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Home
Questions & Answer
Technology Questions & Answers
Operating System Questions & Answers
Operating System Questions & Answers
(Compiled from UPSC, SSC ,PSC ,IBPS previous question papers)
What tool is used to view the hardware and software loaded on a Windows server
A
KB Tool
B
System Information
C
System configuration
D
POST
E
Device manager
Which of following is not a condition of Dead Lock ?
A
Mutual Exclusion
B
No Preemption
C
Hold and Wait
D
Data Transfer
A hardware device which is capable of executing a sequence of instructions, is known as
A
CPU
B
ALU
C
CU
D
Processor
Root directory of a disk should be placed
A
at the fixed address in the main memory
B
at a fixed location on the disk
C
at the fixed location on system disk
D
anywhere on the disk
Which is non pre-emptive
A
Round robin
B
FIFO
C
MQS
D
MQSF
Scissoring enables
A
a part of data to be displayed
B
entire data to be displayed
C
full data display on fulll area of sceen
D
no data display
A series of statements explaining how the data is to be processed is called
A
instruction
B
compiler
C
program
D
interpretor
Daisy chain is a device for
A
connecting a number of controllers to a device
B
connecting a number of device to a controller
C
all of above
D
none of above
Remote computing services involves the use of timesharing and
A
multiprocessing
B
interactive processing
C
batch processing
D
real time processing
Four necessary conditions for deadlock are non pre-emption, circular wait, hold and wait and
A
mutual exclusion
B
race condition
C
buffer overflow
D
None of above
Poor response times are caused by
A
Busy processor
B
High I/O rate
C
High paging rates
D
Any of above
Dynamic allocation of storage areas with VSAM files is accomplished by
A
hashing
B
control splits
C
over flow areas
D
relative recording
To avoid the race condition, the number of processes that may be simultaneously inside the critical section is
A
12
B
3
C
1
D
0
E
Answer A
Which of the following does not interrupt an running process
A
A device
B
Timer
C
Schedular Process
D
Power failure
Which process is known for initializing a microcomputer with its OS
A
cold booting
B
boot recording
C
booting
D
warm booting
Which operating system use write through catches
A
UNIX
B
XENIX
C
ULTRIX
D
DOS
Creating a job queue is a function of
A
Spooler
B
Interperator
C
Complier
D
Drive
A high paging rate
A
may cause a high I/O rate
B
keeps the system running well
C
is a symptom of too much processor activity
D
always creates a slow system
A public key encryption system
A
Allows only the correct sender to decode the data
B
Allows only the correct receiver to decode the data
C
Allows anyone to decode the data
D
none of above
Fragmentation of a file system
A
occurs only is file is not used properly
B
can always be prevented
C
happens in all file systems
D
can be removed by compaction
Semaphores function is to
A
synchronize critical resources to prevent deadlock
B
synchronize processes for better CPU utilization
C
used for memory management
D
none of above
Operating system is
A
A collection of hardware components
B
A collection of input output devices
C
A collection of software routines
D
All of above
Shortest Job First executes first the job
A
with the least processor needs
B
that first entered the queue
C
that has been in the queue for the longest
D
that last entered the queue
The LRU algorithm
A
pages out pages that have been used recently
B
pages out pages that have not been used recently
C
pages out pages that have been least used recently
D
pages out the first page in a given area
A thread is
A
lightweight process where the context switching is low
B
lightweight process where the context swithching is high
C
used to speed up paging
D
used in dead locks
Multiprogramming systems
A
Are easier to develop than single programming systems
B
Execute each job faster
C
Execute more jobs in the same time
D
Are used only on large main frame computers
The part of machine level instruction, which tells the central processor what has to be done, is
A
Operation code
B
Address
C
Locator
D
Flip-Flop
Dispatcher function is to
A
put tasks in I/O wait
B
schedule tasks in processor
C
change task priorities
D
All of above
Which technique is used by operating systems to execute several programs concurrently by switching back and forth
A
Partitioning
B
Multitasking
C
Windowing
D
Paging
E
Answer And E
Problem of thrashing is affected significantly by
A
program structure
B
program size
C
primary storage size
D
all of above
1
2
3
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