Is the following description correct? The link layer defines electrical and mechanical processes and functions to activate, maintain, and remove lines when the systems at both ends are connected.
Two-stage optical splitter is connected to the PON, the first-stage is 1:2, the second-stage optical splitter is 1:16, what is the total splitting ratio?
The monitoring of environmental quantities refers to the monitoring of some environmental factors that may cause equipment damage, malfunctions, etc. Which of the following is not the subject of environmental monitoring?
Is the following description correct? The alarm levels of the MA5600T can be divided into five levels: critical, major, minor, warning, and cleared.