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

Size of virtual memory depends on

Question # 2

Poor response times are caused by

Question # 3

Reference bit is used for

Question # 4

Dirty bit is used ot show

Question # 5

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

Question # 6

Which of following is not an advantage of multiprogramming.

Question # 7

Macintosh computer uses

Question # 8

Seek analysis is for.

Question # 9

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

Question # 10

Remote computing services involves the use of time sharing and

Question # 11

When did IBM released the first version of its disk operating system DOS version 1.0

Question # 12

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 13

Which type of software can be used to merge data of two files in one files.

Question # 14

By which command content of a file can be searched.

Question # 15

Semaphores are used to solve the problem of.

Question # 16

Which is signal user operating system.

Question # 17

All the abbreviations is vi editor can be shown by

Question # 18

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

Question # 19

Which one shows the name of the operating system.

Question # 20

Which operating system reacts in the acutal time.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 How applications communicates with kernel.
A. Not disclosed by linux team
B. SSL
C. System calls
D. Shell
2 Banker's algorithm deals with
A. Dead lock prevention
B. Dead lock avoidance
C. Dead look recovery
D. Mutual exclusion
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 Which one is true.
A. The linkage editor is used to edit program which have to later link together.
B. The linkage editor links object module during compling
C. The linkage editor links objects modules and resolves external reference between them before loading.
D. None of above
5 File can have.
A. Read access
B. Write access
C. Copy access
D. All of above
6 Which of the following memory allocation scheme is subject to external fragmentation.
A. Segmentation
B. Swapping
C. Demand paging
D. Multiple contiguous fixed partitions
7 Which technique is used by operating systems to execute several program concurrently by switching back and forth.
A. Partitioning
B. Multitasking
C. Windowing
D. Paging
8 For multiprogramming operating system.
A. Special support from processor is essential
B. Special support from processor is not essential
C. Cache memory is essential
D. None of abvoe
9 What is property of UNIX.
A. Multi user
B. Multi processes
C. Multi tasking
D. All of above
10 Which command is LINUX is concerned with backup.
A. tar
B. zip
C. cpio
D. untar

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