Question 56
What does the optical layer overhead include? (Multiple choice)
Question 57
The Raman amplifier uses which of the following effects?
Question 58
In the SDH optical synchronous transmission system, which of the following bytes is used to transmit the quality and weight and usage information of the clock source?
Question 59
The value of the MFAS byte increases with the sequence number of the OTUk/ODUK base frame and includes the most () base frames.
Question 60
EPL service realizes exclusive use of ports and bandwidth. Different users may need to share resources. In order to isolate user data, which of the following methods cannot be used to solve this problem?