An interrupt handler is a(n):

MS-DOS is a ____________ operating system.

The blocks of code, included in the operating system, that software applications interact with are known as:

The operating system controls access to the processor by assigning a(n)____________ to each task requiring the processor’s attention.

The unique signal, generated by a device, that tells the operating system that it is in need of immediate attention is called an:

____________ is the ability of an operating system to control the activities of multiple programs at the same time.