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Nokia 4A0-F10 Exam Syllabus Topics:

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

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Nokia Fixed Networks Fundamentals Sample Questions (Q22-Q27):

NEW QUESTION # 22
In a voice service delivered through an ONT, which component commonly provides signaling toward the operator's SIP infrastructure?

A. SIP agent on the ONT
B. IGMP snooping process
C. Passive optical splitter
D. Wi-Fi mesh satellite

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.

NEW QUESTION # 23
In an 802.1X-based subscriber authentication design, which role does the residential gateway normally perform?

A. RADIUS database
B. Authentication server
C. Multicast querier
D. Supplicant

Answer: D

Explanation:
The residential gateway normally acts as the 802.1X supplicant. It supplies identity information and participates in the Extensible Authentication Protocol exchange required to obtain network access. The access device or OLT commonly performs the authenticator role, controlling the subscriber-facing port and relaying authentication information between the supplicant and the authentication server. The authentication server, frequently using RADIUS, validates the credentials and returns an authorization result or related policy attributes. The gateway is therefore not itself the RADIUS database or authentication server in this design. A multicast querier performs a separate function by sending IGMP queries to maintain multicast membership information. Before successful authentication, the authenticator generally restricts ordinary subscriber traffic while allowing the authentication exchange required to complete access control.

NEW QUESTION # 24
Which Wi-Fi 7 capability allows a compatible device to use more than one frequency-band link as part of the same connection?

A. VLAN stacking
B. Dynamic Bandwidth Allocation
C. Multi-Link Operation
D. DSL vectoring

Answer: C

NEW QUESTION # 25
Which characteristic distinguishes G.fast from traditional ADSL technologies?

A. G.fast operates only over passive optical splitters.
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 carries only voice services and does not support broadband data.
D. G.fast commonly uses high frequencies and time-division duplexing over short copper loops.
E. G.fast requires a separate copper pair for upstream and downstream traffic.

Answer: D

NEW QUESTION # 26
A QoS policy examines a packet's markings and assigns it to a forwarding class. Which QoS function is being performed?

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

Answer: B

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 # 27
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