An Analysis of a Running System Shows That the System

question 43

Multiple Choice

An analysis of a running system shows that the system is frequently being interrupted to execute program code related to interrupts. How does the CPU know when it must execute this code?

• A) The CPU periodically checks each device.
• B) IRQ information is carried by the control bus.
• C) The CPU is informed by the data bus.
• D) The cache controller generates a signal.

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