Dispersion compensation is not required for 40Gbit/s and 100 Gbit/s coherent systems because the dispersion tolerance of coherent boards is large. NG WDM products do not support hybrid transmission of non-coherent and coherent networks.
ATrue
BFalse
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Question 2
MS-OTN Features
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Question 3
WDM Principles
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Question 4
WDM Principles
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Question 5
Transmission Network Products
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Topics covered:
WDM PrinciplesTransmission Network ProductsNG WDM Equipment Networking and ApplicationsOptical- and Electrical-Layer Grooming Solutions of NG WDM EquipmentNG WDM Equipment CommissioningMS-OTN FeaturesOTN ProtocolMS-OTN Protection PrinciplesNG WDM Equipment Routine MaintenanceNG WDM Alarm Signal Flow AnalysisNG WDM System Troubleshooting
Which of the following statements about the modulation technologies of the 40Gbit/s and 100Gbit/s coherent systems are correct?
AThe modulation technology used in a 100G coherent system is ePDM-QPSK.
BThe modulation technology used in a 40G coherent system is ePDM-BPSK.
CThe modulation technology used in a 40G coherent system is ePDM-QPSK.
DThe modulation technology used in a 100G coherent system is ePDM-BPSK.
In a WDM system, after a distance of transmission, the OSNR of the signals at the receive end decreases to a certain extend. Which of the following is the main cause?
AUse of EDFA
BThe fiber attenuation is too large.
CNew optical fiber is not used.
DUse of Demultiplexer Multiplexer
Which of the following ROADM boards have WSS optical modules? (Choose two.)
ARDU9
BWSM9
CWSMD9
DWSD9
Question 6
MS-OTN Features
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Question 7
Transmission Network Products
Question 8
WDM Principles
Question 9
NG WDM Equipment Commissioning
Question 10
NG WDM Equipment Commissioning
Question 11
NG WDM System Troubleshooting
Question 12
NG WDM Equipment Networking and Applications
Question 13
Optical- and Electrical-Layer Grooming Solutions of NG WDM Equipment
Question 14
OTN Protocol
Question 15
WDM Principles
Question 16
NG WDM Equipment Commissioning
Question 17
Transmission Network Products
Question 18
WDM Principles
Question 19
NG WDM Equipment Commissioning
Question 20
NG WDM Equipment Commissioning
Question 21
MS-OTN Protection Principles
Question 22
MS-OTN Protection Principles
Question 23
MS-OTN Protection Principles
Question 24
MS-OTN Protection Principles
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Which of the following is the client-side logical port of a board in standard mode?
AODUkLP-n
BRX/TX-n
CClientLP-n
Dn(Nn/OUTn)-OCH:1-ODUk:m-ODUp:q
Which of the following statements about Flexible ROADM is incorrect?
AImproves spectrum utilization and meets the requirements for flexible scheduling in the 100Gbit/s era.
BFlexible ROADM is compatible with existing networks.
CThe WSMD2 board supports the Flexible ROADM configuration.
DThe Flexible grid technology can flexibly set bandwidth and support flexible bandwidth allocation and scheduling.
Which of the following statements about ROADM is correct?
AROADM technology uses the NMS software to deliver configurations to implement the wavelength adding/dropping and pass-through status.
BNG WDM equipment supports ROADM with fixed spectrum and Flexible ROADM with flexible spectrum.
CROADM can adjust the optical power of the pass-through wavelength and the added wavelength.
DQ&M personnel need to provide onsite support for wavelength adjustment at ROADM sites.
Which of the following Optical NE types are defined in U2000?
AWDM_OEQ
BWDM_OTM
CWDM_OLA
DWDM_OADM
When creating new NE, which of the following Configuration Mode can be selected?
AInitialize and Manually Configure NE Data
BDownload
CUpload
DCopy NE Data
If OCh trails fail to be created by trail, which are possible causes?
AThere are still alarms that are not cleared on the boards involved in the OCh.
BThe wavelength settings at the source and sink ends are inconsistent.
CSome fibers are not connected.
DThere is no server trail.
Which of the following trails can be configured on the NMS?
AOTS
BODUk
Cclient
DOCh
The LOA board can implement the L2 scheduling function of the Ethernet in OSN 1800.
ATrue
BFalse
Which of the following statements about the Service Package is incorrect?
AYou can configure service package in two modes. One is to configure boards in batches, and the other is to configure each board.
BService package enables one-click configuration of typical services by issuing multiple configuration commands in batches, facilitating product deployment commissioning and reducing maintenance costs.
CThe Service Package can configure the working mode, service type, cross-connection, and port type in batches.
DCurrently, Service Package is available to the TOA, TOX and TSC boards.
The maximum output optical power of an OBU board is 20 dBm, when it is used in a C-band 80-channel system, what is the standard per-channel output optical power?
A+1dBm
B-2dBm
C+7dbm
D+4dBm
Before the optical power commissioning of an ROADM board, you need to configure virtual optical-layer services. Otherwise, the ROADM board blocks all wavelengths by default.
ATrue
BFalse
Which of the following residual dispersion values are within the dispersion tolerance of the TN52ND2 board?
A900ps/nm
B500ps/nm
C700ps/nm
D600ps/nm
Which of the following is approximately equal to 100mw?
A13dBm
B20dBm
C15dBm
D10dBm
Which of the following standards must be met for the isolation test in the feature test of the multiplexer/demultiplexer?
A<20dB
B
25dB
C
20dB
D<25dB
If no bit error test is performed on an optical channel for 10 minutes, the local end uses the SDH analyzer to connect to the client-side port on the OTU board, the client-side port on the opposite OTU board need to be self-looped by a fiber. In the case of self-loop, a fixed attenuator must be added.
ATrue
BFalse
When the grooming service level of the line board is ODUflex, which of the following protection schemes can be supported?
AODUk SPRing protection
BTributary SNCP
CSW SNCP
DODUk SNCP
When different routes are used for client-side 1+1 protection, the working wavelength and protection wavelength cannot use the same wavelength.
ATrue
BFalse
Which of the following alarms trigger optical line protection switching?
APOWER_DIFF_OVER
BR_LOF
CMUT_LOS
DR_LOS
Which of the following protection schemes require the APS protocol?
