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| Section | Objectives |
|---|---|
| Home Network | - Home network connectivity - Wi-Fi fundamentals - Home network device management - Home network devices |
| Access Network | - Quality of Service (QoS) fundamentals - Access network architecture - Multicast protocols for video distribution - Optical Line Terminal (OLT) functionality |
| Fixed Networks Management | - IPFIX telemetry collection - Corteca home device controller - Altiplano SDAN Controller - Nokia SDAN solution - NFV and SDN fundamentals - NETCONF and YANG |
| Introduction to Fixed Networks | - Broadband access services - FTTx concepts and solutions - FTTH concepts and solutions - Broadband network fundamentals - Fixed Wireless Access (FWA) |
| Broadband Services | - Intent mapping to network layers - Lightspan service components - Voice services - Intent-Based Networking (IBN) - IPTV services - High-speed Internet services - Value-added and triple-play services |
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NEW QUESTION # 30
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 # 31
What is the primary purpose of vectoring in a DSL access network?
Answer: A
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 # 32
Which Altiplano intent is used to define the uplink interfaces that connect an OLT toward the aggregation network?
Answer: D
NEW QUESTION # 33
Which transport protocol is commonly used to provide a secure connection for NETCONF sessions?
Answer: C
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 # 34
What is a typical function of the Network Termination card in a Nokia Lightspan access node?
Answer: D
Explanation:
The Network Termination card provides network-facing connectivity for a Lightspan access node. Its faceplate can contain connectors and optical cages used to connect the node to external aggregation, transport, management, synchronization, or other supported interfaces. The card participates in forwarding traffic between subscriber-facing line termination resources and the upstream network. It is an active component and must not be confused with a passive optical splitter in the outside plant. It also does not provide in-home Wi-Fi directly to subscriber devices; that function belongs to a residential gateway or Wi-Fi access point. Analog telephones are normally connected through voice-capable subscriber equipment, such as an ONT with appropriate telephone interfaces, rather than directly to the Lightspan NT card.
NEW QUESTION # 35
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