Question 66
Which of the following are other complex network structures derived from ring networking? (Multiple choice)
Question 67
The current sparse wavelength division multiplexing system generally works in the band from 1271nm to 1611nm. Which of the following is the channel spacing?
Question 68
Please drag and drop the functional unit of the WDM system to the corresponding English abbreviation module.


Question 69
Which of the following causes a single channel to report the BEFFEC_EXC alarm?
Question 70
Which of the following factors are considered that ASON supports routing strategies based on? (Multiple choice)

