In long-distance wavelength division transmission networks, the purpose of adding an electrical relay board is to change the direction of light.

• A.True
• B.False

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Which of the following products does not have POE features at all?

• A.P613E
• B.EA5821
• C.P602E
• D.P813E

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The convergence part of the all-optical campus "IP+optical" solution is passive, that is, no power supply is required.

• A.True
• B.False

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Which board in OSN9800 equipment supports FC1600 service? (Multiple Choice)

• A.T210
• B.T230
• C.LTX
• D.LDC

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For cable TV network upgrade and reconstruction, regional/provincial backbone transmission networks should give priority to adopting mesh protection structures. The single-channel capacity of OTN should be no less than 100Gbps. For key links, OTN systems with a single-channel capacity of 200Gbps/400Gbps can be considered.

• A.False
• B.True

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