Which of the following protection methods has the highest cost?

• A.1+1 protection in OTU board
• B.Optical line OLP protection
• C.Equipment 1+1 protection
• D.ODUk SNCP

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The unique features of GPON full-light network relative to traditional switch solutions are: (Multiple Choice)

• A.The transmission scheme of single fiber and double fiber, as well as P2MP technology, limited optical fiber resources.
• B.The product is rich in form and can meet different application scenarios such as education, medical care, parks, buildings, etc.
• C.The full light is passive light network, the network is simpler, and the network is more flexible
• D.Rich interface, you can provide a variety of access business needs such as office, telephone, and effective TV. One network carries all business

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Which of the following railway businesses is SDH business? (Multiple choice)

• A.EOS
• B.STM-N
• C.2M
• D.Video Surveillance

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Which of the following are not OTN protection types? (Multiple choice)

• A.client 1+1
• B.ODUk SPRing
• C.ODUk SNCP
• D.Linear Multiplex Section Protection
• E.Multiplex Section Shared Protection Ring
• F.Optical line 1+1

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Which of the following devices cannot be mounted in a 19-inch cabinet?

• A.OSN 1800 I
• B.OSN 9800 U32
• C.OSN 1800 II
• D.OSN 1800 V

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