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

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 2

Seek analysis is for.

Question # 3

The system calls in UNIX is written using which language.

Question # 4

If two files on same partition point to the same inode structure they are called.

Question # 5

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

Question # 6

Size of virtual memory depends on

Question # 7

Re location bits used by relocating loader are a pacified by

Question # 8

Which command gives the first byte where the difference is in the file 1 & file2

Question # 9

Multiprogramming system

Question # 10

Which technique is used by operating systems to execute several program concurrently by switching back and forth.

Question # 11

By which of following the problem of thrashing is significantly affected.

Question # 12

Belady anomaly occurs in

Question # 13

Reference bit is used for

Question # 14

All device files are stored in which directory.

Question # 15

Which is the most important for Multi taskiing.

Question # 16

Fragmentation of a file system.

Question # 17

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

Question # 18

How applications communicates with kernel.

Question # 19

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

Question # 20

Which of the following does not interrupt an running process.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which type of software can be used to merge data of two files in one files.
A. System software
B. Networking software
C. Documenting software
D. utility software
2 Dijkstra's algorithm deals with
A. Mutual exclusion
B. Dead lock avoidance
C. Dead lock recovery
D. Real time processing
3 Which among following scheduling algorithms give minimum average waiting time.
A. FCFS
B. SJF
C. Round rabin
D. On priority
4 What is the command that can print lines of first file matching with second file.
A. Printline
B. cmp
C. com
D. comn
5 Printer in the file structure can be found in.
A. /etc
B. /html
C. /www
D. /dev
6 Dirty bit is used ot show
A. Page with corrupted data
B. Wrong page in memory
C. Page that a modified after being loaded in the cache memory
D. Page that is less frequently accessed
7 Which process is known for initializing a microcomputer with its OS.
A. Cold booting
B. Boot recording
C. Booting
D. Warm booting
8 Which command is used to know the LINUX version.
A. Uname
B. Vname
C. Iname
D. s name
9 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
10 Which is the most important for Multi taskiing.
A. Modularity
B. Time sharing
C. Multi programming
D. Multi user

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