TestOut LabSim A+ Certification Practice Exam 2026 – The All-in-One Guide to Ace Your Certification!

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What does IRQ stand for in the context of device management?

Integrated Resource Key

Interrupt Request Line

The term IRQ stands for Interrupt Request Line in the context of device management. An IRQ is a signal that devices send to the processor to indicate that they require attention or service. Each hardware device connected to a computer can have its own IRQ line, which allows the CPU to prioritize and manage multiple device requests efficiently.

When a device needs processing power, it sends an interrupt request to the CPU, halting or pausing its current activities to handle the request from the device. This mechanism is critical for maintaining system responsiveness and ensuring that multiple devices can operate smoothly without conflicts. Understanding IRQs is essential for troubleshooting hardware issues and optimizing device performance within the system architecture.

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Internal Resource Queue

Input Resource Key

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