Operating System (OS)
The memory allocation scheme subject to "external" fragmentation is

swapping
segmentation
multiple contiguous fixed partitions
None of these
pure demand paging

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Operating System (OS)
All of the following are TRUE regarding virtual memory EXCEPT

Any amount of RAM can be allocated to virtual memory
This temporary storage is called the swap file or page file
Virtual memory is the physical space o the hard drive
The setting for the amount of hard disk drive space to allocate virtual memory can be manually change

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