PPSC Computer Science Topic 19 MCQ's Test Preparation

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MCQ's Test For PPSC Computer Science Topic 19 Operating System

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PPSC Computer Science Topic 19 Operating System

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Question # 1

Which command is used to copy files.

Question # 2

Which among the following is used to write small program to control Linux Functionalities.

Question # 3

By which command content of a file can be searched.

Question # 4

In real time OS, which is most suitable scheduling scheme.

Question # 5

Which of following is not an advantage of multiprogramming.

Question # 6

Which process is known for initializing a microcomputer with its OS.

Question # 7

Which is non pre emptive

Question # 8

In the shell , by default all variables are considered and stored as.

Question # 9

Scissoring enables

Question # 10

Poor response times are caused by

Question # 11

Super visor state is only allowed to.

Question # 12

Belady anomaly occurs in

Question # 13

Which command can be used to know the present working directory.

Question # 14

Distributed system should.

Question # 15

if the CPU scheduling policy is FCFS then what would be average waiting time.

Question # 16

A hardware device which is capable of executing a sequence of instructions, is known as.

Question # 17

To display disk consumption of a specific directory which command is used.

Question # 18

What is the name of values that are automatically provided by software to reduce keystrokes.

Question # 19

Fragmentation of a file system.

Question # 20

Multiprogramming system

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 The system calls in UNIX is written using which language.
A. Java
B. C
C. C++
D. Assembly
2 Which command is used to set limits on file size.
A. U limit
B. Alimit
C. dlimit
D. wilmit
3 Dynamic allocation of storage areas with VSAM files is accomplished by
A. Hashing
B. Control splits
C. Over flow areas
D. Relative recording
4 Poor response times are caused by
A. Busy processor
B. High I/O rate
C. High paging rates
D. any of above
5 Which operating system use write through catches.
A. UNIX
B. XENIX
C. ULTRIX
D. DOS
6 File record length
A. Should be chosen to match the data characteristics
B. Should be fixed
C. Should be variable
D. Vary system to system
7 Kernel minimizes the frequency of disk access by keeping a pool of internal data buffer which helps to increase the response time this is known as.
A. Buffer cache
B. Spooling
C. Pooling
D. Virtual memory
8 Disk scheduling includes decinding
A. Which should be accessed next
B. Order in which disk access requests must be serviced
C. The physical location of the file
D. the logical location of the file
9 Belady anomaly occurs in
A. Optimal replacement
B. FIFO
C. LRU
D. Both in FIFO and LRU
10 What is the name of values that are automatically provided by software to reduce keystrokes.
A. Data values
B. Default values
C. Defined values
D. Fixed vallues

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