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Nokia 4A0-F10 Exam Syllabus Topics:

Section	Objectives
Topic 1: Management interfaces and automation	- Telemetry and automation concepts - YANG data models - NETCONF - CLI fundamentals
Topic 2: Software Defined Access Network (SDAN)	- Network topology and service health - Subscriber and service management - Corteca platform - Altiplano Access Controller
Topic 3: Service delivery and operations	- Network monitoring and troubleshooting - Voice, Internet and IPTV services - Service provisioning - High-Speed Internet (HSI)
Topic 4: Fixed network architectures and broadband access	- Passive Optical Networks (PON) - FTTH and FTTx technologies - Optical Distribution Network (ODN) - Broadband network architecture - Fixed Wireless Access (FWA)
Topic 5: Nokia fixed access portfolio	- Home networking devices - Lightspan FX and MF Optical Line Terminals - Optical Network Terminals (ONTs) - FastMile FWA solutions

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Nokia Fixed Networks Fundamentals Sample Questions (Q35-Q40):

NEW QUESTION # 35
Where should multicast traffic ideally be replicated in a bandwidth-efficient access network?

A. On every access port regardless of multicast group membership
B. At every receiver before the multicast stream enters the network
C. At the source once for every possible subscriber, including nonmembers
D. Only at points where the delivery path branches toward interested receivers

Answer: D

Explanation:
Multicast is bandwidth-efficient because one stream can be transported across shared network sections and replicated only where paths diverge toward interested receivers. Routers and multicast-aware switching functions use membership and forwarding information to determine which interfaces require a copy. This approach avoids sending a separate end-to-end unicast stream for every viewer and avoids flooding the content to subscribers who did not join the group. IGMP reports communicate receiver membership on IPv4 access networks, while IGMP snooping helps Layer 2 devices restrict forwarding to appropriate ports. Replicating content for every possible subscriber at the source would remove much of multicast's scaling advantage. Likewise, transmitting every stream on every access port would waste bandwidth and could expose receivers to large amounts of unwanted traffic.

NEW QUESTION # 36
Which characteristic distinguishes G.fast from traditional ADSL technologies?

A. G.fast commonly uses high frequencies and time-division duplexing over short copper loops.
B. fast is designed to deliver high broadband rates over relatively short copper loops, frequently using existing building or drop wiring. It uses a much wider and higher-frequency spectrum than traditional ADSL and commonly employs Time Division Duplexing. With TDD, upstream and downstream transmission use the same frequency spectrum during different time intervals. The upstream-to-downstream capacity ratio can therefore be adjusted through the TDD configuration. Higher frequencies can support greater capacity but experience substantial attenuation over distance, which is why G.fast is best suited to short loops. It does not operate through passive optical splitters, although fiber may be deployed close to the subscriber before the final copper segment. G.fast also supports broadband services rather than voice-only delivery.
C. G.fast requires a separate copper pair for upstream and downstream traffic.
D. G.fast operates only over passive optical splitters.
E. G.fast carries only voice services and does not support broadband data.

Answer: A

NEW QUESTION # 37
Which Altiplano intent is used to define the uplink interfaces that connect an OLT toward the aggregation network?

A. Uplink-connection intent
B. Subscriber-authentication intent
C. Wi-Fi-radio intent
D. Multicast-report intent

Answer: A

Explanation:
The uplink-connection intent defines how an OLT connects toward the aggregation or transport network. It is used to configure relevant uplink resources, which can include network-facing interfaces and associated parameters supported by the device and intent model. This intent is distinct from the broader device intent and device-configuration information used to identify and configure the particular access node and its assigned profiles. Subscriber authentication, Wi-Fi radio operation, and multicast membership reporting are separate functional areas and are not substitutes for the OLT uplink-connection intent. By representing uplink connectivity as an intent, Altiplano can translate the desired connection into lower-level device configuration and apply it consistently through model-driven management. The resulting configuration must still match the capabilities and physical resources available on the selected OLT.

NEW QUESTION # 38
Why does an access automation platform store operational state, logs, and telemetry in a common data lake?

A. To replace every physical access device with stored records
B. To support centralized analysis, monitoring, and automation
C. To prevent applications from accessing historical information
D. To convert unicast subscriber traffic into multicast traffic

Answer: B

Explanation:
A common data lake provides a centralized location for operational state, telemetry, logs, alarms, and other information collected from access-network devices and applications. Centralized data enables monitoring tools to correlate information across multiple nodes, evaluate network health, identify trends, and support analytics-driven automation. Historical data can also assist with troubleshooting, performance baselining, capacity planning, and detection of abnormal behavior. The data lake does not replace physical access devices; it stores information describing their operation. It is intended to make relevant information available to authorized applications rather than prevent historical access. It also does not automatically transform subscriber unicast traffic into multicast. Forwarding behavior is controlled through service and network configuration, whereas the data lake supports visibility, analysis, and operational decision-making.

NEW QUESTION # 39
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?

A. One untagged VLAN for the entire access network
B. VLAN per service
C. VLAN per subscriber
D. One VLAN for every multicast channel

Answer: C

Explanation:
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.

NEW QUESTION # 40
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