This CompTIA A+ Essentials quiz has been made to see whether you are completely prepared for the real exam. This practice test will help you pass by familiarizing you with the material and the ensuring that you know the structure. This quiz has been made to test your knowledge about the IRQ(Interrupt Request Line)
assignments in modern PCs. Read the questions carefully and answer. So, let's try out this quiz. Good Luck!
COM2/COM4
COM1/COM3
LPT1
No specific device is assigned; this IRQ handles cascaded signals from IRQs 8-15.
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IRQ 1
IRQ 7
IRQ 8
IRQ 0
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IRQ 8
IRQ 6
IRQ 4
IRQ 2
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Real-time clock
Secondary IDE controller
Primary IDE controller
System timer
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IRQ 9
IRQ 8
IRQ 10
IRQ 7
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IRQ 17
IRQ 16
IRQ 15
IRQ 14
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IRQ 2
IRQ 3
IRQ 1
IRQ 6
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None; it is free, by default
PS/2 mouse
Primary IDE controller
Keyboard
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Video interrupt handler
Keyboard
Math coprocessor
Primary IDE controller
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COM1/COM3
Primary IDE controller
LPT1
LPT2
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IRQ 1
IRQ4
IRQ 7
IRQ 6
IRQ 5
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IRQ 12
IRQ 11
IRQ 10
IRQ 13
IRQ 9
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IRQ 2
IRQ 9
IRQ 0
IRQ 1
IRQ 8
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