Question 11
Which of the following are the basic requirements of the DWDM system for the light source?
Question 12
When performing single-site commissioning of SDH equipment, it is necessary to check the single-site hardware: including cabinet and subrack installation inspection, power line resistance measurement, cable layout specification inspection, single-board appearance inspection, and some single-board inspections. DIP jumper check
Question 13
When congestion occurs, what are the packet discarding methods supported by OptiX PTN 1900&3900?
Question 14
Which of the following conditions can cause the board to insert the BDI maintenance signal back to the upstream site?
Question 15
Which of the following services can the EM20 support?