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

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

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Operating System (OS)
Which of the following is not a characteristic of a daisy chaining priority control scheme?

the number of control lines is independent of the number of devices on the chain
None of these
the failure of one device may affect other devices on the chain
it is relatively easy to add more devices to the chain
priority is programmable

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Operating System (OS)
A program

is a sequence of instructions
is a device that performs a sequence of operations specified by instructions in memory.
None of these
is the device where information is stored
is typically characterized by interactive processing and time of the CPU

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