H31-321 Online Practice Questions and Answers

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~ll#VC-4; Protection path 1: 33#VC-4~43#VC-4

C. Working path 2: 4#VC-4~7#VC-4; Protection path 2: 9#VC-4~12#VC-4

D. Working path 1: l#VC-4~4#VC-4; Protection path 1: 5#VC-4~8#VC-4

If the quality of two BITs clocks is the same, what may happen after a protection switchover of the clock source?

A. The NE fails to trace clocks.

B. Protection switching of clock sources occurs frequently.

C. The NE reports the clock signal loss alarm.

D. Pseudo synchronization occurs.

Which of the following bytes cannot be processed in pass-through mode on an ADM site using OptiX NGSDH equipment?

A. K1

B. K2

C. A1

D. A2

MSP and SNCP can coexist on a complex network. Which of the following statements are true?

A. Some timeslots have double protection.

B. By default, an SNCP switchover takes a shorter time than an MSP switchover.

C. Two SNCP switchovers will occur if SNCP holdoff time is not set.

D. Frequent switchovers do not affect services.

Which of the following are true about the NE ID of an ASON NE?

A. Each NE ID must be unique in an ASON domain.

B. The NE ID and IP address of an NE must be in different network segments.

C. NE IDs must be set before the ASON feature is enabled. After the NE ID of an NE is configured, the NE will not warm reset.

D. NE IDs, NE IDs, and NE IP addresses are independent from each other.

E. NE IDs and IP addresses must be in the same format. An NE ID cannot be 0.0.0.0,1.2.3.4, or

255.255.255.255.

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. TRUE

B. FALSE

Which of the following operations are required for monthly basic maintenance on the U2000?

A. Checking for the time of the U2000 server

B. Backing up system files

C. Changing the password for a current user

D. Checking operating system logs

Which of the following may cause abnormal ECC communication?

A. The optical port reports the B3_SD alarm. What may cause the HPJ.OM alarm?

B. The two interconnected optical boards have different rates.

C. The local NE uses Dl to D3, but the peer NE uses Di to D3 and D4 to D12.

D. The local NE uses Dl to D3, but the peer NE uses D4 to D12.

E. The DCC bytes of the optical board have been deleted.

Two SNCP rings are tangent. How many SCNP protection groups must be configured on the tangent node to achieve protection for inter-ring services, assuming one fiber cut on two rings or one fiber cut per ring?

A. 2

B. 4

C. 6

D. 8

Two SNCP rings are intersected. Which of the following statements is true about inter-ring service configuration?

A. Configure one unidirectional SNCP service pair on each intersecting node.

B. Configure two unidirectional SNCP service pairs on each intersecting node.

C. Configure four unidirectional SNCP service pairs on each intersecting node.

D. Do not configure any SNCP protection group on each intersecting node.

Which of the following may cause generation of discrete services in an NG-SDH system?

A. Trail query conditions are not met. For example, the fiber connections created on the NMS are inconsistent with the actual fiber connections.

B. Trail query restrictions exist. For example, among the multiple sources and sinks of a VC-4 service trail,

C. some are outbound optical ports, and the others are non-outbound optical or electrical ports.

D. Cross-connection configurations are incomplete or incorrect. Outgoing services exist.

E. The service trails created in an end-to-end manner is not activated on the NMS.

Generally, a central NE where ECC communication load is heavy and congestion is the most likely to occur is set as the gateway NE.

A. TRUE

B. FALSE

Which of the following statements is false about a network-level protection switching test?

A. Before a 1:1 linear MSP switching test, set the switching mode to single-ended.

B. During linear MSP switching, the NE reports the APSJNDI and MS_APS_INDI_EX alarms.

C. A network is configured with SNCP. When the laser of the peer port is disabled, the SDH analyzer connected to the local port indicates a transient service interruption.

D. Methods of testing MSP switching include single-ended loopback tests and dual-ended analyzer tests.

Which of the following are false about software installation on the PC that runs the NMS?

A. Ensure that anti-virus software is installed on the PC.

B. Game software can be installed after anti-virus software.

C. You can access the Internet on the PC.

D. Regular upgrade is not needed for the anti-virus software.

What kinds of service conversion are supported by an ASON network?

A. Conversion between traditional SNCP services and diamond services

B. Conversion between traditional services and gold services

C. Conversion between traditional services and silver services

D. Conversion between traditional services and copper services

E. Conversion between traditional services and iron services

F. Conversion between traditional services and tunnel services