WGU C191 MODULE 1 Questions With Complete Solutions | Latest Update Graded A+

OS A program that manages the computers hardware an provides the environment in which programs are executed - its a resource allocator and control program CPU The processor that performs the computations I/O devices Items such as the terminal, disks, video board, printer, network card key are all considered one of these Main Memory This contains data and programs used by the CPU System bus This is the communication medium between CPU, memory and peripherals kernel the one program running at all times on the computer - everything else is system or application program Kernel Mode When the OS has control of the computer rather than the user, it is in what mode? Privileged instructions These instructions are restricted to use only by the OS and make it so that the user may not access , memory, halt the machine, disable and enable interrupts, or address I/O directly