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

Printer in the file structure can be found in.

Question # 2

How applications communicates with kernel.

Question # 3

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 4

Which of following is not an advantage of multiprogramming.

Question # 5

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

Question # 6

What is property of UNIX.

Question # 7

Belady anomaly occurs in

Question # 8

Seek analysis is for.

Question # 9

What is the maximum number of processes that may enter simultaneously inside the critical section to avoid race condition.

Question # 10

Which command is used to set terminal input output characteristics

Question # 11

Banker's algorithm deals with

Question # 12

Which LINUX command is used to update the modification time of a file.

Question # 13

Which of the following is always there in a computer.

Question # 14

By which command content of a file can be searched.

Question # 15

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.

Question # 16

A series of statements explaining how the data is to be processed is called.

Question # 17

Which of the following memory allocation scheme is subject to external fragmentation.

Question # 18

Macintosh computer uses

Question # 19

Which is the most important for Multi taskiing.

Question # 20

Which is not a valid file type in LINUX.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which command is used to know the LINUX version.
A. Uname
B. Vname
C. Iname
D. s name
2 Which among following scheduling algorithms give minimum average waiting time.
A. FCFS
B. SJF
C. Round rabin
D. On priority
3 Which command gives the first byte where the difference is in the file 1 & file2
A. Diff
B. differ
C. Cmp
D. Compare
4 Banker's algorithm deals with
A. Dead lock prevention
B. Dead lock avoidance
C. Dead look recovery
D. Mutual exclusion
5 Which LINUX command is used to update the modification time of a file.
A. UPDATE
B. MODIFY
C. TOUCH
D. UNTOCUH
6 Which command is concerned with LINUX kernel log messages.
A. dmsg
B. dmesg
C. cmsg
D. cmesg
7 Which of the following is always there in a computer.
A. Batch system
B. Operating system
C. Time sharing system
D. Controlling system
8 Fragmentation of a file system.
A. Occurs only is file is not used properly
B. Can always the prevented
C. Happens in all file systems.
D. Can be removed by conmpaction
9 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
10 Four necessary conditions for dead lock are none pre emption circular wait and
A. Mutual exclusion
B. Race condition
C. Buffer overflow
D. None of above

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