Nokia 4A0-205 Exam Practice Test Instant Access

Question 1

What is the definition of OSNR?

AThe OSNR is defined as the ratio between the transmitted optical power and the received optical power over 1 km of fiber including both signal and optical noise.

BThe OSNR is the ratio between the optical output signal power and the optical input signal power of the device being analyzed.

CThe OSNR is defined as the ratio between the average optical signal power and the average optical noise power over a specific spectral bandwidth.

DThe OSNR is defined as the ratio between the optical signal power (including noise) and the optical noise power over a specific spectral bandwidth.

Answer : C

The OSNR is defined as the ratio between the average optical signal power and the average optical noise power over a specific spectral bandwidth. This is also known as the signal-to-noise ratio (SNR), and it is a measure of how much signal is present in the optical signal compared to the noise, usually expressed in decibels (dB).

Question 2

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

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

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

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

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

Answer : C

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 3

Which application generates the commissioning file(s)?

ANFM-T

BNSP

CCPB

DEPT

Answer : C

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

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

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

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

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

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

Answer : D

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 5

Where can the user set the long-haul WT decoder parameter, when designing a network with EPT?

AIn the network parameters

BIn the optimization parameters

CIn the NE parameters

DIn the audit menu

Answer : C

The long-haul WT decoder parameter can be set in the NE parameters when designing a network with EPT. This parameter is used to adjust the sensitivity of the decoder and can help to improve the accuracy of the measurements for long-haul WTs.

The Network Element (NE) parameters in EPT (Element Planning Tool) are used to configure various settings and options for the network elements in the network. The long-haul WT decoder parameter is one such setting that can be configured in the NE parameters section. The user can access the NE parameters by navigating to the NE Parameters menu within the EPT interface. The user can then select the appropriate network element and modify the settings as needed. This information can be found in the Nokia guide for EPT.

Question 6

By using the EPT run design command, are the previously designed elements removed?

AYes, they are but only the first time the command is launched as - for future design phases - the existing packs need to keep the same slotting.

BIt depends, the user is prompted to choose whether to delete or leave the previously designed elements.

CNot the design is always progressive, on top of the previous design.

DYes, although this is not happening in case of GMPLS-enabled nodes because existing slots cannot change as they are controlled by another manager (GMRE).

Answer : B

The EPT run design command can remove previously designed elements, but the user is prompted to choose whether to delete them or leave them intact. This allows the user to progress their design while still keeping the existing elements in place. If the user selects to leave the existing elements, then they will remain in the same slots. If GMPLS nodes are used, the existing slots cannot change as they are controlled by another manager (GMRE).

Question 7

With reference to trails and services, which of the following sentences is correct?

ATrails are transported over services; that is, trails are clients with respect to services.

BA trail can interconnect three ports, while a service always two.

CServices are transported over trails; that is, services are clients with respect to trails.

DA service is always associated to a single wavelength, while a trail can involve multiple wavelengths.

Answer : C

Services are transported over trails; that is, services are clients with respect to trails. A service is a logical connection that is used to transport data from one point to another. It is created over a trail, which is a physical connection that is established by using multiple wavelengths. As such, services are clients with respect to trails, as they are transported over them.

Nokia 4A0-205 Nokia Optical Networking Fundamentals Exam Practice Test