1
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.
2
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
3
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
4
GATE CSE 1992
MCQ (Single Correct Answer)
+2
-0.6
A computer system has 6 tape drives, with n process completing for them. Each process may need 3 tape drives. The maximum value of n for which the system is guaranteed to be deadlock free is:
A
2
B
3
C
4
D
1
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