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| Section | Objectives |
|---|---|
| Topic 1: Broadband Services | - Lightspan service components - Intent-Based Networking (IBN) - Voice services - Intent mapping to network layers - IPTV services - Value-added and triple-play services - High-speed Internet services |
| Topic 2: Introduction to Fixed Networks | - FTTH concepts and solutions - Broadband network fundamentals - FTTx concepts and solutions - Fixed Wireless Access (FWA) - Broadband access services |
| Topic 3: Fixed Networks Management | - NFV and SDN fundamentals - IPFIX telemetry collection - Corteca home device controller - Nokia SDAN solution - Altiplano SDAN Controller - NETCONF and YANG |
| Topic 4: Access Network | - Multicast protocols for video distribution - Optical Line Terminal (OLT) functionality - Access network architecture - Quality of Service (QoS) fundamentals |
| Topic 5: Home Network | - Home network devices - Wi-Fi fundamentals - Home network device management - Home network connectivity |
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NEW QUESTION # 18
A YANG model specifies that a configuration leaf can contain an integer from 1 through 4094. What is the principal benefit of this restriction?
Answer: A
Explanation:
YANG can define data types, ranges, patterns, mandatory nodes, default values, and relationships between configuration elements. A range restriction allows management software and network devices to verify that a submitted value falls within the permitted limits. For example, restricting a VLAN-related integer to an appropriate range prevents clearly invalid values from being accepted. This model-driven validation reduces configuration errors and makes automation more predictable. A passive optical splitter has no processing capability and cannot correct invalid configuration. The restriction also does not convert a value into an Ethernet frame or prevent NETCONF access. Instead, NETCONF can carry configuration data structured according to the YANG model, and the server can reject an <edit-config> request when the proposed data violates applicable schema constraints.
NEW QUESTION # 19
In intent-based networking, what does an operator primarily specify through an intent?
Answer: C
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 # 20
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 # 21
In an 802.1X-based subscriber authentication design, which role does the residential gateway normally perform?
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 # 22
Which Wi-Fi 7 capability allows a compatible device to use more than one frequency-band link as part of the same connection?
Answer: D
NEW QUESTION # 23
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