Multicast technology effectively solves the problem of single-point transmission and multipoint reception, and realizes efficient data transmission from midpoint to multipoint in IP network.

The establishment, maintenance and dismantling of the word path between the SIP user and the server are done through the interaction of the --series of messages, so that every information contained in the SIP text has a --nature, There is no phenomenon in which a single information value appears multiple times.

Huawei OLT supports device diagnosis based on service flows. Which of the following statements is incorrect?

(Multi-select) Query ppPOE simu-lation results on the MDU side as follows From the query results, it can be judged ()

The (radio) 10G GPON system uses XGEN frames to encapsulate data, and the PORT ID is defined in the XGEN header as () bits.