Understanding CPU Interrupts and Handling

What is an interrupt in the context of a CPU?

• A signal sent to the CPU to inform it that an event has happened

• A process that speeds up the CPU clock

• A method to cool down the CPU

• A type of software update

Where are interrupts recorded in a CPU?

• In the main memory

• In the interrupt register

• In the cache memory

• In the hard drive

Which of the following is an example of a hardware-generated interrupt?

• A key has been pressed

• A software update is available

• A file is saved

• A program is compiled

What is the first step in handling an interrupt?

• Save the Processor State

• Execute the Interrupt Service Routine (ISR)

• Interrupt Request (IRQ)

• Restore the Processor State

What is the purpose of saving the processor state during interrupt handling?

• To increase the CPU speed

• To allow resumption of the interrupted process later

• To decrease power consumption

• To update the operating system

What is an Interrupt Service Routine (ISR)?

• A routine that saves the processor state

• A special function that handles the specific event of an interrupt

• A routine that restores the processor state

• A routine that increases the CPU clock speed

Why are interrupt priorities used in a system?

• To ensure all interrupts are ignored

• To ensure critical events are handled promptly

• To slow down the CPU

• To increase the number of interrupts

What is an Interrupt Vector Table?

• A table that stores the current state of the CPU

• A table that assigns a vector pointing to each interrupt's ISR

• A table that lists all software applications

• A table that manages memory allocation

What is the role of an Interrupt Controller?

• To manage memory allocation

• To manage interrupt requests and enforce priority rules

• To increase the CPU clock speed

• To update the operating system

What happens during nested interrupts?

• Low-priority interrupts are ignored

• High-priority interrupts can preempt the handling of a low-priority interrupt

• All interrupts are processed simultaneously

• The CPU shuts down