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Nokia 4A0-F10 Exam Syllabus Topics:

Section	Objectives
Broadband Services	- Lightspan service components - Internet, IPTV and voice services
Access Network	- Access network architecture - Multicast and QoS principles - OLT functions
Fixed Networks Management	- Netconf/YANG and telemetry - Altiplano Software-Defined Access Network (SDAN) - NFV and SDN concepts
Home Network	- Wi-Fi fundamentals - Home devices and connectivity
Introduction to Fixed Networks	- Broadband access fundamentals - FTTH, FTTx and FWA solutions

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Nokia Fixed Networks Fundamentals Sample Questions (Q23-Q28):

NEW QUESTION # 23
A QoS policy examines a packet's markings and assigns it to a forwarding class. Which QoS function is being performed?

A. Policing
B. Optical amplification
C. Shaping
D. Classification

Answer: D

Explanation:
Classification examines packet information and determines how the packet should be treated by the QoS system. The decision can use fields such as VLAN priority, Differentiated Services Code Point, protocol information, or interface context. After classification, the packet is assigned to an appropriate forwarding class and queue so that scheduling, congestion management, and other policies can provide the intended treatment. Shaping controls an outgoing rate by buffering excess traffic, while policing enforces a traffic profile by dropping or remarking nonconforming packets. Optical amplification increases optical signal power and is unrelated to packet classification. Effective classification is essential when a fixed-access network carries services with different requirements, such as voice, IPTV, management traffic, and best-effort Internet access.

NEW QUESTION # 24
In a GPON system using Dynamic Bandwidth Allocation, which device determines when an ONT may transmit upstream traffic?

A. Optical line termination
B. Passive optical splitter
C. Ethernet aggregation switch
D. Residential gateway

Answer: A

Explanation:
The OLT controls upstream access to the shared GPON medium. Multiple ONTs use the same upstream wavelength, so uncoordinated transmissions could overlap and cause collisions. Through Dynamic Bandwidth Allocation, the OLT evaluates bandwidth requirements and assigns upstream transmission grants to the ONTs. These grants specify when an ONT can transmit and how much upstream capacity it may use. Traffic containers, or T-CONTs, help represent different upstream traffic and service requirements. The passive splitter cannot schedule traffic because it has no processing capability. The residential gateway handles subscriber-side functions, while an aggregation switch forwards Ethernet traffic beyond the access network. Centralized upstream scheduling enables efficient bandwidth sharing and helps the operator support different service priorities and performance commitments across subscribers.

NEW QUESTION # 25
What is the primary function of the cladding in an optical fiber?

A. To divide one optical signal among multiple subscribers
B. To convert electrical signals into optical signals
C. To amplify optical signals over long distances
D. To keep light confined within the fiber core

Answer: D

NEW QUESTION # 26
What is a typical function of the Network Termination card in a Nokia Lightspan access node?

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

Answer: C

Explanation:
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.

NEW QUESTION # 27
What is the primary purpose of Zero-Touch Provisioning for a newly installed residential Wi-Fi gateway?

A. To allow the gateway to obtain its required configuration automatically
B. To convert the gateway into a passive optical splitter
C. To require a technician to configure every parameter locally
D. To prevent the gateway from contacting a management platform

Answer: A

Explanation:
Zero-Touch Provisioning allows a newly connected gateway or Wi-Fi device to discover the appropriate management environment and obtain its required configuration with minimal manual intervention. This reduces installation time, lowers the chance of configuration errors, and makes subscriber self-installation more practical. In a managed home-network solution, the device can be associated with the subscriber, receive service parameters, and become visible to the provider's management platform. Zero-Touch Provisioning does not mean that no configuration exists; it means the configuration is delivered automatically instead of being entered locally by a technician. It also does not prevent management communication or turn an active gateway into a passive device. Successful provisioning still depends on network connectivity, device identity, authorization, and compatible management procedures.

NEW QUESTION # 28
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