Which of the following principles is used to improve the efficiency of I/O?
A) Reduce the number of times that data must be copied in memory while passing between device and application.
B) Move processing primitives into hardware, to allow their operation in device controllers to be concurrent with CPU and bus operation.
C) Increase concurrency by using DMA-knowledgeable controllers or channels to offload simple data copying from the CPU.
D) All of the above.
Correct Answer:
Verified
Q2: Component that measures elapsed time and to
Q3: Which of the following is FALSE about
Q4: Explain the concept of a bus and
Q5: Technique used to improve I/O efficiency by
Q6: In memory-mapped I/O
A) main memory of the
Q7: In polling I/O, the main inefficiency comes
Q8: What is interrupt chaining?
Q9: Interrupt chaining
A) allows CPU to defer processing
Q10: A current trend in I/O device technology
Q11: In a blocking system call, the execution
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