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 among following scheduling algorithms give minimum average waiting time.

Question # 2

Which command is LINUX is concerned with backup.

Question # 3

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

Question # 4

By which command content of a file can be searched.

Question # 5

What are the global locks.

Question # 6

Which operating system use write through catches.

Question # 7

Memory protection is normally done by

Question # 8

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

Question # 9

Daisy chain is a device for

Question # 10

Which operating system reacts in the acutal time.

Question # 11

Distributed system should.

Question # 12

Which command is used to copy files.

Question # 13

Which one is true.

Question # 14

What is the command that can print lines of first file matching with second file.

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

Which command is used to set limits on file size.

Question # 17

Re location bits used by relocating loader are a pacified by

Question # 18

Which is not a valid file type in LINUX.

Question # 19

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

Question # 20

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

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which one shows the name of the operating system.
A. U name -n
B. Uname -I
C. U name - m
D. U name -o
2 How applications communicates with kernel.
A. Not disclosed by linux team
B. SSL
C. System calls
D. Shell
3 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
4 A thread is.
A. Lightweight process where the context switching is low
B. Lightweight process where the context switching is high
C. Used to speed up paging
D. Used in dead locks
5 What is the command that can print lines of first file matching with second file.
A. Printline
B. cmp
C. com
D. comn
6 Belady anomaly occurs in
A. Optimal replacement
B. FIFO
C. LRU
D. Both in FIFO and LRU
7 To avoid the race condition the number of process that may be simultaneously inside the critical section is
A. 1
B. 3
C. 0
D. 12
8 Which command is used to set limits on file size.
A. U limit
B. Alimit
C. dlimit
D. wilmit
9 Which is signal user operating system.
A. MS-DOS
B. UNIX
C. XENIX
D. LINUX
10 Reference bit is used for
A. Implementing LRU page replacement algorithm
B. Implementing NRU algorithm
C. To check the page table entry in the cache memory
D. None of above

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