Huawei H31-341_V2.5 問題練習

Question No : 1
If only all network elements in a certain subnet are out of management on the network management system, and network elements belonging to other subnets communicate normally, which of the following reasons is impossible?

• A.Changing the IP address of the gateway NE by mistake
• B.NMS network management failure
• C.Misconnection or failure of optical fiber
• D.The network scale is too large, and the scale of ECC communication between network elements exceeds the processing capacity of network elements

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Question No : 2
In the deployment or expansion scenario, alarm reversal can reverse the alarm state and reduce a large number of unnecessary alarm reports. Which of the following descriptions about alarm reversal is correct?

• A.The setting of alarm reversal is based on the channel
• B.The setting of alarm reversal is based on the network element
• C.The setting of alarm reversal is port-based
• D.The setting of alarm reversal is based on the board

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Question No : 3
In a chain network, NE1, NE2, and NE3 are all OADM sites, and NE1 is a gateway network element, and uses OSC communication. When the optical monitoring board at the intermediate site NE2 fails, which of the following phenomena will not occur?

• A.The optical monitoring signal between NE1 and NE3 is interrupted
• B.The monitoring board in NE2 reports the BD_STAIUS alarm
• C.The OSC_LOS alarm is reported on the monitoring boards in NE1 and NE3
• D.Service interruption between NE1 and NE3

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Question No : 4
Which of the following descriptions about optical line protection is wrong?

• A.Optical line protection is double-ended switching. In the case of a single optical fiber interruption, there will be no inconsistency in sending and receiving routes.
• B.Use the OLP board to configure optical line protection. The RI1/T01 optical port of the 0LP board must be working, and the RI2/T02 optical port must be protection.
• C.OLP board switching is only related to the received optical power
• D.When protecting optical lines, use the dual-feed and selective-receiving function of the OLP single board to protect the line fibers between adjacent sites using separate routes

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Question No : 5
Which of the following services has the smallest frame period?

• A.ODU1
• B.ODU0
• C.ODU2
• D.ODU3

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Question No : 6
When PWE3 emulates TDM services, when the UNI side interface uses CRC4-multiframe access, which emulation method does PWE3 use?

• A.1 to 1 encapsulation
• B.CESOPSN
• C.N to 1 encapsulation
• D.SAToP

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Question No : 7
Which of the following commissioning ranges should the optical power of each single wave before combining (that is, the input optical power of the combining board) be within?

• A.Average single-wave optical power- 2dB<single-wave optical power<average single-wave optical power+ 3dB
• B.Average single-wave optical power- 1dB<single-wave optical power<average single-wave optical power+ 2dB
• C.Average single-wave optical power- 1dB<single-wave optical power<average single-wave optical power+ 3dB
• D.Average single-wave optical power- 2dB < single-wave optical power<average single-wave optical power+2dB

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Question No : 8
Which of the following descriptions about electrical layer scheduling is wrong?

• A.Inter-board cross-connect refers to the cross-connect configured between different boards. Inter-board cross-connection dispatches ODUk services between boards in a subrack through the backplane and centralized cross-connection boards.
• B.Intra-board cross-connect refers to the cross-connect configured between different ports on the same board.
• C.TTA and TDC boards support aggregation mode and non-aggregation mode.
• D.In the aggregation mode application scenario, it is necessary to cross within the board first, and then cross between boards.
• E.All cross-connects need to be configured on the network management system.

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Question No : 9
What operation does the PROG indicator of the NG WDM device board blink rapidly (green) indicate?

• A.Single board hardware failure
• B.Business is not working properly
• C.There is an important alarm on the board
• D.Write FLASH operation or software loading in progress

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Question No : 10
Which of the following options is not an advantage of EDFA optical amplifiers?

• A.High gain
• B.High output power
• C.The working optical bandwidth is wide
• D.Gain Flattening

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Question No : 11
Which of the following maintenance signals is not a proactive OAM?

• A.RDI
• B.AIS
• C.LT
• D.CC

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Question No : 12
If a fiber break occurs between the amplifier OA and the FIU, which of the following alarms will be reported by the system?

• A.MUT_LOS
• B.R_LOS
• C.OTS_LOS
• D.OMS_LOS

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Question No : 13
The indicator light of OptiXtrans E6600 LOSn is red and blinks once every 3 seconds. Which of the following is it?

• A.The optical port of the single board reports the R_LOS alarm
• B.The optical port of the single board reports the MS_RDI alarm
• C.The board is not in place
• D.The optical module is not in place

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Question No : 14
The path at the GE level is essentially a path at the Client level.

• A.True
• B.False

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Question No : 15
The OTUCn signal consists of n interleaved frames of 4080 columns and 4 rows, and n can take values of 2, 4, etc., representing 200G and 400G respectively.

• A.True
• B.False

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