Which two correctly describe steps in the OSI data encapsulation process? (Choose two.)

Which two correctly describe steps in the OSI data encapsulation process? (Choose two.)
A . The transport layer divides a data stream into segments and may add reliability and flow control information.
B . The data link layer adds physical source and destination addresses and an FCS to the segment.
C . Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information.
D . Packets are created when the network layer adds Layer 3 addresses and control information to a segment.
E . The presentation layer translates bits into voltages for transmission across the physical link.

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Answer: AD