In the NG-WDM system, which of the following boards supports optical line protection?
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?
Which of the following is the destination MAC address of the Layer 2 header of the data received by the PTN960 from the LTE base station?
Both the 1310nm and 1550nm transmission windows are low-loss windows. In the DWDM system, only the 1550nm transmission window is used. Which of the following options is the main reason?
In the MPLS label field of the PTN network, which item is the identification field of the stack bottom label?
Which of the following are the possible reasons for the disconnection of network elements?
In the PHBÌ‚ category of common FTN service flows, which of the following corresponds to the voice service?