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Huawei H31-311_V2.5 Exam Syllabus Topics:

Huawei HCIA-Transmission V2.5 Sample Questions:

Question 1

During service configuration, there are two time slot modes. Huawei uses the staggered time slot mode by default.

A. True
B. False

Question 2

When 61.2M PDH signal is mapped into VC12, the mapping method used is ().

Question 3

The SDH frame structure is a rectangular block frame based on which of the following options?

A. Bytes
B. Block D frame
C. Bit

Question 4

Regarding the comparison between Raman amplifier and EDFA, which of the following statements is wrong?

A. The gain medium of the Raman amplifier is the transmission fiber; while the gain medium of the EDFA is EDF (doped fiber) D. The equivalent noise index of the Raman amplifier is smaller than that of the EDFA
B. Raman amplifiers can amplify signals of different bands by selecting different pump sources, so Raman amplifiers theoretically have no gain bandwidth limitation, while EDFA has a limited gain bandwidth.
C. The gain calculation/test method of Raman amplifier and EDFA is the same, both are "Gain = Output Power - Input Power"

Question 5

Which aspects of the fiber core have a decisive influence on the characteristics of optical fiber?
(Multiple choice)

A. Thickness
B. Refractive index of plastic sheath
C. Refractive index of the cladding material
D. Materials

Solutions: