Question 136
In the colored scenario, the TM20fTD20 board can be used to add/drop wavelengths.
Question 137
Which of the following converts non-standard wavelengths into standard wavelengths specified by ITU-T in the WDM system structure?
Question 138
PRBS can be used to test that the SDH service is healthy and that the protection reversal function is working.
Question 139
Which of the following different types of ESC are divided according to the principles of implementation? (Multiple choice)
Question 140
When performing fiber cut-off test on an ordinary MSP ring, which of the following alarms will be reported? (Multiple choice).