Which of the following statements about the access network is correct is _____

Which of the following statements about the access network is correct is _____
A . access into generally refers to the connection between the user and the network operator of the network close to the user central office
B . Compared with backbone network, access network is often the bottleneck of network transmission speed
C . access network typically includes a user transmission system, terminal multiplexers or network,
D . The access network can also be Ethernet

Answer: ABCD