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| Section | Objectives |
|---|---|
| Topic 1: Fixed Networks Management | - Altiplano Software-Defined Access Network (SDAN) - Netconf/YANG and telemetry - NFV and SDN concepts |
| Topic 2: Introduction to Fixed Networks | - Broadband access fundamentals - FTTH, FTTx and FWA solutions |
| Topic 3: Broadband Services | - Internet, IPTV and voice services - Lightspan service components |
| Topic 4: Home Network | - Home devices and connectivity - Wi-Fi fundamentals |
| Topic 5: Access Network | - Access network architecture - OLT functions - Multicast and QoS principles |
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NEW QUESTION # 25
Which Wi-Fi 7 capability allows a compatible device to use more than one frequency-band link as part of the same connection?
Answer: B
Explanation:
Multi-Link Operation is a major Wi-Fi 7 capability that enables compatible devices to establish and coordinate multiple radio links, potentially across frequency bands such as 5 GHz and 6 GHz. Depending on the implementation, traffic can be distributed across links to increase throughput or moved between links to reduce latency and avoid interference. Earlier Wi-Fi generations generally treated a client's band connection more independently. Dynamic Bandwidth Allocation schedules upstream PON capacity, DSL vectoring mitigates copper-pair crosstalk, and VLAN stacking carries multiple VLAN identifiers in Ethernet frames. Multi-Link Operation requires support from both the access point and client. Actual performance also depends on spectrum availability, channel conditions, device capabilities, regulatory constraints, and the capacity of the access point's wired or wireless backhaul.
NEW QUESTION # 26
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 # 27
Which component of a typical Optical Distribution Network requires no electrical power to perform its primary function?
Answer: C
Explanation:
A passive optical splitter divides an incoming optical signal into multiple output paths without requiring electrical power. It is a fundamental component of the Optical Distribution Network connecting an OLT to multiple ONTs or ONUs. The splitter does not regenerate, amplify, or actively switch the optical signal. Consequently, splitting introduces optical loss that must be considered when calculating the PON power budget. The OLT and ONT are active devices because they require power to transmit, receive, process, and convert signals. A residential gateway also requires power to provide functions such as routing, firewall enforcement, DHCP, Ethernet switching, and Wi-Fi connectivity. The use of passive splitters reduces the need for powered equipment in the outside plant, which can simplify field maintenance and lower operational costs.
NEW QUESTION # 28
Which of the following statements correctly describes downstream and upstream transmission in a GPON network?
Answer: D
Explanation:
GPON uses different transmission methods in the downstream and upstream directions. In the downstream direction, the OLT sends a continuous stream through the passive optical splitter. This stream reaches every connected ONT, but each ONT processes only the frames intended for it. Encryption can protect subscriber traffic from other ONTs on the same PON. In the upstream direction, several ONTs share the same optical fiber and cannot transmit simultaneously without coordination. The OLT therefore assigns transmission opportunities using Time Division Multiple Access. Dynamic Bandwidth Allocation can adjust these upstream grants according to traffic demand and service requirements. Separate fibers are not required for each subscriber because GPON commonly uses wavelength separation to carry downstream and upstream traffic over the same fiber infrastructure.
NEW QUESTION # 29
What is the primary purpose of Zero-Touch Provisioning for a newly installed residential Wi-Fi gateway?
Answer: B
Explanation:
Zero-Touch Provisioning allows a newly connected gateway or Wi-Fi device to discover the appropriate management environment and obtain its required configuration with minimal manual intervention. This reduces installation time, lowers the chance of configuration errors, and makes subscriber self-installation more practical. In a managed home-network solution, the device can be associated with the subscriber, receive service parameters, and become visible to the provider's management platform. Zero-Touch Provisioning does not mean that no configuration exists; it means the configuration is delivered automatically instead of being entered locally by a technician. It also does not prevent management communication or turn an active gateway into a passive device. Successful provisioning still depends on network connectivity, device identity, authorization, and compatible management procedures.
NEW QUESTION # 30
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