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ISRO | ISRO CS 2009 | Question 13
  • Last Updated : 19 Nov, 2018

Which of the following statements about synchronous and asynchronous I/O is NOT true?
(A) An ISR is invoked on completion of I/O in synchronous I/O but not in asynchronous I/O
(B) In both synchronous and asynchronous I/O, an ISR (Interrupt Service Routine) is invoked after completion of the I/O
(C) A process making a synchronous I/O call waits until I/O is complete, but a process making an asynchronous I/O call does not wait for completion of the I/O
(D) In the case of synchronous I/O, the process waiting for the completion of I/O is woken up by the ISR that is invoked after the completion of I/O


Answer: (A)

Explanation: Refer: GATE CS 2008 | Question 64

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