Free 2026 4A0-205 Dumps 100 Pass Guarantee With Latest Demo [Q32-Q51]

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Free 2026 4A0-205 Dumps 100 Pass Guarantee With Latest Demo

Prepare 4A0-205 Question Answers Free Update With 100% Exam Passing Guarantee [2026]

Nokia 4A0-205 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Network Management and Operations	20%	– Performance monitoring, alarms and troubleshooting – NFM-T / WS-NOC management system overview – Network commissioning and monitoring – Network design with 1830 EPT / WaveSuite Planner
Topic 2: Optical Networking Basics	20%	– Optical components and functions – Optical signal propagation and characteristics – Fiber types, properties and transmission principles
Topic 3: Optical Network Architecture and Nodes	20%	– WDM node types and functionalities – Switched WDM (SWDM) principles – Network topologies and transport architectures
Topic 4: WDM Technology and Systems	25%	– Optical amplifiers and transmission engineering – Wavelength Division Multiplexing concepts – DWDM system architecture and building blocks
Topic 5: Network Survivability and Protection	15%	– Availability and survivability concepts – Path and line protection schemes – Protection and restoration mechanisms

QUESTION 32
Which of the following statements about the contentionless feature on a CDC-F node is TRUE?

It represents the ability to support the Fixed Grid standard.

It represents the ability to drop any lambda from any Add/Drop block port.

It represents the ability to reroute lambdas to any direction.

It represents the ability to drop the same wavelength from different degrees.

QUESTION 33
Which application generates the commissioning file(s)?

NFM-T

NSP

CPB

EPT

QUESTION 34
Is it possible to open and manage EPT designs that are created with different releases than the release installed on the local workstation?

Only designs created with the current release can be opened and edited.

Only designs created with current and older releases can be opened and edited.

Designs created with an older release can be opened by a current release but cannot make changes.

No restrictions are imposed on the software release.

QUESTION 35
What is the main function of an optical amplifier?

Demodulating the incoming signal

Compensating for optical power attenuation

Compensating for chromatic dispersion

Compensating for attenuation through an optical-electrical-optical amplification

QUESTION 36
Which of the following statements is true?

Logs report both active and historical events.

Alarms and conditions report a real time status of the node.

Alarms and conditions report only historical status of the node.

Logs report a real time status of the node.

QUESTION 37
What is the OAMP LAN interface?

It is an RJ-45 interface (a common Ethernet port) used for cascading 1830 PSS nodes (e.g., external shelves)

It is an RJ-45 interface (a common Ethernet port) that has to be configured with an IP address for node reachability and management

It is an RJ-45 interface (common Ethernet port) used to connect one or more client ports (e.g., 1Gb/s or legacy 100Mbit/s client flows)

It is an RJ-45 interface (a common Ethernet port) used to export active alarms to an external device, typically equipped with several LEDs

QUESTION 38
Which mechanisms can be put in place to increase network survivability?

Protection, where backup resources are pre-allocated and reserved; or restoration, where each trail can be recovered thanks to a 1+1 protection mechanism

Protection, where backup resources are allocated upon failure; or restoration, where each trail can be recovered thanks to a 1+1 protection mechanism

Protection, where backup resources are allocated upon failure; or restoration, where backup resources are pre-allocated and reserved

Protection, where backup resources are pre-allocated and reserved; or restoration, where backup resources are allocated upon failure.

QUESTION 39
WDM allows transmission systems to:

Share a single signal among multiple fibers doing load balancing, and thus increasing the reliability of the optical transmission

Allocate different signals to different time slots

Transport multiple signals transparently, onto several wavelengths, all together over one single fiber

Increase the bit rate of each client signal by spreading it over multiple wavelengths

QUESTION 40
What is the purpose of the validate step in the EPT design process?

During this step, the configuration available on the involved network elements is compared with the design provided by EPT.

This step is used to measure optical power performances over an existing network before making changes.

This step is optional and is useful to verify the network element layout before going through the commission step.

During this step, the run design action is triggered for network design consistency check and errors fixing.

QUESTION 41
Which of the following sentences about FlexGrid is false?

FlexGrid allows a more efficient channel spacing.

Channels in FlexGrid systems are allocated with a granularity of 27.5GHz.

FlexGrid systems use specific sets of boards. Old generation WDM systems need to be upgraded to support FlexGrid.

The FlexGrid is currently standardized by ITU-T.

QUESTION 42
What is the purpose of the NFM-T deploy menu?

It is used to deploy additional shelves to existing SWDM nodes.

It is used to import EPT files to deploy the network based on the EPT design.

It is used to deploy new operators (administrator, observers, and so on) to access the platform.

It is used to create new network instances, such as physical connections, infrastructures and services.

QUESTION 43
What is the function of a pre-amplifier in an optical network?

Through the pre-amplifier, the optical signal is amplified at the receiver side after it travels along the fiber from another node.

Through the pre-amplifier, the optical signal is amplified at the transmitter side before it is sent to the line span.

Through the pre-amplifier, the optical signal is amplified both the receiver side and at the transmitter side.

Through the pre-amplifier, the optical signal is amplified within the node internally to recover internal losses due, for instance, to cascaded filters.

QUESTION 44
How can a mesh network be upgraded so that more services can be transported?

Configuring new WSS cards is the most effective way to give flexibility and network bandwidth to an existing mesh network.

The Protection and Restoration Combined (PRC) mechanism can enable more bandwidth but only for the protected services.

Upgrading the network to coherent transmission is the only effective way to enable more bandwidth to the existing mesh network.

Upgrading link capacity and/or installing new links provides more bandwidth to the existing mesh network.

QUESTION 45
Which type of ports are present in the Colorless Wavelength Router (CWR)?

Colorless uni-directional ports only

Black and white ports

Colorless bi-directional ports

DeMux ports

QUESTION 46
What is the purpose of the NFM-T node synchronization?

The partial or full node synchronization allows several entities/items defined at node level to be retrieved into the NFM-T database (upload).

The partial or full node synchronization allows several entities/items defined at NFM-T level to be written into the node database (download).

The partial or full node synchronization allows several entities/items defined at EPT level to be retrieved into the NFM-T database (upload from design).

The partial or full node synchronization allows several entities/items defined at NFM-T level to be exported into an XML file, to be used as input for EPT (download to design).

QUESTION 47
Which of the following statements about coherent transmission in WDM technology is TRUE?

Coherent systems need carrier phase information at the receiver.

Only multi-mode fibers can be used with coherent transmissions.

The channel allocation is flexible, according to the channel size of the signals.

At each receiver, a dispersion compensation unit is often necessary, depending on the fiber length.

QUESTION 48
How many PM bins can be stored, for each data collection point, on PSS systems?

120 x 15-min bins, 60 x 1-day bins and 1 raw bin.

200 x 15-min bins, 90 x 1-day bins and 1 raw bin.

4 x 15-min bins and 1 x 1-day bin.

33 x 15-min bins, 8 x 1-day bins and 1 raw bin.

QUESTION 49
A user needs to check for interface details against the commands is the correct one?

show interface 11starla 1/17/L1 detail

config card 11star1a interface 1/17 detail

11starla 1/17 port-detail

config interface detail 1/17/L1

QUESTION 50
How is it possible to check the activation status of GMRE on a node?

The GMRE reachability can be tested via ping request from NFM-T

The ControlPlane status column on the node list displays the GMRE status for the selected node

The GMRE activation status is reported in the supervision state column on the node list

The GMRE activation status is reflected on the color of the icon representing the node

QUESTION 51
Which of the following statements about Optical Add/Drop Multiplexers (OADMs) is FALSE?

OADMs allow the user to terminate specific services through transponders.

OADMs allow the user to pass-through specific services at the wavelength optical level (express channels).

OADMs always require O-E-O conversion when passing-through optical channels.

There are two main general classes of OADMs: FOADMs and ROADMs.

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Nokia 4A0-205 Exam Syllabus Topics:

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