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| Section | Objectives |
|---|---|
| Fixed network architectures and broadband access | - Optical Distribution Network (ODN) - FTTH and FTTx technologies - Fixed Wireless Access (FWA) - Passive Optical Networks (PON) - Broadband network architecture |
| Service delivery and operations | - High-Speed Internet (HSI) - Network monitoring and troubleshooting - Voice, Internet and IPTV services - Service provisioning |
| Software Defined Access Network (SDAN) | - Network topology and service health - Altiplano Access Controller - Subscriber and service management - Corteca platform |
| Nokia fixed access portfolio | - Lightspan FX and MF Optical Line Terminals - Home networking devices - Optical Network Terminals (ONTs) - FastMile FWA solutions |
| Management interfaces and automation | - YANG data models - NETCONF - Telemetry and automation concepts - CLI fundamentals |
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NEW QUESTION # 35
Which architectural principle is fundamental to Software-Defined Networking?
Answer: C
Explanation:
A central principle of Software-Defined Networking is the separation of control logic from packet-forwarding functions. The data plane remains responsible for forwarding traffic, while logically centralized control software determines policies and programs network behavior through defined interfaces. Logically centralized does not necessarily mean that all controller functions run on one physical server; they may be distributed for scalability and resilience while presenting a coordinated control view. SDN emphasizes programmability, automation, abstraction, and the use of APIs. It does not require every forwarding device to independently make all high-level policy decisions. It also avoids tightly coupling every function into one fixed proprietary system. In fixed-access networks, these concepts help operators automate service delivery and manage different access devices through common models and controller applications.
NEW QUESTION # 36
Which traffic-delivery method is commonly used for a live IPTV channel watched simultaneously by many subscribers?
Answer: B
Explanation:
Live IPTV channels are commonly distributed using multicast because many subscribers may request the same content at the same time. The network carries a shared stream across common paths and replicates packets only where delivery paths branch toward participating receivers. Subscribers signal membership using protocols such as IGMP. This approach is more bandwidth-efficient than delivering a separate unicast copy from the source to every viewer. Video on Demand is commonly delivered using unicast because each viewer may start, pause, or seek through different content independently. NETCONF notifications carry management events rather than television content. IPTV is packet-based and does not require a separate analog transmission for every copper pair. Effective multicast deployment also depends on correct group control, snooping, routing, QoS, and service-forwarding configuration.
NEW QUESTION # 37
In intent-based networking, what does an operator primarily specify through an intent?
Answer: A
Explanation:
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.
NEW QUESTION # 38
What is a key characteristic of software disaggregation in an access network?
Answer: D
Explanation:
Software disaggregation separates access-network software into modules, with each module responsible for a particular functional area. Defined interfaces allow these modules to interact with one another, with higher-level applications, and with abstracted hardware resources. This architecture can improve development flexibility, automation, scalability, and the ability to introduce new functions without replacing an entire vertically integrated platform. It does not mean that all physical constraints disappear or that every module can operate on every device without adaptation. Embedding every function permanently in one appliance describes a tightly integrated architecture rather than disaggregation. APIs are important because they enable communication and programmability between components. Passive optical splitters cannot execute software because they contain no powered processing or control functions.
NEW QUESTION # 39
Which component of a typical Optical Distribution Network requires no electrical power to perform its primary function?
Answer: C
Explanation:
A passive optical splitter divides an incoming optical signal into multiple output paths without requiring electrical power. It is a fundamental component of the Optical Distribution Network connecting an OLT to multiple ONTs or ONUs. The splitter does not regenerate, amplify, or actively switch the optical signal. Consequently, splitting introduces optical loss that must be considered when calculating the PON power budget. The OLT and ONT are active devices because they require power to transmit, receive, process, and convert signals. A residential gateway also requires power to provide functions such as routing, firewall enforcement, DHCP, Ethernet switching, and Wi-Fi connectivity. The use of passive splitters reduces the need for powered equipment in the outside plant, which can simplify field maintenance and lower operational costs.
NEW QUESTION # 40
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