Free H31-311_V2.5 Exam Braindumps (page: 23)

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Which of the following is the multiplexing method of SDH?

  1. flexible mapping
  2. Asynchronous multiplexing
  3. flexible mapping and asynchronous multiplexing
  4. Flexible mapping and synchronization multiplexing

Answer(s): D



When the working PQ1 board is oversized, the device will perform and the TFS protection will be reversed. Which of the following statements about the switching process are correct? (Multiple choice).

  1. cross-connect board checks the PQ1 board fault through the board status bus. .
  2. If the protection PQ1 board is normal, the cross-connection board sends a switching message to
    the D75S corresponding to the faulty PQ1 board through the switching control bus. .
  3. The D75S board responds to the switch message by transmitting the service to the shared
    protection bus and stopping sending the service to the tyrant PQ1 board
  4. The protection PQ1 board receives and processes the services transmitted from the D75S board to
    the protection bus to complete the protection switching

Answer(s): A,B,C,D



When the U2000 is synchronized, the same network metadata as the U2000 is not uploaded to the U2000, and the data that exists on the U200 but does not exist on the network element is deleted.

  1. True
  2. False

Answer(s): B



In the OSN550, the CXL slot contains a function board that integrates a system control and communication (SCC) unit, a cross-connecting unit, and a clock unit Depending on the functionality and access features provided by the OSN550, there are several types of dashboards

  1. True
  2. Error

Answer(s): A






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