What is an interrupt in a computer system?

• An interrupt is a permanent change in CPU operation.

• An interrupt is a hardware component that increases CPU speed.

• An interrupt is a type of software that runs continuously.

• An interrupt is a signal that temporarily halts the CPU to handle an event.

How does the processor execute instructions?

• The processor executes instructions by only fetching data.

• The processor executes instructions by writing back results first.

• The processor executes instructions by fetching, decoding, executing, and writing back results.

• The processor executes instructions by decoding without fetching.

What analogy is used to explain interrupts?

• A librarian organizing books.

• A traffic light controlling cars.

• A waiter in a restaurant.

• A chef in a kitchen.

What are the steps in the fetch-decode-execute cycle?

• Load, Process, Store

• Retrieve, Analyze, Output

• Input, Compile, Display

• Fetch, Decode, Execute

What happens when an interrupt occurs during execution?

• The CPU saves the current state, executes the interrupt handler, and then resumes the interrupted program.

• The CPU ignores the interrupt and continues execution without changes.

• The program crashes immediately without saving any state.

• The CPU halts all operations until the interrupt is resolved.

How does a device signal the processor for attention?

• A device signals the processor for attention by sending an interrupt signal.

• A device signals the processor through a power surge.

• A device signals the processor by flashing its LED lights.

• A device signals the processor by sending a data packet.

What role does the interrupt service routine play?

• The interrupt service routine handles interrupts to ensure timely responses to events.

• The interrupt service routine manages memory allocation.

• The interrupt service routine compiles code for execution.

• The interrupt service routine is responsible for user authentication.

Why are interrupts important in computing?

• Interrupts slow down the processing of tasks.

• Interrupts are irrelevant in modern computing.

• Interrupts are important because they enable efficient multitasking and real-time processing of events.

• Interrupts are only used for debugging purposes.

What might happen if interrupts were not handled?

• All tasks will be completed successfully regardless of interrupts.

• The system may become unresponsive and fail to process critical tasks.

• The system will automatically restart without issues.

• The system will run faster and more efficiently.

How does the processor check for interrupts?

• The processor checks for interrupts by resetting all registers.

• The processor checks for interrupts by polling interrupt lines or using an interrupt controller.

• The processor checks for interrupts by executing a specific instruction.

• The processor checks for interrupts by waiting for a timer to expire.