Free Huawei H31-321 Exam Dumps Questions & Answers

When the NEs of a Huawei network are connected to third-party/external equipment you can create virtual NEs that are mapped to the third-party/externa I equipment and then create cross-subnet trails between Huawei NEs and virtual NEs. In this manner, discrete services can be prevented.

• A.  FALSE
• B.  TRUE

Generally, what is the maximum number of NEs on an ECC subnet, to ensure communication performance of an ECC subnet?

• A.  96
• B.  64
• C.  256
• D.  128

During normal operation of a network, the conditions that trigger a protection switching are generated on the working channel but services fail to be automatically switched to the protection channel. Services are interrupted, but the MS protocol status is normal on the NMS. What are the possible causes?

• A.  The cross-connect or line board is faulty.
• B.  The SCC board is faulty.
• C.  The configuration data on the NE and those on the NMS are inconsistent. As a result, the parameters of MSP nodes do not take effect.
• D.  Incorrect fiber connections between boards
• E.  Equipment power failure

What are the common causes for pointer justification?

• A.  The cross-connect board is faulty, resulting in degraded clock quality. AU and TU pointers will adjust.
• B.  Clock sources or clock source levels are configured incorrectly. As a result, there are two clock sources on one network or a timing loop occurs. AU and TU pointers will adjust.
• C.  The tributary board is faulty, resulting in justification of both AU and TU pointers.
• D.  The power supply for the subrack is faulty, resulting in abnormal operation of clock boards. AU and TU pointers will adjust.

NG-SDH equipment supports MS-shared protection. Which of the following are false about timeslot mapping between the working path and protection path?

• A.  Working path 2: 17#VC-4~20#VC-4; Protection path 2: 49#VC-4~52#VC-4
• B.  Working path 1: l#VC-4~4#VC-4; Protection path 1: 5#VC-4~8#VC-4
• C.  Working path 1: l#VC-4~ll#VC-4; Protection path 1: 33#VC-4~43#VC-4
• D.  Working path 2: 4#VC-4~7#VC-4; Protection path 2: 9#VC-4~12#VC-4