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

00:00
Question # 1

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

Question # 2

Disk scheduling includes decinding

Question # 3

Which command in LINUX is used for description any command.

Question # 4

What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.

Question # 5

To display disk consumption of a specific directory which command is used.

Question # 6

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

Question # 7

In which scheduling policies context switching never takes place

Question # 8

File record length

Question # 9

which option of 'grep' displays the line number as well.

Question # 10

Which one shows the name of the operating system.

Question # 11

A hardware device which is capable of executing a sequence of instructions, is known as.

Question # 12

A thread is.

Question # 13

Solaris is product of.

Question # 14

Which operating system reacts in the acutal time.

Question # 15

How applications communicates with kernel.

Question # 16

Which command can be used to know the present working directory.

Question # 17

Scissoring enables

Question # 18

To avoid the race condition the number of process that may be simultaneously inside the critical section is

Question # 19

Size of virtual memory depends on

Question # 20

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.

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Sr. # Question Answer
1 Scissoring enables

A. A part of data to be displayed

B. Entire data to be displayed

C.Full data display on full area of seen

D. No data display

2 Re location bits used by relocating loader are a pacified by

A. Relocating loader

B. Assembler

C.Translator

D. Linker

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

A. Program size

B. Program structure

C.Primary storage

D. Secondary strorage

4 File record length

A. Should be chosen to match the data characteristics

B. Should be fixed

C.Should be variable

D. Vary system to system

5 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

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

A. Cold booting

B. Boot recording

C.Booting

D. Warm booting

7 Which command is used to set terminal input output characteristics

A. Atty

B. stty

C.dtty

D. itty

8 Which command is used to set limits on file size.

A. U limit

B. Alimit

C.dlimit

D. wilmit

9 What is property of UNIX.

A. Multi user

B. Multi processes

C.Multi tasking

D. All of above

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

A. Soft links

B. Hard links

C.Copy links

D. similar links

11 File can have.

A. Read access

B. Write access

C.Copy access

D. All of above

12 A hardware device which is capable of executing a sequence of instructions, is known as.

A. CPU

B. ALU

C.CU

D. Processor

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

A. Segmentation

B. Swapping

C.Demand paging

D. Multiple contiguous fixed partitions

14 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.

A. Buffer cache

B. Spooling

C.Pooling

D. Virtual memory

15 Problem of thrashing is affected significantly by

A. Program structure

B. Program size

C.Primary storage size

D. All of above

16 Which is the most important for Multi taskiing.

A. Modularity

B. Time sharing

C.Multi programming

D. Multi user

17 What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.

A. Defined values

B. Fixed values

C.Default values

D. None of the above

18 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

19 In which scheduling policies context switching never takes place

A. FCFS

B. Round robin

C.Shortest job first

D. Pre empitive

20 which option of 'grep' displays the line number as well.

A. -n

B. -i

C.-d

D. -al

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