17 Lecture

What is machine reset? A. The process of restoring a computer system to its initial state B. The process of shutting down a computer system C. The process of updating the software of a computer system Answer: A What are machine exceptions? A. Unexpected events that occur during the operation of a computer system B. Expected events that occur during the operation of a computer system C. Events that occur during the boot-up process of a computer system Answer: A Which component of the computer system is responsible for handling machine exceptions? A. Memory B. Input/output devices C. Control unit Answer: C Which of the following is not an example of a machine exception? A. Divide-by-zero error B. Invalid memory access C. Operating system update Answer: C What is the purpose of a machine reset? A. To restore a computer system to its initial state B. To update the software of a computer system C. To shutdown a computer system Answer: A When is a machine reset typically performed? A. During the boot-up process B. During the shutdown process C. When the system becomes unresponsive Answer: A Which of the following is not a component that is reset during a machine reset? A. Control unit B. Memory C. Input/output devices Answer: C What is the role of the control unit in handling machine exceptions? A. To generate an exception handler routine B. To shut down the system C. To clear the memory Answer: A What can cause a machine exception? A. Divide-by-zero error B. Invalid memory access C. Expected events during the operation of a computer system Answer: A and B Which of the following is a technique used to prevent machine exceptions? A. Machine reset B. Exception handling C. Error correction codes Answer: C

What is a machine reset and why is it necessary? Answer: Machine reset is the process of restoring a computer system to its initial state. It is necessary to ensure that the system is in a known state and to address any issues that may have caused the system to become unstable. What are machine exceptions and how are they handled? Answer: Machine exceptions are unexpected events that occur during the operation of a computer system. They are handled by the control unit, which generates an exception handler routine to handle the exception and prevent the system from crashing. How does a machine reset differ from a software reset? Answer: A machine reset involves resetting all components of the system, including the hardware, while a software reset only involves resetting the software components of the system. What are some common machine exceptions? Answer: Common machine exceptions include divide-by-zero errors, invalid memory access, and illegal instruction. How can machine exceptions be prevented? Answer: Machine exceptions can be prevented by using error correction codes and implementing proper exception handling routines. What is the role of the control unit in a machine reset? Answer: The control unit is responsible for resetting all components of the system during a machine reset. What is the difference between a hard reset and a soft reset? Answer: A hard reset involves physically resetting the system by turning it off and on again, while a soft reset involves resetting the system through software commands. Why is it important to handle machine exceptions properly? Answer: It is important to handle machine exceptions properly to prevent the system from crashing and potentially losing valuable data. Can machine exceptions be caused by software errors? Answer: Yes, machine exceptions can be caused by software errors, such as invalid memory access or illegal instructions. How can machine reset be used to troubleshoot hardware issues? Answer: Machine reset can be used to troubleshoot hardware issues by restoring the system to a known state and identifying any issues that may have caused the system to become unstable.