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H31-311-ENU PDF DEMO:
QUESTION NO: 1
The Erbium Doped Fiber Amplifier (EDFA) is a key component of the new-generation optical communication system.
Which of the following are the features of the EDFA? (Multiple Choice)
A. High output power
B. Low noise index
C. Amplification of any wavelengths
D. High gain
Answer: A,B,D
QUESTION NO: 2
PDM uses the polarization beam splitter to divide the laser into two perpendicular directions: x and y.
A. TRUE
B. FALSE
Answer: A
QUESTION NO: 3
Which of the following methods can be used to multiplex lower-order ODUk to higher-order
ODUk?
A. Time division multiplexing
B. Wavelength division multiplexing
C. Space division multiplexing
D. Frequency division multiplexing
Answer: A
QUESTION NO: 4
Some of the SNCP protection switching conditions are default, such as AU-AIS and TU-AIS.
Others conditions are optional, such as HP-TIM and HP-SLM. The optional conditions can be flexibly set based on service levels.
A. FALSE
B. TRUE
Answer: B
QUESTION NO: 5
The fiber core refractive index n1 must be Q the cladding layer refractive index n2, which is a necessary condition for transmitting optical signals in optical fibers.
A. lower than
B. higher than
C. equal to
Answer: B
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Updated: May 28, 2022