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Nokia Certification
4A0-F10 Exam
Nokia.4A0-F10.v2026-07-05.q14 Dumps

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Question 6

A subscriber installs several coordinated Wi-Fi access points to provide consistent coverage throughout a large home. What type of solution is this?

A.Wi-Fi mesh system
B.Passive optical network
C.DSL bonding group
D.Virtual network function

Correct Answer: A

A Wi-Fi mesh system uses multiple coordinated Wi-Fi nodes or access points to extend wireless coverage across a home or other large area. The nodes operate as part of one managed system and can steer clients or select paths to improve coverage and user experience. This differs from a single Wi-Fi router, which combines routing, switching, and wireless access functions in one device but may not adequately cover a large property. A passive optical network delivers fiber access and does not describe the in-home wireless topology. DSL bonding combines copper pairs, while a virtual network function is a software implementation of a network function running on virtualized infrastructure. Placement, backhaul quality, interference, and radio-resource management all affect mesh performance.

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Question 7

What is a typical function of the Network Termination card in a Nokia Lightspan access node?

A.It provides external network-facing interfaces through faceplate connectors or optical cages.
B.It operates as the passive splitter in the Optical Distribution Network.
C.It provides Wi-Fi connectivity directly to subscriber mobile devices.
D.It terminates every analog telephone inside the subscriber's home.

Correct Answer: A

The Network Termination card provides network-facing connectivity for a Lightspan access node. Its faceplate can contain connectors and optical cages used to connect the node to external aggregation, transport, management, synchronization, or other supported interfaces. The card participates in forwarding traffic between subscriber-facing line termination resources and the upstream network. It is an active component and must not be confused with a passive optical splitter in the outside plant. It also does not provide in-home Wi-Fi directly to subscriber devices; that function belongs to a residential gateway or Wi-Fi access point. Analog telephones are normally connected through voice-capable subscriber equipment, such as an ONT with appropriate telephone interfaces, rather than directly to the Lightspan NT card.

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Question 8

Which YANG node type represents multiple scalar values under the same node name without allowing child nodes?

A.Container
B.List
C.Leaf-list
D.Choice

Correct Answer: C

A YANG leaf-list represents a sequence of scalar values of the same defined type. Like a leaf, each value is terminal and cannot contain child nodes. However, unlike a single leaf, a leaf-list can have multiple entries. A YANG list also supports multiple instances, but each list entry can contain child nodes and is normally identified by one or more key leaves. A container groups related child nodes but does not itself represent a repeated collection of scalar values. A choice defines alternative branches in a data model, allowing one set of nodes from the available cases to be selected. Correctly distinguishing these node types is important when interpreting YANG schemas used to configure and monitor access devices through model-driven management interfaces.

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Question 9

Which traffic-delivery method is commonly used for a live IPTV channel watched simultaneously by many subscribers?

A.Multicast delivery
B.Separate analog transmission over every copper pair
C.NETCONF notifications
D.Unicast only, with no packet replication in the network

Correct Answer: A

Live IPTV channels are commonly distributed using multicast because many subscribers may request the same content at the same time. The network carries a shared stream across common paths and replicates packets only where delivery paths branch toward participating receivers. Subscribers signal membership using protocols such as IGMP. This approach is more bandwidth-efficient than delivering a separate unicast copy from the source to every viewer. Video on Demand is commonly delivered using unicast because each viewer may start, pause, or seek through different content independently. NETCONF notifications carry management events rather than television content. IPTV is packet-based and does not require a separate analog transmission for every copper pair. Effective multicast deployment also depends on correct group control, snooping, routing, QoS, and service-forwarding configuration.

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Question 10

Which architectural principle is fundamental to Software-Defined Networking?

A.Separating the control plane from the data-forwarding plane
B.Requiring every forwarding device to make all policy decisions independently
C.Removing programmability and APIs from network management
D.Combining all hardware and software into one fixed proprietary component

Correct Answer: A

A central principle of Software-Defined Networking is the separation of control logic from packet-forwarding functions. The data plane remains responsible for forwarding traffic, while logically centralized control software determines policies and programs network behavior through defined interfaces. Logically centralized does not necessarily mean that all controller functions run on one physical server; they may be distributed for scalability and resilience while presenting a coordinated control view. SDN emphasizes programmability, automation, abstraction, and the use of APIs. It does not require every forwarding device to independently make all high-level policy decisions. It also avoids tightly coupling every function into one fixed proprietary system. In fixed-access networks, these concepts help operators automate service delivery and manage different access devices through common models and controller applications.

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