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H31-311-ENU PDF DEMO:
QUESTION NO: 1
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
QUESTION NO: 2
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: 3
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: 4
Which of the following can be configured as the monitoring time of NE performance events?
A. Earlier than the current time
B. Any time
C. Same as the current time of the NE
D. Later than the current time
Answer: D
QUESTION NO: 5
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
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Updated: May 28, 2022