The rigid pipes that MS-OTN equipment can provide are ________. (Multiple choice)

Which of the following operating modes does the AT8 board support? (Multiple Choice)

Which of the following reasons does not cause optical power anomalies?

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.

Which of the following IP addresses are not part of the private IP address?