H31-311_V2-5 practice question 28 of 30

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).

Answer options

A: cross-connect board checks the PQ1 board fault through the board status bus. . Correct answer

B: 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. . Correct answer

C: 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 Correct answer

D: The protection PQ1 board receives and processes the services transmitted from the D75S board to the protection bus to complete the protection switching Correct answer

Correct Answer:

A. cross-connect board checks the PQ1 board fault through the board status bus. .; B. 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. .; C. 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; D. The protection PQ1 board receives and processes the services transmitted from the D75S board to the protection bus to complete the protection switching

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