4A0-F10 Deutsch & 4A0-F10 Fragen Und Antworten

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Nokia 4A0-F10 Exam Syllabus Topics:

Section	Objectives
Fixed Networks Management	- Corteca home device controller - Altiplano SDAN Controller - NFV and SDN fundamentals - IPFIX telemetry collection - NETCONF and YANG - Nokia SDAN solution
Home Network	- Home network connectivity - Home network devices - Home network device management - Wi-Fi fundamentals
Access Network	- Multicast protocols for video distribution - Quality of Service (QoS) fundamentals - Access network architecture - Optical Line Terminal (OLT) functionality
Broadband Services	- Voice services - Intent mapping to network layers - Value-added and triple-play services - IPTV services - Lightspan service components - Intent-Based Networking (IBN) - High-speed Internet services
Introduction to Fixed Networks	- Broadband network fundamentals - Fixed Wireless Access (FWA) - FTTx concepts and solutions - FTTH concepts and solutions - Broadband access services

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4A0-F10 Fragen Und Antworten & 4A0-F10 Prüfungsunterlagen

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Nokia Fixed Networks Fundamentals 4A0-F10 Prüfungsfragen mit Lösungen (Q13-Q18):

13. Frage
A network controller must modify configuration data stored on a NETCONF-capable access device. Which NETCONF operation is designed for this purpose?

A. <edit-config>
B. <get-config>
C. <kill-session>
D. <close-session>

Antwort: A

Begründung:
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.

14. Frage
Which architectural principle is fundamental to Software-Defined Networking?

A. Requiring every forwarding device to make all policy decisions independently
B. Removing programmability and APIs from network management
C. Separating the control plane from the data-forwarding plane
D. Combining all hardware and software into one fixed proprietary component

Antwort: C

Begründung:
A central principle of Software-Defined Networking is the separation of control logic from packet-forwarding functions. The data plane remains responsible for forwarding traffic, while logically centralized control software determines policies and programs network behavior through defined interfaces. Logically centralized does not necessarily mean that all controller functions run on one physical server; they may be distributed for scalability and resilience while presenting a coordinated control view. SDN emphasizes programmability, automation, abstraction, and the use of APIs. It does not require every forwarding device to independently make all high-level policy decisions. It also avoids tightly coupling every function into one fixed proprietary system. In fixed-access networks, these concepts help operators automate service delivery and manage different access devices through common models and controller applications.

15. Frage
Which Lightspan interface type normally connects an access node directly to subscriber-facing equipment?

A. User Network Interface
B. Network-to-Network Interface
C. Subtending interface
D. Management loopback interface

Antwort: A

Begründung:
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.

16. Frage
Which characteristic distinguishes G.fast from traditional ADSL technologies?

A. G.fast requires a separate copper pair for upstream and downstream traffic.
B. G.fast operates only over passive optical splitters.
C. fast is designed to deliver high broadband rates over relatively short copper loops, frequently using existing building or drop wiring. It uses a much wider and higher-frequency spectrum than traditional ADSL and commonly employs Time Division Duplexing. With TDD, upstream and downstream transmission use the same frequency spectrum during different time intervals. The upstream-to-downstream capacity ratio can therefore be adjusted through the TDD configuration. Higher frequencies can support greater capacity but experience substantial attenuation over distance, which is why G.fast is best suited to short loops. It does not operate through passive optical splitters, although fiber may be deployed close to the subscriber before the final copper segment. G.fast also supports broadband services rather than voice-only delivery.
D. G.fast carries only voice services and does not support broadband data.
E. G.fast commonly uses high frequencies and time-division duplexing over short copper loops.

Antwort: E

17. Frage
What is the primary purpose of vectoring in a DSL access network?

A. To cancel far-end crosstalk among coordinated copper lines
B. To divide optical power among multiple subscribers
C. To combine two or more copper pairs into one logical connection
D. To replace frequency-division duplexing with wavelength-division multiplexing

Antwort: A

Begründung:
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.

18. Frage
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