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Huawei H12-931-ENU Exam Syllabus Topics:

Huawei Certified Internetwork Expert-Transmission Sample Questions:

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

A) The input optical power of the board is too high
B) The insertion loss between the TDC and RDC optical ports is too large (only for OAU boards)
C) The gain setting of the optical amplifier board is too low
D) The board that reported this alarm is faulty

2. The maximum dispersion tolerance of an OTU board is 800ps/nm, so on G.652 fiber, the dispersion limited distance can be roughly considered as

A) 10KM
B) 80KM
C) 60KM
D) 40KM

3. In the Linux system, the directory tree structure and the file system are two different concepts. The file system is the logical way of managing files in the operating system, and the directory tree structure is the physical storage method of files on the disk or partition.

A) FALSE
B) TRUE

4. Regarding the OSNR test of the OTN system, which of the following statements is correct? () (multiple choice)

A) The 40G and 100G wavelengths overlap due to the signal spectrum, and the OSNR value tested by the traditional OSA test method is low
B) The integral method test OSNR is also called the turn-off method, and the channel business will be interrupted during the test. And in the case of a small number of waves, the OSNR value measured by the integral method has a certain deviation from the true value
C) When using OSA to test OSNR, because the noise in the signal band cannot be directly tested, the out-of-band noise interpolation method is adopted to calculate the noise in the band
D) OptiX OSN8800/6800 equipment MCA online test 100G wavelength OSNR also uses the shutdown method
E) After the wavelength signal passes through a filter device such as D40, the noise power between channels will be reduced, so the OSNR value of the traditional OSA test is higher
F) The out-of-band noise interpolation method refers to inserting the noise of the instrument to replace the actual noise of the system

5. Which of the following functions can the PTN equipment handle the GE optical interface of the single board through the Ethernet? (multiple choice)

A) Docking with PTN equipment
B) Realize IEEE 1588 V2 synchronization
C) Docking with ODUk interface
D) Interfacing with customer equipment
E) Realize physical layer synchronization
F) Docking with STM-N interface

Solutions: