Real And Valid 4A0-F10 Exam Questions & Answers

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Nokia 4A0-F10 Exam Syllabus Topics:

SectionObjectives
Topic 1: Introduction to Fixed Networks- FTTH concepts and solutions
- Broadband network fundamentals
- FTTx concepts and solutions
- Broadband access services
- Fixed Wireless Access (FWA)
Topic 2: Fixed Networks Management- Altiplano SDAN Controller
- NETCONF and YANG
- IPFIX telemetry collection
- NFV and SDN fundamentals
- Corteca home device controller
- Nokia SDAN solution
Topic 3: Access Network- Quality of Service (QoS) fundamentals
- Access network architecture
- Optical Line Terminal (OLT) functionality
- Multicast protocols for video distribution
Topic 4: Home Network- Wi-Fi fundamentals
- Home network connectivity
- Home network devices
- Home network device management
Topic 5: Broadband Services- Value-added and triple-play services
- Lightspan service components
- Voice services
- IPTV services
- Intent-Based Networking (IBN)
- Intent mapping to network layers
- High-speed Internet services

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Nokia Fixed Networks Fundamentals Sample Questions (Q20-Q25):

NEW QUESTION # 20
An optical link experiences unexpectedly high signal loss immediately after a fiber cable is routed around a very tight corner. What is the most likely cause?

Answer: D

Explanation:
Macrobending occurs when an optical fiber is bent with a radius smaller than its supported minimum bend radius. The excessive bend can cause part of the optical signal to escape from the core, increasing attenuation and reducing the received optical power. This problem can appear after poor cable installation, improper storage, or routing the cable sharply around structural objects. Chromatic dispersion causes different wavelengths or spectral components of an optical pulse to travel at slightly different speeds, but it is not normally triggered by one tight physical corner. DSL crosstalk applies to copper pairs, while Dynamic Bandwidth Allocation controls upstream transmission opportunities in a PON. Correcting the cable routing and respecting the specified bend radius can remove or reduce the loss.


NEW QUESTION # 21
Which Wi-Fi 7 capability allows a compatible device to use more than one frequency-band link as part of the same connection?

Answer: D


NEW QUESTION # 22
Which component of a typical Optical Distribution Network requires no electrical power to perform its primary function?

Answer: A

Explanation:
A passive optical splitter divides an incoming optical signal into multiple output paths without requiring electrical power. It is a fundamental component of the Optical Distribution Network connecting an OLT to multiple ONTs or ONUs. The splitter does not regenerate, amplify, or actively switch the optical signal. Consequently, splitting introduces optical loss that must be considered when calculating the PON power budget. The OLT and ONT are active devices because they require power to transmit, receive, process, and convert signals. A residential gateway also requires power to provide functions such as routing, firewall enforcement, DHCP, Ethernet switching, and Wi-Fi connectivity. The use of passive splitters reduces the need for powered equipment in the outside plant, which can simplify field maintenance and lower operational costs.


NEW QUESTION # 23
What is a key characteristic of software disaggregation in an access network?

Answer: A

Explanation:
Software disaggregation separates access-network software into modules, with each module responsible for a particular functional area. Defined interfaces allow these modules to interact with one another, with higher-level applications, and with abstracted hardware resources. This architecture can improve development flexibility, automation, scalability, and the ability to introduce new functions without replacing an entire vertically integrated platform. It does not mean that all physical constraints disappear or that every module can operate on every device without adaptation. Embedding every function permanently in one appliance describes a tightly integrated architecture rather than disaggregation. APIs are important because they enable communication and programmability between components. Passive optical splitters cannot execute software because they contain no powered processing or control functions.


NEW QUESTION # 24
In a Lightspan High-Speed Internet service architecture, what is the role of the HSI VPLS on the IHUB?

Answer: D

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.


NEW QUESTION # 25
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