Which of the following advantages does the OSI reference model have ? (Multiple Choice)

 Which of the following advantages does the OSI reference model have ? (Multiple Choice)
A . The OSI reference model provides compatibility and standard interfaces between devices and promotes standardization.
B . The OSI reference model is a theoretical description of the information transmission process that occurs between network devices and defines how to implement each layer of function through hardware and software.
C .  An important feature of the OSI reference model is its layered architecture. The hierarchical design method can transform huge and complex problems into several smaller and easy-to-handle problems.
D . The above statements are incorrect.

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Answer:   AC