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1
GATE CSE 2005
MCQ (Single Correct Answer)
+2
-0.6
Suppose n processes, P1,......., Pn share m identical resource units, which can be reserved and released one at a time. The maximum resource requirement of process Pi is Si, where Si > 0. Which one of the following is a sufficient condition for ensuring that deadlock does not occur?
A
$$\forall i,{s_i} < m$$
B
$$\forall i,{s_i} < n$$
C
$$\sum\limits_{i = 1}^n {{s_i}} < \left( {m + n} \right)$$
D
$$\sum\limits_{i = 1}^n {{s_i}} < \left( {m \times n} \right)$$
2
GATE CSE 2000
MCQ (Single Correct Answer)
+2
-0.6
Which of the following is NOT a valid deadlock prevention scheme?
A
Release all resources before requesting a new resource
B
Number the resources uniquely and never request a lower numbered resource than the last one requested.
C
Never request a resource after releasing any resource
D
Request and all required resources be allocated before execution.
3
GATE CSE 1997
MCQ (Single Correct Answer)
+2
-0.6
An operating system contains 3 user processes each requiring 2 units of resource R.The minimum number of units of R such that no deadlocks will ever arise is
A
3
B
5
C
4
D
6
4
GATE CSE 1993
MCQ (Single Correct Answer)
+2
-0.6
Consider a system having m resources of the same type. These resources are shared by 3 processes A, B and C, which have peak demands of 3, 4 and 6 respectively. For what value of m deadlock will not occur?
A
7
B
9
C
10
D
13
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Finite Automata and Regular Language Push Down Automata and Context Free Language Undecidability Recursively Enumerable Language and Turing Machine
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Computer Arithmetic Pipelining Machine Instructions and Addressing Modes Memory Interfacing IO Interface Alu Data Path and Control Unit Secondary Memory
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