Using the path method to create a Client path fails. What are the possible reasons? (Multiple choice)
The basic principles of STP device fault location are? (Multiple choice)
Which of the following are limitations of the alarm and performance analysis methods? (Multiple Choice)
In WDM systems, when using less than () wavelength, it is ideal to use a dielectric thin film filter (TFF).
After starting the extended SSM protocol, in addition to determining the clock quality level and priority, the clock ID is also determined. After receiving the clock signal with the ID, the network element considers that the source is unavailable if it is judged to be the clock signal sent by the station. In this way, even after passing through multiple sites, the network element can still recognize the clock signal sent by itself, preventing the formation of a timing loop.
