The service types supported by the PND2 board used by the OSN 8800 are: (Multiple choice)

• A.VPWS
• B.VPLS
• C.EPLAN
• D.EPL

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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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When the input optical power of the amplifier at the receiving end OAU is lower than the nominal optical power, which of the following are wrong in the operation?

• A.Improve the sending optical power of the originator
• B.Adjust the dimmable fading before the terminating amplifier to increase the input optical power of the amplifier
• C.When the input optical power cannot be increased by adjusting the adjustable attenuator, the adjustable attenuation at the input of the amplifier is removed.
• D.Set the OAU gain so that its output reaches the nominal value

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Which of the following statements about Flexible ROADM is incorrect?

• A.The Flexible grid technology can flexibly set bandwidth and support flexible bandwidth allocation and scheduling.
• B.Flexible ROADM is compatible with existing networks.
• C.Improves spectrum utilization and meets the requirements for flexible scheduling in the 100 Gbit/s era.
• D.The WSMD2 board supports the Flexible ROADM configuration.

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Which of the following description of the PWE3 technology are correct? (Multiple choice)

• A.For PE3 emulation of Ethernet services, PW control words can be manually configured on the PE.
• B.PRE3 technology provides ATM, Ethernet, and TDM services with end-to-end virtual link emulation at the PS network boundary.
• C.The internal data services carried by PWE3 are visible to the core network.
• D.PWE3 technology belongs to the second layer VLL solution

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