What are operating systems and what is their purpose? How do they affect applications that are loaded on the system? Custom Essay

DQ 1
What are operating systems and what is their purpose? How do they affect applications that are loaded on the system?

DQ 2
Should DMA access to main memory be given higher priority than processor access to main memory? What is the purpose and technique of DMA logic?

DQ 3
What are the differences between an interrupt and a trap? Provide an example of each. What is their importance?