ISRO Computer Science (CSE) 2009 - Question 16

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Consider a system having "n" resources of same type. These resources are shared by 3 processes, A, B, C. These have peak demands of 3, 4, and 6 respectively. For what value of "n" deadlock won't occur

  • A. 15
  • B. 9
  • C. 10
  • D. 13

Answer: D. 13

Explanation: Deadlock condition: n < (3-1) + (4-1) + (6-1) + 1 = 11. If n >= 11, deadlock is impossible. 13 is a safe value.

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