(a) Briefly describe the function that measure the efficiency of an operating system. (b) What is DMA? Why it is used for high-speed I/O devices?…

(a) Briefly describe the function that measure the efficiency of an operating system.

(b) What is DMA? Why it is used for high-speed I/O devices?

(c) Explain the following Scheduling algorithm:

  • (i) Round Robin
  • (ii) FCFS
  • (iii) Priority scheduling

(d) Define Deadlock. Write down the necessary conditions for deadlock.

From the BPSC Sub-Assistant Maintenance Engineer 2020 – Written exam, question 2 of 6.

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