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

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

Question # 2

File inode number can be viewed by.

Question # 3

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

Question # 4

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

Question # 5

Which of following is not an advantage of multiprogramming.

Question # 6

Which one is true.

Question # 7

Which command is used to determine the path of an executable file.

Question # 8

Belady anomaly occurs in

Question # 9

Which command is used to copy files.

Question # 10

Poor response times are caused by

Question # 11

A high paging rate

Question # 12

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

Question # 13

Re location bits used by relocating loader are a pacified by

Question # 14

Shortest job First executes first the job.

Question # 15

A thread is.

Question # 16

Memory protection is normally done by

Question # 17

Super visor state is only allowed to.

Question # 18

How many links are created when we create a directory file.

Question # 19

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

Question # 20

What communication command provides communication to another user logged on by writing to the bottom of their terminal

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Sr.# Question Answer
1 Which among following scheduling algorithms give minimum average waiting time.
A. FCFS
B. SJF
C. Round rabin
D. On priority
2 Which is non pre emptive
A. Round robin
B. FIFO
C. MS
D. MSF
3 Semaphores are used to solve the problem of.
A. Race condition
B. Process synchronization
C. Mutual exclusion
D. Belady problem
4 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
5 A hardware device which is capable of executing a sequence of instructions, is known as.
A. CPU
B. ALU
C. CU
D. Processor
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 command is used to set terminal input output characteristics
A. Atty
B. stty
C. dtty
D. itty
8 File can have.
A. Read access
B. Write access
C. Copy access
D. All of above
9 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
10 Spooling most beneficial where
A. Jobs are I/O bound
B. Jobs are CPU bound
C. Jobs are evenly divided as I/O bound are CPU bond
D. All of above

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