Free Huawei H31-311-ENU Exam Dumps Questions & Answers

In an OSN 550, the CXL slot houses a functional board that integrates the system control and communication (SCC) unit, cross-connect unit, and clock unit. The functional board is available in multiple types depending on the functions and access capabilities provided by the OSN 550.

• A.  FALSE
• B.  TRUE

Which of the following is the default WTR time for MSP switching?

• A.  12 minutes
• B.  10 minutes
• C.  6 minutes
• D.  15 minutes

The K1 and K2 bytes can transmit APS switching signaling, and can also indicate that the multiplex section signal fails.

• A.  FALSE
• B.  TRUE

When a working PQ1 board is faulty, the device performs TFS protection switching.
Which of the following statements about the switching process are correct? (Multiple Choice)

• A.  The D75S board responds to the switching message by transferring services to the shared protection bus and stopping sending services to the faulty PQ1 board.
• B.  The cross-connect board detects that the PQ1 board is faulty through the board status bus.
• C.  If the protection PQ1 board is normal, the cross-connect board sends a switching message to the D75S corresponding to the faulty PQ1 board through the switching control bus.
• D.  The protection PQ1 board receives and processes the services that are transferred from the D75S board to the protection bus to complete the protection switching.

Which of the following statements about extended ECC is incorrect?

• A.  Automatic extended ECC indicates using a straight-through cable to connect the Ethernet ports of two NEs.
• B.  Extended ECC in specified mode indicates that the server and client need to be specified.
• C.  Extended ECC is classified into automatic extended ECC and extended ECC in specified mode.
• D.  Automatic extended ECC can be enabled on a maximum of four NEs. In manual extended ECC mode, each server can be connected to a maximum of three clients.