What are core network, data network, transmission network, access network, bearer network and switching network?

Core network and access network are divided according to the level of the network, which are generally used in campus network or Internet. Data networks and switches are divided according to the content of transmission, and are generally used in telecommunication networks; Transmission networks and bearer networks are divided according to transmission contents, and are usually used in mobile communication networks. The core network of mobile Internet is wired IP network, and the access network is wireless.

for reference only