Nokia Optical Networking Fundamental Practice Exam

Which component characterizes a ROADM block?

• A static filter

• Two static filters and an interleaver

• At least two amplifiers

• A WR tunable circuit pack

Is it possible to modify the FEC (Forward Error Correction) settings during a service creation?

• No, as the transponders configure a FEC type by default. Anyway, it is possible to change the FEC type afterwards

• Yes, but only if coherent transponders are used for the service being created

• Yes, and it can be different for each service

• Yes, but it must be the same for each service flowing into the same line span

Which of the following is true about WDM amplification?

• Only CWDM systems can be amplified

• Only DWDM systems can be amplified, in both C and L bands

• Both CWDM and DWDM systems can be amplified, in all transmission bands

• Only DWDM systems can be amplified, but only in C band

Tags

NGSS.HS-PS4-5

In an optical fiber communication system, what is the DCM?

• A dedicated network used for in-band node management through a Network Management System

• A specific unit used to compensate the cumulative chromatic dispersion

• A customer shelf with several interfaces used to interconnect several local nodes

• A device used to compensate the nonlinear effects originated by long-haul spans

Tags

NGSS.HS-ETS1-2

In an optical system, what is referred to as “3R” function?

• 3R means Reamplification, Reshaping and Retiming

• 3R means Reamplification, Retiming and Reversion

• 3R means Reamplification, Retuning and Recovering

• 3R means Retuning, Recalculating and Recovering

Tags

NGSS.HS-PS4-5

What is the “BoM” report available in EPT?

• A file used as input for NFM-T Commissioning and Power Balance (CPB) application

• A report that contains a list of all the inconsistent cards after a design has been validated

• A file reporting all the errors and warnings discovered by EPT during the validation phase

• A report to provide the information about all the part numbers involved in the validated design

Which of the following statements is correct about an ASON network?

• ASON protection is based on OPS cards

• ASON protection is based on SNCP switches

• ASON protection is based on OPS cards and SNCP switches combined

• ASON protection is based on GMPLS technology

Which of the following is the most important source of optical signal attenuation in WDM systems?

• Fiber length

• Fiber impairments, such as slight variations of the refractive index of core and cladding

• High signal bit rate

• High power used for transmission

What are the two main graphical components constituting the 1830 PSS landing page after logging in?

• “Equipment tree” and “Display panel”

• “Wavelength Tracker” and “Alarm History”

• “Performance Monitoring” and “Test Analysis”

• “Fault Manager” and “Cross Connections”

What is the purpose of the Fault tab in the 1830 node WebUI?

• Generating a controlled network fault for testing purposes

• Retrieving active alarms for a specific, selected item

• Collecting links/interfaces affected by a fault occurred in the network (alarm correlation)

• Retrieving historical alarms for a specific entity (card/interface/shelf)