The memory management unit (mmu) restricts the memory access of an application between the base and base + bound addresses. another policy is to allow the application to access all parts of the memory except for the resident monitor memory.
a ) explain why in general purpose computing systems the second approach is not applicable.
the basic answer to this is by not allocating a specific range for mmu provides then you open up the chance to have other potential programs to be overwritten and therefore less stable.
b) give an example application where the second approach is used.

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