问题：

[多选] Which of the following correctly describe steps in the OSI data encapsulation process?（）

A . Transport layer divides a data stream into segments & adds reliability & flow control information
B . Data link layer adds physical source & destination address & an FCS to the segment
C . Packets are created when the network layer encapsulate a frame with source & destination host address& protocol related control information
D . Packets are created when the network layers adds layers 3 address & control information to a segment
E . The presentation layer translated bits into bits into voltages for transmission across the physical link