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The following question based on operating system topic of computer mcq
(a) Continuation
(b) Blocks
(c) Block and Continuation both
(d) None of these.
The correct answers to the above question in:
Answer: (b)
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Question : 1
In system buffer cache, used in UNIX, following not true
a) It is a disk cache
b) It is not a disk cache
c) Data transfer between buffer cache and user process space always occurs using DMA.
d) I/O operations with disk are handled through buffer code.
Answer »Answer: (b)
Question : 2
The amount of memory (in bytes) required for a block bitmap is
a) Disk size x 8
b) Disk size/ (8 x file system block size)
c) File system block size/disk size
d) None of these.
Answer »Answer: (b)
Question : 3
In real time scheduling: A: Static table driven approach, B: Static priority driven preemptive approach, C: Dynamic planning based approach; 1- A static analysis of feasible scheduler of dispatching is done and implemented. 2- A static analysis of feasible schedules of dispatching is done and assigns priorities to tasks. 3- Feasibility is determined at run time.
a) A - 1, B - 2, C - 3
b) A - 2, B - 3, C - 1
c) A - 3, B - 1, C - 2
d) None of these.
Answer »Answer: (a)
Question : 4
A set or resource allocations such that the system can allocate resources to each process in some order, and still avoids a deadlock is called
a) unsafe state
b) safe state
c) starvation
d) greedy allocation
Answer »Answer: (b)
Question : 5
A policy in memory management referred as clock policy because one can visualize the page frames as laid out in
a) Straight line
b) Rectangle
c) Circle
d) Square
Answer »Answer: (c)
Question : 6
The most efficient data set organization is
a) a sequential file
b) an ISAM file
c) variable depending upon the usage of the data set
d) a partitioned data set
Answer »Answer: (c)
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