In WDM systems, when using less than () wavelength, it is ideal to use dielectric thin film filter (TFF).

• A.4
• B.20
• C.16
• D.8

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When configuring the Ethernet Layer 2 attribute, set the Default VLAN ID and VLAN Priority of the untagged frame when the TAG ID is set to Accese or Hybrid. The "VLAN priority" is set according to the QoS of the unified plan.

• A.FALSE
• B.TRUE

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Which of the following service layer paths is required when creating OCh using the path method?

• A.Client
• B.ODUk
• C.OMS
• D.OTS

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Which of the following ROADN nodes are configured correct? (Multiple choice)

• A.WSD9+RMU9
• B.WSIM9+WSD9
• C.WSMD9
• D.WSM9+RDU9

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Which of the following description of the Optix OSN 9800 sub-rack is correct? (Multiple choice)

• A.In the OSN 980 0U32 sub-rack, IU70 is the primary CTU and IU78 is the standby CTU.
• B.The service board can be inserted into the IU18 slot only when the OSN 9800 P18 is used as the slave sub-rack.
• C.When the OSN 9800 Universal Platform Sub-rack is used as a slave sub-rack, the main control board must be placed.
• D.The OSN 9800 U16 sub-rack has a total of 16 service slots. These slots have the same capacity and support up to 400 bit/s ODUk crossover in a single slot.

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