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1. Can an operating system implement the two operational modes (user vs system) if the hardware does not support a mode bit? Explain. 2. Give

1. Can an operating system implement the two operational modes (user vs system) if the hardware does not support a mode bit? Explain.

2. Give an example of an operating system that does not implement the dual-mode protection.

3. Explain the main difference that exists between multiprogramming and multitasking.

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