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| Section | Objectives |
|---|---|
| Topic 1: Access Network | - Multicast and QoS principles - Access network architecture - OLT functions |
| Topic 2: Broadband Services | - Lightspan service components - Internet, IPTV and voice services |
| Topic 3: Home Network | - Home devices and connectivity - Wi-Fi fundamentals |
| Topic 4: Fixed Networks Management | - Altiplano Software-Defined Access Network (SDAN) - NFV and SDN concepts - Netconf/YANG and telemetry |
| Topic 5: Introduction to Fixed Networks | - Broadband access fundamentals - FTTH, FTTx and FWA solutions |
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問題 #12
Which Corteca component is intended primarily for use by the subscriber during Wi-Fi installation and management?
答案：B
解題說明：
The Corteca mobile application provides subscriber-facing capabilities that can support self-installation and home Wi-Fi management. Depending on the enabled service, the subscriber can receive installation guidance, view the home network, manage connected devices, and perform supported troubleshooting or configuration tasks. The service provider uses other Corteca platform components for centralized service management, visibility, and operational control. An OLT network termination card provides access-node network connectivity and is not a subscriber application. An IPFIX collector receives traffic-flow records, while a NETCONF candidate datastore holds proposed device configuration before it is committed. Separating subscriber-facing and operator-facing functions allows the provider to offer controlled self-service capabilities without exposing the complete network-management environment or low-level access-device configuration to the end user.
問題 #13
Which Wi-Fi 7 capability allows a compatible device to use more than one frequency-band link as part of the same connection?
答案：A
問題 #14
Which transport protocol is commonly used to provide a secure connection for NETCONF sessions?
答案：B
解題說明：
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.
問題 #15
Which Lightspan interface type normally connects an access node directly to subscriber-facing equipment?
答案：B
解題說明：
A User Network Interface is the subscriber-facing interface through which an access node connects to customer-side equipment or services. Depending on the access technology, this relationship can involve ONTs, subscriber ports, or other access termination functions. A Network-to-Network Interface connects the access node toward another network device, typically the Ethernet aggregation or transport network. A subtending interface is used when one access node is connected through another access node, allowing the downstream node's traffic to reach the aggregation network through the upstream node. A loopback interface is a logical interface generally used for management, routing identification, or testing and is not a physical subscriber connection. Correctly distinguishing UNI, NNI, and subtending roles is essential when interpreting an access-node datapath.
問題 #16
Why must a managed ONT or residential gateway be reachable before an Auto Configuration Server can provision it using TR-069?
答案：D
解題說明：
TR-069 enables remote management through communication between customer-premises equipment and an Auto Configuration Server. The device must be powered, operational, and able to establish or participate in a management session before configuration parameters, software information, diagnostics, or status data can be exchanged. An ACS cannot provision a device that is completely offline because no active communication path exists. TR-069 does not configure passive splitters, which contain no management processor or configurable service logic. The managed device can be located at the subscriber premises and does not need to be inside the central office. Communication is carried over the device's network connection rather than exclusively through an OLT serial console. Authentication and protected transport help secure management exchanges between the device and the ACS.
問題 #17
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