[Aug-2022] H12-931-ENU Pre-Exam Practice Tests Exam Questions and Answers for HCIE-Transmission Study Guide [Q48-Q70]

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[Aug-2022] H12-931-ENU Pre-Exam Practice Tests | Exam Questions and Answers for HCIE-Transmission Study Guide

Huawei Certified Internetwork Expert-Transmission Certification Sample Questions

Q48. What is the incorrect reason for the OA_LOW_GAIN alarm?

The input optical power of the board is too high

The insertion loss between the TDC and RDC optical ports is too large (only for OAU boards)

The board that reported this alarm is faulty

The gain setting of the optical amplifier board is too low

Q49. What may be the reason why the RAU Raman board cannot gain normally? (multiple choice)

Raman pump is not turned on

The current value of the input optical power is -40dbm

Raman board failure

The return loss is too large

Q50. In the acceptance test, the MPI-S reference point of the line power test refers to the output end of the transmitting amplifier.

TRUE

FALSE

Q51. Hybrid MSTP devices support inter-domain (packet domain, TDM domain) intercommunication, which of the following descriptions is correct? (multiple choice)

TDM services are carried by end-to-end SDH

Packet services are carried by end-to-end packet

TDN services are carried by end-to-end packets

Packet services are carried by end-to-end SDH

Q52. The GXCS single board of the OptiX OSN3500 equipment is upgraded to SXCS. In the case of active/standby configuration, the business will be interrupted during the upgrade process.

TRUE

FALSE

Q53. Regarding the configuration description of the U2000 northbound CORBA interface, what is wrong is

The U2000 northbound CORBA interface and the U2000 server run on the same machine, and the machine configuration is required to be able to install and run the U2000 server, and no additional hardware configuration is required

Set the host address, enter the host name or IP address according to the network management plan and design. The “host” mentioned here refers to the computer that provides CORBA services

The default port numbers of normal mode and SSL mode in the basic configuration of U2000 CORBA are different

In the U2000 CORBA configuration, configure at least one of the filtering virtual network element switch and virtual network element switch collar

Q54. User A and user B belong to the Team group. User A has a file File1.
After running the command “$ chmod 750 File1”, the following statement is wrong.

User A has read/write/execute permissions to File1

User B cannot modify File1 and does not have this permission

Users who are not in the Team group, only have read access to File1

Users in the Team group have read and execute permissions on File1

Q55. Which of the following descriptions are correct for error alarms (multiple choice)

FEC_BEF_COR_ER enables the FEC function to be effective, FEC error rate before error correction, indicating the error statistics of the received OTUk signal (including OTUk overhead), and the error rate before error is not zero, indicating the error rate introduced by the transport layer The bit error may have affected the OTUk signal.

FEC_AFT_COR_ER enables the FEC function to be valid. The error rate after FEC error correction indicates the error statistics of the OTUk signal (including OTUk overhead) after FEC encoding and error correction. The error after correction is not zero, which means transmission The bit error introduced by the layer may have affected the OTUk signal.

OTUk_ES (OTUk_BEE ), ODUk_PM_ES (ODUk PM_BBE) are OTUk/ODUk errored seconds (background error block), the count is the error count of the OTUk/ODUk signal that is counted, non-zero means OTUk/ODUk signal The second in which a bit error occurred (the number of errored blocks).

OTUk_SES and ODUk_PM_SES are OTUk/ODUk severely errored seconds, and the count is not zero, indicating that the OTUk/ODUk signal has generated a large bit error in seconds (1 second counting error bits more than 15% of the maximum transmission byte)

Q56. What are the TDM circuit simulation encapsulation protocols? (multiple choice)

SAToP protocol

GFP protocol

CESoPSN protocol

ML-PPP protocol

Q57. If the OSN6800 device wants to achieve 1588V2 time synchronization, it must be configured with an electrical crossover board

TRUE

FALSE

Q58. A network element cannot join the smart domain after the smart feature is enabled. The possible reasons are: (multiple choice)

The network element data is not uploaded;

The smart domain is not refreshed;

The electrical layer DCC is not surging;

ODU1_PM_AIS exists on the N board;

N board DCC management RES_ODU channel status is not enabled;

Q59. Which of the following IP addresses is a class C IP address

C2.A8.D2.e1

10.110.192.111

10011010.01101110.10000000.01101111

127.0.0.1

Q60. TN55TQX+TN53NQ2 network element) —–TN53NQ2+TN55TQX (B network element) networking, the network element is a synchronous system, 10GELAN MAC transparent mapping mode, ALS function is turned on, and the connection with the router is normal. At this time, change the 55TQX 10GELAN mode of A network element to BIT transparent mapping mode, then what are the new alarms of A network element 53TQX (multiple choice)

ODU2_LOFLOM

ALS_ACTIVE

REMOTE_FAULT

REM_SF

Q61. In the Ethernet service OAM, the name of the node that can initiate the OAM operation is

MEP

MIP

Q62. Regarding the reporting of the OTUk_BDI alarm, the following statement is wrong.

Only the WDM side port will report OTUk_BDI

The downstream station’s corresponding OTU board receives OTUk_AIS

The downstream station’s corresponding OTU board receives OTUk_TIM

The corresponding OTU board of the downstream station receives OTUk_SSF

Q63. In NG-SDH equipment, which of the following conditions will not cause TPS switching to occur?

3.3V power supply undervoltage

58M crystal oscillator abnormal

Chip abnormality (SD538, SA527, CPLD)

Report T_LOSEX on the working branch board

Q64. Which of the following reasons will form discrete services on network management?

In 5.0 platform equipment, a certain network element in a complete path is not in the current network management

Intermediate network element service cross-connection is not configured

A complete path is configured between the online NE and the pre-configured NE

The service between two network elements in the same network management, under the premise that the correct time slot is selected, the cross-connection of one network element is delivered through the U2000, and the other is delivered through the command line software and the network management is not uploaded

Q65. What is correct about traffic policing and traffic shaping?

Traffic policing can only be used in the inbound direction, and traffic shaping can only be used in the outbound direction

Traffic policing can only be used in the outbound direction, and traffic shaping can only be used in the inbound direction

Traffic policing can be used in the outbound and inbound directions, and traffic shaping can only be used in the outbound direction

Traffic policing can be used in the outbound and inbound directions, and traffic shaping can only be used in the inbound direction

Q66. Which of the following statements about the ALC function and configuration principles of the OTN system is correct? () (multiple choice)

The ALC function can automatically adjust the output optical power of the amplifier in which the line attenuation changes. Except for the first site, other sites must be equipped with power detection units

It is recommended that the number of network elements in the ALC link is less than 20, otherwise the ALC adjustment may time out and cause failure

Each ALC link has a unique ID, and ALC nodes can belong to different DCN subnets

The detection and reference unit of the first node cannot use the same optical port of the same board

If there are two cascaded OA boards in the node, the first node only configures the second OA board as the reference unit, and do not deploy the power detection unit

The “working mode” of the OA board and RAU1/RAU2 board must be configured as “gain lock”, if it is configured in other modes and ALC is configured, the ALC will not be adjusted

Q67. In the ASON network, when a root optical fiber contains part of the multiplex section, the working time slot of the multiplex section constitutes (); the protection time slot of the multiplex section constitutes (), and the time slots unrelated to the multiplex section constitute (). If resources are reserved for the time slot (for static service use), this part of the time slot is divided into ().
Please select the answer that meets the requirements from the options below in order.

working link, protected link, unprotected link, static service dedicated link

Protected link, working link, unprotected link, unprotected link

working link, protection link, unprotected link, unprotected link

working link, protection link, unprotected link, protection link

Q68. The 1588V2 clock enters the non-tracking working mode, and the alarm CLOCK_NO_TRACE_MODE is reported. What is the possible reason?

Some nodes in the network have activated the SSM protocol, and some of the SSM protocols have not been activated

The original priority table of the system clock is not configured, and the network element uses its own default priority table

In the clock source priority table, all other clock sources except the internal source are missing or the frequency deviation is too large

PTP clock configuration error

Q69. The security management of network management mainly includes object management, password management, access control management and decentralized domain management, etc. The security management of network elements includes network element access control, network element user management, and network element operation authority management.

TRUE

FALSE

Q70. The reason why the ODUk_PM_OCI alarm statement is correct (multiple choice)

The board corresponding to the upstream site has an ODUk_PM_OCI alarm

Loopback is set for the corresponding board of the opposite station

The corresponding board of the opposite station is not configured with crossover and the non-intrusive monitoring function is enabled on the local end

This alarm will not cause interruption of the optical interface carrying service