Operating System (OS)
The necessary conditions needed before deadlock can occur?

Mutual Exclusion, Hold and wait, No Preemption, Circular Wait
Mutual Exclusion, Hold and wait, Preemption, No Circular Wait
No Mutual Exclusion, Hold and wait, Preemption, Circular Wait
Mutual Exclusion, No Hold and wait, Preemption, Circular Wait

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Operating System (OS)
Which of the following statements is not true about the FORTRAN language?

None of these
FORTRAN is extensively used to write programs for performing scientific computations
A FORTRAN program, written for the IBM-PC, is totally different from a FORTRAN program written for execution on the SUN machine
All of these
FORTRAN is a high level language

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Operating System (OS)
The CPU, after receiving an interrupt from an I/O device

branches off to the interrupt service routine immediately
branches off to the interrupt service routine after completion of the current instruction
halts for a predetermined time
None of these
hands over control of address bus and data bus to the interrupting device

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