Case-Based Critical Thinking Questions
Case 9-1
Your friend Javier has a quiz tomorrow on Windows 10 device resources. You are helping him study.
You ask Javier to name the system resource that signals to the microprocessor that the device is requesting an action. Javier correctly answers ____.
A)the IRQ
B)the DMA channel
C)the I/O address
D)the memory range

Question

Quizplus · Accepted Answer

The IRQ (Interrupt Request) signals to the microprocessor that the device is requesting an action. DMA (Direct Memory Access) channel controls the transfer of data between the device and memory. I/O (Input/Output) address specifies the location of the device interface in memory. Memory range is the range of memory addresses used by a device to access memory. Out of the given options, only the IRQ serves as the signal to the microprocessor.