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| Section | Objectives |
|---|---|
| Fixed network architectures and broadband access | - Optical Distribution Network (ODN) - FTTH and FTTx technologies - Passive Optical Networks (PON) - Broadband network architecture - Fixed Wireless Access (FWA) |
| Service delivery and operations | - High-Speed Internet (HSI) - Service provisioning - Voice, Internet and IPTV services - Network monitoring and troubleshooting |
| Management interfaces and automation | - CLI fundamentals - Telemetry and automation concepts - NETCONF - YANG data models |
| Nokia fixed access portfolio | - Home networking devices - FastMile FWA solutions - Optical Network Terminals (ONTs) - Lightspan FX and MF Optical Line Terminals |
| Software Defined Access Network (SDAN) | - Network topology and service health - Altiplano Access Controller - Corteca platform - Subscriber and service management |
これは高効率の時代であり、Nokiaおそらく4A0-F10証明書を通じてのみ競争力を証明する方法が最も簡単です。 ただし、他の問題に巻き込まれる可能性があるため、多くの人にとって時間は限られています。Pass4Test 4A0-F10学習教材を使用すると、すべての問題が疑いなく簡単に解決されます。 信頼できる有効な4A0-F10試験トレントだけでなく、最も柔軟な学習方法も提供できます。 また、他の多くのお客様と同様に、Nokia Fixed Networks Fundamentals試験に合格する必要があることを確認できます。
質問 # 23
In a Lightspan High-Speed Internet service architecture, what is the role of the HSI VPLS on the IHUB?
正解：B
解説：
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.
質問 # 24
A provider wants to separate every subscriber's traffic throughout the access network, even when subscribers use the same service. Which VLAN model best meets this requirement?
正解：C
解説：
A VLAN-per-subscriber model assigns a distinct VLAN context to each subscriber, providing clear Layer 2 separation between subscribers even when they consume the same service. This can simplify subscriber identification and support individual policy or forwarding treatment, but it requires the network to accommodate a larger number of VLANs. In a VLAN-per-service model, multiple subscribers using the same service can share a service VLAN toward the aggregation network. The access node must then preserve subscriber isolation through other forwarding controls and map traffic correctly between subscriber-facing and network-facing interfaces. Using one untagged VLAN for the entire access network provides insufficient segmentation. Assigning a VLAN to each multicast channel categorizes content rather than uniquely separating individual subscribers and therefore does not meet the stated requirement.
質問 # 25
In intent-based networking, what does an operator primarily specify through an intent?
正解：C
解説：
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.
質問 # 26
What is the primary purpose of vectoring in a DSL access network?
正解：D
解説：
DSL vectoring is primarily used to reduce or cancel far-end crosstalk between copper pairs operating within the same cable bundle. Crosstalk can significantly reduce the attainable data rate, particularly with high-frequency technologies such as VDSL2. A vectoring system measures interference among coordinated lines and generates compensating signals that counteract the crosstalk. This can improve connection stability and allow lines to operate closer to their theoretical performance. Vectoring is different from bonding. Bonding combines the capacity of multiple physical copper pairs to increase the aggregate subscriber bitrate. Vectoring also does not divide optical signals because that is the function of a splitter in a passive optical network. Its effectiveness generally depends on coordinating the relevant DSL lines through compatible access equipment.
質問 # 27
What is the primary function of the cladding in an optical fiber?
正解：D
解説：
The cladding surrounds the optical fiber core and has a lower refractive index than the core. This difference causes light to remain confined within the core through total internal reflection, allowing the optical signal to travel along the fiber. The cladding does not generate or amplify light; transmitters and optical amplifiers perform those functions. It also does not divide an optical signal among subscribers, which is the role of a passive optical splitter in an Optical Distribution Network. Outside the cladding, protective coatings and buffers help protect the glass from moisture, bending, and mechanical damage. The core and cladding therefore perform essential optical functions, while the surrounding protective layers primarily provide physical protection.
質問 # 28
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