If access to a resource requires mutual exclusion then mutual exclusion must be supported by the OS

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Mutual exclusion is a synchronization mechanism that ensures that only one process or thread can access a shared resource at any given time. This requires the operating system to support mutual exclusion to ensure that only one process or thread can access the resource at a time, preventing conflicts and ensuring data integrity. Therefore, if access to a resource requires mutual exclusion, the operating system must support it.

If Access to a Resource Requires Mutual Exclusion Then Mutual