Which layer of the public telecommunications network is the transport network at the level?

Answer(s): A

The TMX board is a type of tributary board that supports 10G rate signal access on the customer side.

Answer(s): B

Which of the following statements about insertion loss is wrong?

Each channel insertion loss is the loss of output optical power after each channel optical signal passes through the corresponding channel of the optical multiplexing device.
Insertion loss is an important performance indicator of a single physical channel of a splitter or combiner
In the insertion loss test, the insertion loss values of all channels of the splitter should be exactly equal, so you only need to test one of the channels.
The reason why the number of MR2 single-board cascades cannot be too large is that there is a punch-through insertion loss.

Answer(s): C