Question: 1. Explain how a system call is executed by OS. Your answer must include these terms: software interrupt (3pts), interrupt vector table (3pts), and interrupt

1. Explain how a system call is executed by OS. Your

1. Explain how a system call is executed by OS. Your answer must include these terms: software interrupt (3pts), interrupt vector table (3pts), and interrupt service routine (4pts). Note that your answer should include all keywords to get credits. 2. Explain how the direct memory access (DMA) works (3pts) and how DMA reduces the overhead of CPU (7pts)

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