单项选择题

How does Booth's Algorithm improve binary multiplication ( )

A．It prevents overflow
B．It prevents underflow
C．It preserves the sign of the multiplication operation
D．It enhances the speed of the operation significantly

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单项选择题

在重叠寄存器窗口技术中，如果窗口数目偏少就会限制过程嵌套的深度。在伯克利的设计中，所用窗口数为( )。

A．4
B．8
C．12
D．16

单项选择题

When an amount of memory is requested that is less than the size of a page, but a full page is allocated, the resulting. waste of memory is called( ).

A．external fragmentation
B．internal fragmentation
C．inaccessible page faults
D．inaccessible garbage