Question 66

Which of the following is the service board type Y of MSTP equipment
  • Question 67

    In the U2000 system, which of the following menus can be used to check the current optical power of the device?
  • Question 68

    The PTN3900 device needs to complete the access and processing of E1 signals through the processing board, service daughter card, and interface board. Which of the following boards is not involved in the work?
  • Question 69

    The DWDM system has extremely high requirements on the stability of the light source. Which of the following factors will affect the stability of the light source?
  • Question 70

    Which of the following descriptions about electrical layer service configuration is wrong?