A、7 layers from the application layer to the physical layer of the host shown by the dotted line of the OSI environment and the communication subnet
B、The physical transmission medium connecting the host is included in the OSI environment
C、If a host is not connected to the compute network, it may not need hardware and software to realize functions from the physical layer to the application layer
D、The processes of the host are controlled by the local operating system and do not belong to the OSI environment
喵查答案:The physical transmission medium connecting the host is included in the OSI environment