fundamentals Guide C Label Operations
RFC 3031 C MPLS Architecture

Exam Code: 4A0-100 Q & A: 40 Q&As Updated: Apr 04,2026

Full 4A0-100 Exam Dumps Here

Exam Code: 4A0-100
Q & A: 40 Q&As
Updated: Apr 04,2026

About 4A0-100 Dumps