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Question: The access matrix approach to protection has the difficulty that (A)the matrix, if stored directly, is large and can be clumsy to manage (B)it is not capable of expressing complex protection requirements (C)deciding whether a process has access to a resource is undecidable (D)there is no way to express who has rights to change the access matrix itself "User answer" :"(B)it is not capable of expressing complex protection requirements" "Expected answer" :"the matrix, if stored directly, is large and can be clumsy to manage" | Hint: Think about how the matrix is physically represented and managed. Is it a feasible way to handle large amounts of data? |