Huawei Certified Internetwork Expert-Transmission (H12-931-ENU) Free Practice Test

Question 1

Regarding the description of OSS, what is wrong is

A. The network layer of OSS is above NMS, and NMS is generally used to realize the management function of network element equipment.

B. OSS system is mainly used to improve the work efficiency of equipment maintenance personnel.

C. U2000 supports multiple northbound interfaces such as SNMP, TL1, XML, CORBA, etc., which can realize rapid integration with the operator's OSS system.

D. OSS system (Operation Support System) refers to a software system that provides operators with functions such as communication equipment performance management, inventory management, business management, and fault management.

Correct Answer: A

Question 2

When spreading the existing network WDM system, there is no need to evaluate which of the following performances

A. Optical power flatness of the receiving end (with MCA configuration)

B. Optical power of OTU/OA

C. PMD parameters of the link

D. The bit error rate before error correction of the OTU at the receiving end

Correct Answer: C

Question 3

PID (Photonics Integrated Device) is an optoelectronic integrated device, PID single board can realize multi-wavelength integration, 40Km without optical amplifier, 80Km without dispersion compensation ()

A. FALSE

B. TRUE

Correct Answer: B

Question 4

NG-SDH products initially support the board-level hot patch function. V100R008 starts to support both board-level hot patch and patch package functions (the hot patch upgrade method supported by different main control types is different), and it is supported from V100R010 and later versions.

A. Patch package function

B. Support board-level hot patch function

C. Board-level hot patch and patch package function

D. neither support

Correct Answer: A

Question 5

NG-SDH equipment allocates ECC channel numbers according to certain principles. For example, by default, first insert a four optical port board in slot 4, the board will be assigned channel numbers 0, 1, 2, 3, and then insert an SL16 board in slot 2, then the board will be The assigned channel number is 4. If the SL16 board in slot 2 is unplugged at this time and a four optical port board is inserted in slot 8, what is the assigned channel number?

A. 5, 6, 7, 8

B. 4, 6, 7, 8

C. Random allocation

D. 4, 5, 6, 7

Correct Answer: D

Question 6

Some statements about Sybase database, the correct one is () (multiple choice)

A. sybase database also supports the use of graphical interface configuration

B. When importing a large amount of data in batches, the import fails, and the error code is: Failed to access the database? This is because the database link is not enough, just modify the database link

C. When the database appears in the suspect state, it cannot be used or deleted. You can set the status of the database, let it be at the checkpoint, automatically truncate the log, and then restart the database

D. Cannot delete the database. When it prompts that the database is being used, you can use sp_who to find out the spid of the corresponding database, and use the kill command to kill the spid.

Correct Answer: A,B,C,D

Question 7

Throughput refers to the maximum rate of the network without frame loss. During the test, the test starts from the maximum line rate frame rate Xmax that the device can support. When the device starts to lose frames, reduce the frame rate. When the device does not lose frames Time, increase the frame rate

A. FALSE

B. TRUE

Correct Answer: B

Question 8

For the OptiX OSN 8800 T16 subrack, the subrack ID is set by the DIP switch on the AUX board, and the subrack ID is displayed on the AUX board. The master and slave subracks are connected through the ETH1/ETH2 interfaces on the AUX board.

A. FALSE

B. TRUE

Correct Answer: A

Question 9

Corresponding to the ISO seven-layer model, Ethernet corresponds to the physical and network layers of the seven-layer model. The Ethernet-defined specifications include the MAC sublayer and physical layer of the data link layer.

A. FALSE

B. TRUE

Correct Answer: A

Question 10

The sequence of downstream signals flowing through the functional blocks of the SL16 circuit board is

A. SPI, MST, RST, MSP, MSA, HPT

B. HPT, MSA, MSP, MST, RST, SPI

C. SPI, RST, MST, MSP, MSA, HPT

D. HPT, MSP, MSA, MST, RST, SPI

Correct Answer: C

Question 11

Use the integral method to measure the OSNR value of a 100G signal, read from the OSA, the integrated value of the signal power + noise power in the channel interval is 9.68uW, the integrated value of the noise power in the channel interval is 29.58nW, and the signal center frequency is within 0.1nm. The integrated power is 7.395nW, the OSNR value is ()?

A. 10log [(9.68-0.02958)/0.007395]

B. 10log [(9.68-0.007395)/0.02958]

C. 10log [(9.68+0.02958)/0.007395]

D. 10log [(9.68+0.007395)/0.02958]

Correct Answer: A

Question 12

All on-site operations can be performed according to their own experience, and there is no need to strictly follow the change operation steps

A. FALSE

B. TRUE

Correct Answer: A

Question 13

In the U2000 dual-system hot backup system, the active site fails and the standby site fails to start. Possible reasons () (multiple choice)

A. Communication between main and standby is interrupted

B. Database exception

C. There is an abnormality in the volume at the standby site

D. High disk space usage

Correct Answer: B,C,D

Question 14

Which of the following descriptions are correct in daily maintenance?

A. For the convenience of collecting data, if you don't know the customer, you can directly create a network element user to collect data

B. Unplug and plug the board with the customer's consent

C. During the cutover process, it is found that other unrelated network elements report an alarm, but the customer does not know that it will be processed directly

D. Without the authorization of the customer, the network management performs configuration data operations

Correct Answer: B

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Huawei Certified Internetwork Expert-Transmission (H12-931-ENU) Free Practice Test