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| Section | Objectives |
|---|---|
| Home Network | - Home network device management - Home network connectivity - Wi-Fi fundamentals - Home network devices |
| Access Network | - Access network architecture - Multicast protocols for video distribution - Quality of Service (QoS) fundamentals - Optical Line Terminal (OLT) functionality |
| Broadband Services | - High-speed Internet services - Value-added and triple-play services - Intent mapping to network layers - Intent-Based Networking (IBN) - Voice services - IPTV services - Lightspan service components |
| Introduction to Fixed Networks | - FTTH concepts and solutions - Broadband network fundamentals - Fixed Wireless Access (FWA) - Broadband access services - FTTx concepts and solutions |
| Fixed Networks Management | - NFV and SDN fundamentals - Altiplano SDAN Controller - Corteca home device controller - IPFIX telemetry collection - Nokia SDAN solution - NETCONF and YANG |
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NEW QUESTION # 14
A network controller must modify configuration data stored on a NETCONF-capable access device. Which NETCONF operation is designed for this purpose?
Answer: D
Explanation:
The NETCONF <edit-config> operation is used to create, change, merge, replace, or delete configuration data in a target configuration datastore. The target can be a datastore such as running or candidate, depending on the capabilities supported by the network device. By comparison, <get-config> retrieves configuration data and does not modify it. <close-session> requests an orderly termination of the current NETCONF session, while <kill-session> forces the termination of another session identified by its session ID. NETCONF operations are carried within RPC messages and commonly transported over a secure protocol such as SSH. YANG models define the structure, types, constraints, and relationships of the configuration and operational data manipulated through NETCONF.
NEW QUESTION # 15
What is the primary function of the cladding in an optical fiber?
Answer: D
NEW QUESTION # 16
Which traffic-delivery method is commonly used for a live IPTV channel watched simultaneously by many subscribers?
Answer: C
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 # 17
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 # 18
Which transport protocol is commonly used to provide a secure connection for NETCONF sessions?
Answer: A
Explanation:
NETCONF is commonly transported over Secure Shell, which provides encryption, integrity protection, and peer authentication for the management session. After establishing the secure transport connection, the client and server exchange NETCONF capabilities and use RPC messages to retrieve or modify device data. IGMP manages IPv4 multicast group membership and does not provide a secure management transport. ARP resolves IPv4 addresses to Layer 2 hardware addresses within a local network. SIP establishes and manages communication sessions such as voice calls. Although NETCONF can conceptually operate over supported secure transports, NETCONF over SSH is the widely recognized deployment model. Secure transport is particularly important because NETCONF can expose operational information and perform configuration changes that materially affect access-network devices and subscriber services.
NEW QUESTION # 19
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