The following description of the use of synchronous methods to create fiber optics, which is wrong?

• A.If there is a fiber that is not created on the U2000 or a fiber that is not created on the network element, you need to synchronize or create it.
• B.The existence of a conflicting fiber does not affect the configuration of the path, so it can be ignored.
• C.Collision fiber refers to the fiber that is configured on the network element side and is inconsistent with the configuration on the network management side.
• D.The fiber exists on the network management side and the network element side, and the fiber with the same information is not required to be created.

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The shortcomings of traditional OTDR meters in measuring optical fibers are: (Multiple choice)

• A.Cannot be used for routine maintenance testing
• B.Business will be interrupted during measurement
• C.Need inbound measurement
• D.Manual interpretation is required, which requires high operator requirements

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When you delete a discrete service, you can first activate it. At this time, you can view the alarm. If there is no alarm such as PS or TU-AIS, it is a garbage service. If there is an alarm, the analysis is incorrect. You need to activate it immediately.

• A.TRUE
• B.FALSE

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Which of the following technologies is the main difference between an open DWDM system and an integrated DWDM system?

• A.Optical supervision technology
• B.Multiplexing / demultiplexing technology
• C.Wavelength conversion technology
• D.Optical amplification technology

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MG-SDH digital single core can be expanded by software upgrade.

• A.False
• B.True

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