Operating Systems (100% Correct Answers)

What is faster, Main Memory or Registers? correct answers Registers are faster than main memory. What is smaller, Main Memory or Registers? correct answers Registers are smaller than main memory. 3 Types of registers typically available are: correct answers Data Registers (storing data), Address Registers (stack pointer, frame pointer), Condition Codes (addl, mult) The instruction execution consists of what two steps? correct answers Fetch, Execute Where does the processor fetch an instruction from? correct answers Cache / Main Memory Where does the processor hold the address of the next instruction? correct answers Program Counter (PC) Where does the processor hold the instruction fetched? correct answers Instruction Register (IR) A Computer's Basic Elements. List the 4 high level components of a computer: correct answers Processor, Bus (Control), I/O, Memory ...contains the address of an instruction to be fetched. correct answers What is the Program Counter? ...contains the instruction most recently fetched. correct answers What is the Instruction Register (IR)? -Exploits the hardware resources of one or more processors -Provides a set of services to system users -Manages secondary memory and I/O devices correct answers What is an Operating System? When an external device becomes ready to be serviced by the processor, the device sends this type of signal to the processor: correct answers Interrupt Signal Two accepted methods of dealing with multiple interrupts is to: correct answers Define priorities for the interrupts, Disable interrupts while an interrupt is being processed A common class of interrupts is: correct answers Program, Timer, I/O When a new block of data is written into cache memory, the following determines which cache location the block will occupy: correct answers Mapping Function