The core component of ROADM is a wavelength selective switch (WSS).
Answer : A
To prevent the optical power at the receive end of an OTU board from being excessively high, you must configure a fixed attenuator according to the actual optical power. The fixed attenuator is usually configured at the transmit end.
Answer : B
Which of the following are not features of WDM network expansion?
Answer : A, D
If the mask of an IP subnet is 27 bits, how many hosts does the subnet have?
Answer : B
Which of the following statements about LSP is false?
Answer : A
Optical power is an Important indicator of a WDM system and directly affects the transmission distance of signals. Therefore, the output optical power of a site must be as high as possible to ensure that signals can reach the peer site.
Answer : B
The receiver of an OTU board is an avalanche photodiode (APD). Which of the following is within the input optical power range?
Answer : C