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Nokia 4A0-F10 Exam Syllabus Topics:

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

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Nokia Fixed Networks Fundamentals Sample Questions (Q36-Q41):

NEW QUESTION # 36
Which Altiplano intent is used to define the uplink interfaces that connect an OLT toward the aggregation network?

Answer: B


NEW QUESTION # 37
How does an ADSL connection support simultaneous traditional voice and broadband data over the same copper pair?

Answer: B

Explanation:
ADSL uses frequency-division techniques to place traditional analog voice and broadband data in different portions of the available copper-pair spectrum. The lower-frequency range is reserved for voice, while higher-frequency ranges carry upstream and downstream DSL data. Filters or splitters separate these frequency ranges at the subscriber and network sides, allowing a telephone call and an Internet session to operate simultaneously. The services are not required to alternate in time, and an optical wavelength is not involved because ADSL operates over copper. GPON time-slot scheduling applies to upstream transmissions from ONTs on a passive optical network, not to ADSL voice separation. Line quality, loop length, attenuation, and interference affect the data rate that ADSL can achieve.


NEW QUESTION # 38
What is the primary purpose of vectoring in a DSL access network?

Answer: B

Explanation:
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.


NEW QUESTION # 39
In a GPON system using Dynamic Bandwidth Allocation, which device determines when an ONT may transmit upstream traffic?

Answer: B

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 # 40
In a voice service delivered through an ONT, which component commonly provides signaling toward the operator's SIP infrastructure?

Answer: C

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 # 41
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