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WDM Signal Flows Advanced

Authored by Alan Turing

Other

Professional Development

Used 4+ times

WDM Signal Flows Advanced
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7 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

An OLA site can also be monitored by the ESC.

True
False

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

DWDM technology uses multiple wavelengths as carriers to transmit the signals of carrier channels over the same optical fiber. Generally, DWDM technology is used with single-mode optical fibers because they have low loss but provide high bandwidth.

True
False

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

In the colorless scenario, the M40V/D40 board is used to add and drop wavelengths.

True

False

4.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

In a WDM system, a dielectric thin film filter is ideal when the number of wavelengths is smaller than ( ).

4
10
16
20

5.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

Compared with a dense wavelength division multiplexing (DWDM) system, a coarse wavelength division multiplexing (CWDM) system provides a certain number of wavelengths and a transmission distance within ( ) km, which greatly reduces system cost and has strong flexibility.

50
100
200
20

6.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

Which of the following site types cannot implement service adding/dropping?

OTM
OLA
FOADM
ROADM

7.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

Which of the following is the main reason why OSC signals are not amplified by the EDFA with service signals?

Supervisory signals are prevented from interfering with service signals.
Even if the OA fails, the OSC is still available.
The optical power of the OSC board is lower than the amplification sensitivity of the OA board.
The OSC rate is too low. If the OSC is amplified, the energy efficiency is too low.

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