Important Nokia 4A0-F10 Exam Questions

Answer: A

Explanation:

An intent describes the desired network outcome or target state rather than requiring the operator to manually enter every device-level command. The intent system maps the requested outcome to the configurations and resources needed on the relevant network elements. It can then compare the intended state with the observed operational state and take corrective action when supported. Intent types, profiles, and associated models provide the logic and parameters required for this translation. An intent does not normally specify the electrical construction of hardware or list every packet to be forwarded. Optical measurements may be used as operational inputs, but they are not the general definition of an intent. This abstraction improves consistency, supports automation, and reduces repetitive device-by-device configuration work.

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Answer: A

Explanation:

A Layer 3 residential gateway normally operates as a DHCP server on the subscriber's home LAN. It assigns private IP addresses and other configuration information, such as the default gateway and DNS server addresses, to connected devices. On its network-facing WAN interface, the gateway may operate as a DHCP client to obtain service parameters from the operator's network. These two DHCP roles must not be confused. The gateway also commonly performs routing, Network Address Translation, firewall enforcement, and local Ethernet or Wi-Fi connectivity. The OLT transports and controls subscriber access traffic but does not normally allocate private LAN addresses directly to individual home devices. This architecture separates the operator-facing connection from the subscriber's private local network and allows multiple home devices to share the broadband service.

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Answer: A

Explanation:

A voice-capable ONT commonly contains a SIP agent that handles signaling toward the operator's SIP registrar and proxy infrastructure. An analog telephone can connect to a telephone interface on the ONT, which converts between the analog user interface and the packet-based voice service. Within the access node, voice traffic can be carried through a voice forwarder and an appropriate VPLS toward the aggregation network. A passive optical splitter merely divides optical power and cannot originate or terminate SIP signaling. A Wi-Fi mesh satellite extends wireless coverage, while IGMP snooping manages Layer 2 forwarding for multicast groups. SIP signaling establishes and manages communication sessions, whereas the actual media stream is commonly carried separately using a real-time transport protocol once the call has been established.

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Answer: A

Explanation:

The NFV Orchestrator coordinates the lifecycle of network services composed of one or more virtualized network functions and helps coordinate the infrastructure resources required by those services. It can work with Virtual Network Functions Managers and Virtualized Infrastructure Managers during service instantiation, scaling, modification, and termination. The VNFM focuses on the lifecycle of VNF instances, while the VIM manages virtualized compute, storage, and networking resources. The NFV Orchestrator does not terminate GPON optical signals, manage individual home Wi-Fi radio channels as its primary function, or perform physical fiber installation. Its higher-level coordination role helps translate a network-service definition into the deployment and resource actions necessary to create and maintain that service within the virtualized environment.

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Answer: A

Explanation:

The HSI VPLS on the integrated hub provides the Layer 2 switching context used to carry High-Speed Internet traffic between HSI forwarders and the network-facing side of the access node. Subscriber traffic arriving through an ONT is associated with an HSI forwarder on the relevant line termination resources. The forwarder connects that traffic to the HSI VPLS, which then switches it toward one or more NNIs leading to the aggregation network. The VPLS does not perform optical-to-analog voice conversion, Wi-Fi radio management, or DSL vectoring. Those functions belong to different service components or technologies. This logical service architecture allows subscriber-facing resources and network-facing interfaces to participate in a controlled Ethernet forwarding domain while supporting the required service separation and policies.

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