Nokia Optical Networking Fundamentals v1.0
Question 1
Which of the following is an example of optical protection mechanism?
- A. Optical regeneration (e.g., back-to-back regeneration)
- B. O-SNCP (e.g., via Y-cable or OPS card)
- C. GMPLS-enabled SBR
- D. GR and SBR combined
Answer : B
Question 2
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 : C
Question 3
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 amplifiers
- C. Between the transponders and the mux/demux
- D. Before the transponder, on the client side, towards the external device
Answer : C
Question 4
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 : A
Question 5
What is the purpose of the NFM-T node synchronization?
- A. The partial or full node synchronization allows several entitles/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 : D
Question 6
Which statement is correct about node synchronization?
- A. Full synchronization retrieves the correlated alarms from me 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 : C
Question 7
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 : D
Question 8
Which application generates the commissioning file(s)?
- A. NFM-T
- B. NSP
- C. CPB
- D. EPT
Answer : B
Question 9
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 and generation of the system loss report
- D. Node supervision, system validation and system provisioning
Answer : C
Question 10
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
Question 11
With reference to the power budget, what is the meaning of receiver dynamic range?
- A. It is the minimum power to be received for a given BER.
- B. It is the range between the receiver overload power and its sensitivity.
- C. It is the range between the maximum transmit power and the minimum transmit power.
- D. It is the maximum receiver power to prevent an overload.
Answer : B
Question 12
What is the main function of an optical amplifier?
- A. Demodulating the incoming signal
- B. Compensating for optical power attenuation
- C. Compensating for chromatic dispersion
- D. Compensating for attenuation through an optical-electrical-optical amplification
Answer : B
Question 13
Which of the following statements about coherent transmission in WDM technology is TRUE?
- A. Coherent systems need carrier phase information at the receiver.
- B. Only multi-mode fibers can be used with coherent transmissions.
- C. The channel allocation is flexible, according to the channel size of the signals.
- D. At each receiver, a dispersion compensation unit is often necessary, depending on the fiber length.
Answer : A
Question 14
Which of the following statements about Optical Add/Drop Multiplexers (OADMs) is FALSE?
- A. OADMs allow the user to terminate specific services through transponders.
- B. OADMs allow the user to pass-through specific services at the wavelength optical level (express channels).
- C. OADMs always require O-E-O conversion when passing-through optical channels.
- D. There are two main general classes of OADMs: FOADMs and ROADMs.
Answer : C
Question 15
What is the block that converts the colorless (or black and white) client signal to a specific optical channel in a WDM system?
- A. Wavelength router (WR)
- B. Optical transponder (OT)
- C. Static filter device (SFD)
- D. Dispersion compensation module (DCM)
Answer : B