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| Section | Objectives |
|---|---|
| Topic 1: Fixed Networks Management | - Nokia SDAN solution - NFV and SDN fundamentals - Corteca home device controller - IPFIX telemetry collection - NETCONF and YANG - Altiplano SDAN Controller |
| Topic 2: Introduction to Fixed Networks | - Fixed Wireless Access (FWA) - FTTH concepts and solutions - FTTx concepts and solutions - Broadband network fundamentals - Broadband access services |
| Topic 3: Home Network | - Home network connectivity - Home network devices - Home network device management - Wi-Fi fundamentals |
| Topic 4: Access Network | - Optical Line Terminal (OLT) functionality - Quality of Service (QoS) fundamentals - Access network architecture - Multicast protocols for video distribution |
| Topic 5: Broadband Services | - Lightspan service components - Value-added and triple-play services - High-speed Internet services - Intent-Based Networking (IBN) - Intent mapping to network layers - Voice services - IPTV services |
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NEW QUESTION # 39
In an IPFIX deployment, which component observes traffic and sends flow records to a receiving system?
Answer: D
Explanation:
An IPFIX exporting process observes traffic at an observation point, creates flow records, and sends those records to an IPFIX collecting process. Templates describe the fields contained in the exported records, allowing the collector to interpret information such as source and destination addresses, transport ports, protocol identifiers, counters, and timestamps. The collector can store and analyze these records for traffic visibility, capacity planning, troubleshooting, accounting, or security analysis. IPFIX does not permanently store all collected information on the exporting network device. A passive optical splitter cannot inspect or export traffic because it has no active processing functions. An 802.1X supplicant participates in access authentication, while a SIP registrar maintains information used to locate SIP users or endpoints.
NEW QUESTION # 40
An optical link experiences unexpectedly high signal loss immediately after a fiber cable is routed around a very tight corner. What is the most likely cause?
Answer: C
Explanation:
Macrobending occurs when an optical fiber is bent with a radius smaller than its supported minimum bend radius. The excessive bend can cause part of the optical signal to escape from the core, increasing attenuation and reducing the received optical power. This problem can appear after poor cable installation, improper storage, or routing the cable sharply around structural objects. Chromatic dispersion causes different wavelengths or spectral components of an optical pulse to travel at slightly different speeds, but it is not normally triggered by one tight physical corner. DSL crosstalk applies to copper pairs, while Dynamic Bandwidth Allocation controls upstream transmission opportunities in a PON. Correcting the cable routing and respecting the specified bend radius can remove or reduce the loss.
NEW QUESTION # 41
Why does an access automation platform store operational state, logs, and telemetry in a common data lake?
Answer: D
Explanation:
A common data lake provides a centralized location for operational state, telemetry, logs, alarms, and other information collected from access-network devices and applications. Centralized data enables monitoring tools to correlate information across multiple nodes, evaluate network health, identify trends, and support analytics-driven automation. Historical data can also assist with troubleshooting, performance baselining, capacity planning, and detection of abnormal behavior. The data lake does not replace physical access devices; it stores information describing their operation. It is intended to make relevant information available to authorized applications rather than prevent historical access. It also does not automatically transform subscriber unicast traffic into multicast. Forwarding behavior is controlled through service and network configuration, whereas the data lake supports visibility, analysis, and operational decision-making.
NEW QUESTION # 42
Why must a managed ONT or residential gateway be reachable before an Auto Configuration Server can provision it using TR-069?
Answer: B
Explanation:
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.
NEW QUESTION # 43
How does an ADSL connection support simultaneous traditional voice and broadband data over the same copper pair?
Answer: D
Explanation:
ADSL uses frequency-division techniques to place traditional analog voice and broadband data in different portions of the available copper-pair spectrum. The lower-frequency range is reserved for voice, while higher-frequency ranges carry upstream and downstream DSL data. Filters or splitters separate these frequency ranges at the subscriber and network sides, allowing a telephone call and an Internet session to operate simultaneously. The services are not required to alternate in time, and an optical wavelength is not involved because ADSL operates over copper. GPON time-slot scheduling applies to upstream transmissions from ONTs on a passive optical network, not to ADSL voice separation. Line quality, loop length, attenuation, and interference affect the data rate that ADSL can achieve.
NEW QUESTION # 44
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