nokia 4A0-205 Exam Questions
Questions for the 4A0-205 were updated on : Nov 21 ,2025
Page 1 out of 3. Viewing questions 1-15 out of 40
Question 1
How are the EPT systems related to NFM-T when CPB is performed?
- A. The systems are not reported on CPB, as this Is transparent to the user and the whole network is validated and provisioned in one step
- B. The systems are displayed on the CPB panel, however they cannot be individually selected as they need to run all together
- C. The systems are displayed on the CPB panel and they can be individually selected
- D. The systems are not reported on CPB, but only through the Equipment Manager
Answer:
C
Explanation:
The EPT systems are displayed on the CPB (Commissioning Parameter Builder) panel and they can be
individually selected. This allows the user to configure the network elements in the network and
provision them according to their specific requirements. The systems are not reported on CPB, but
through the Equipment Manager. The Equipment Manager is the interface used to configure the
network elements and the EPT systems. The NFM-T is not related to the CPB and does not affect the
CPB process.
Question 2
Which macro steps can be executed via CPB?
- A. Node creation, systems validation and system provisioning
- B. Power adjustment and generation of the system loss report
- C. Systems validation, system provisioning, power adjustment
- D. Node supervision, system validation and system provision
Answer:
A
Explanation:
Node creation, systems validation and system provisioning. The CPB (Commissioning Parameter
Builder) application is used to generate commissioning files for a Nokia 1830 Photonic Service Switch
(PSS-1) and can be used to create new nodes, validate the system configuration, and provision the
system with the appropriate settings and parameters. Power adjustment and generation of system
loss report are not related to CPB.
Question 3
Which application generates the commissioning file(s)?
- A. NFM-T
- B. NSP
- C. CPB
- D. EPT
Answer:
C
Explanation:
The CPB (Commissioning Parameter Builder) application is used to generate the commissioning files
for a Nokia 1830 Photonic Service Switch (PSS-1). The CPB application allows the user to create
multiple commissioning files
[1][2]
, which can be used to configure a variety of different features on
the device. The CPB also allows users to view, edit and modify the commissioning files before they
are uploaded to the device. The NSP (Network Service Platform) and EPT (Element Provisioning Tool)
are used to manage the devices and network elements within the network, but do not generate
commissioning files.
Question 4
How is it possible to check the activation status of GMRE on a node?
- A. The GMRE reachability can be tested via ping request from NFM-T
- B. The ControlPlane status column on the node list displays the GMRE status for the selected node
- C. The GMRE activation status is reported in the supervision state column on the node list
- D. The GMRE activation status is reflected on the color of the icon representing the node
Answer:
C
Explanation:
The GMRE activation status is reported in the supervision state column on the node list. The
supervision state column displays the GMRE status of the node, which is either "Activated" or "Not
Activated". This allows the user to quickly check the GMRE activation status of a node without having
to ping the node from the NFM-T platform.
Question 5
Which statement is correct about node synchronization?
- A. Full synchronization retrieves the correlated alarms from the node
- B. Node synchronization is executed to test the reachability of a node
- C. Node synchronization is executed to align the time of the node to the time of the NFM-T platform
- D. Full synchronization retrieves all items from the node (NE parameters. Ports, Alarms, Internal Links, etc)
Answer:
D
Explanation:
Node synchronization is a process of keeping the NFM-T database in sync with the nodes in the
network. The synchronization process will download all the items from the node, including NE
parameters, ports, alarms, internal links, etc., to the NFM-T database. This ensures that the NFM-T
database is up to date and the network is running efficiently.
Question 6
What is the purpose of the NFM-T node synchronization?
- A. The partial or full node synchronization allows several entities/items defined at node level to be retrieved into the NFM-T database (upload).
- B. The partial or full node synchronization allows several entities/items defined at NFM-T level to be written into the node database (download).
- C. 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).
- D. 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).
Answer:
B
Explanation:
This is done in order to keep the NFM-T database in sync with the nodes in the network. The
synchronization process allows the NFM-T to keep track of any changes that are made to the nodes,
such as new nodes added, nodes removed, and so on. By synchronizing the node database with the
NFM-T, network administrators can ensure that their network is up to date and running efficiently.
Question 7
Is it possible to mix PSS-24x and PSS-8x shelves In an SWDM configuration?
- A. Yes, as both can be equipped within the same node
- B. No, as they are not compatible and cannot be used within the same node
- C. Yes, but the PSS-24X shelf must be configured as a master
- D. Yes, but the PSS-8X shelf must be configured as a master
Answer:
B
Explanation:
No, it is not possible to mix PSS-24x and PSS-8x shelves in an SWDM (Short Wavelength Division
Multiplexing) configuration. The two shelves are not compatible, and cannot be used within the
same node.
Question 8
With reference to the image, where is the OPS card placed to provide the OMSP protection?
- A. After the amplifiers
- B. Between the mux/demux and the amplifier
- C. Between the transponders and the mux/demux
- D. Before the transponder, on the client side, towards the external device
Answer:
D
Question 9
Where is the OPS card equipped to provide the optical channel protection?
- A. Between the transponder and the amplifiers
- B. Between the filters and the amplifiers
- C. Before the transponder, on the client side, towards the external device
- D. Between the transponder and the filter
Answer:
A
Explanation:
According to the Nokia's 1830 Photonic Service Switch (PSS) product documentation, the Optical
Protection Switching (OPS) card is equipped in the transponder and is responsible for providing
optical channel protection between the transponder and the amplifiers. The OPS card monitors the
optical signal and switches to a pre-configured protection path in case of signal degradation or loss.
Question 10
Which of the following is an example of optical protection mechanism?
- A. Optical regeneration (e.g., back-to-back regeneration)
- B. OSNCP (e.g., via Y-cable or OPS card)
- C. GMPLS-enabled SBR
- D. GR and SBR combined
Answer:
B
Explanation:
It can be implemented through the use of a Y-cable or an optical protection switch (OPS) card, which
allows for the switching of traffic to a secondary path in the event of a failure on the primary path.
This type of protection is commonly used to protect against fiber cuts and other types of physical
layer failures in the optical transport network.
Question 11
What is a Shared Risk Group (SRG)?
- A. A set of fibers that share the same latency risk
- B. A set of boards that share the same failure risk
- C. A set of nodes that share a common risk of hardware failure
- D. A set of network resources that share a common failure risk
Answer:
D
Explanation:
According to the Nokia Optical Networking documentation, a Shared Risk Group (SRG) is defined as
"a set of network resources that share a common failure risk. When a resource in an SRG fails, the
other resources in the group are also affected." This can include fibers, boards, nodes, and other
network resources. The SRG concept is used in network design and protection mechanisms to ensure
survivability and minimal impact on service in case of a failure.
Question 12
Which mechanisms can be put in place to increase network survivability?
- A. Protection, where backup resources are pre-allocated and reserved; or restoration, where each trail can be recovered thanks to a 1+1 protection mechanism
- B. Protection, where backup resources are allocated upon failure; or restoration, where each trail can be recovered thanks to a 1+1 protection mechanism
- C. Protection, where backup resources are allocated upon failure; or restoration, where backup resources are pre-allocated and reserved
- D. Protection, where backup resources are pre-allocated and reserved; or restoration, where backup resources are allocated upon failure.
Answer:
D
Explanation:
There are two main mechanisms that can be put in place to increase network survivability:
protection and restoration. Protection involves pre-allocating and reserving backup resources so that
they are ready in case of a failure. Restoration involves allocating backup resources upon failure and
using a 1+1 protection mechanism to recover each trail. This ensures that the network is able to re-
route traffic in the event of a failure, increasing the overall survivability of the network.
Question 13
What does it take to get connected to the NSP platform?
- A. A browser and the NSP IP address; and from the landing page, the NSP application should be downloaded and launched.
- B. A browser and the NSP IP address. Then, a browser plugin needs to be installed and the laptop rebooted before the NSP can be correctly reached.
- C. A browser, the NSP IP address, and the credentials to access the web-based interface (WebUI).
- D. The NSP package should be downloaded from the Nokia website and properly licensed for the specific workstation to be used.
Answer:
C
Explanation:
To get connected to the Nokia Service Platform (NSP) platform, you need a browser and the NSP IP
address. Then, you need the credentials to access the web-based interface (WebUI) for the NSP
platform. Once you have these, you can access the NSP platform from a web browser.
Question 14
Which sentence about NFM-T is correct?
- A. NFM-T fully supports LO, LI, L2 and GMPLS applications and it is mainly focused on 1830 PSS, as well as other older product families
- B. NFM-T fully supports optical and IP nodes
- C. NFM-T is used to design and manage optical network
- D. NFM-T is used to provision optical services having IP nodes as extremities
Answer:
D
Explanation:
NFM-T is a network management system designed to manage optical networks in a unified manner.
It is used to design, manage, and provision optical services having IP nodes as extremities. It
supports a variety of technologies, including optical and IP, and fully supports LO, LI, L2, and GMPLS
applications. It is mainly focused on the Nokia 1830 PSS product family, as well as other older
product families.
Question 15
Which statement is correct about the NFM-T network map?
- A. It automatically represents all nodes grouped by the location string assigned during the NE creation.
- B. It represents all supervised nodes grouped by alarm status (with a different color).
- C. It allows context sensitive navigation and represents nodes and related physical connections with different colors. depending on the active alarms.
- D. It allows the graphical visualization of the services deployed in the network with the details of the boards involved in the service.
Answer:
C
Explanation:
The NFM-T network map provides a graphical view of the network with different colors used to
represent each node, physical connection, and active alarm. It allows the user to quickly identify any
issues in the network and provides context sensitive navigation.