The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots

• A.SNCP ring
• B.Bidirectional MSP ring
• C.Unidirectional path protection ring
• D.All of the above

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Forced switching, fiber switching, manual switching and motion switching are decreased in order of priority.

• A.Error
• B.True

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When there is a Critical Error In Seconds (SES) in the PM portion of the ODUk layer, which of the following alarms is reported by NMS?

• A.ODUk_PM_UAS
• B.ODUk_PM_SESR
• C.ODUk_PM_ES
• D.ODUk_PM_SES

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Which of the following is the electrical layer cost of OTN? (Multiple choice).

• A.ODUk
• B.OPUk
• C.och
• D.OTUR

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EPL services use ports and bandwidth exclusively, and different users may need to share resources. Which of the following methods can be used to isolate user data?

• A.VLAN ID
• B.All of the above
• C.QinQ Technical Wood
• D.MPLS tags

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