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 process is known for initializing a microcomputer with its OS.

Question # 2

What is property of UNIX.

Question # 3

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

Question # 4

Belady anomaly occurs in.

Question # 5

Tee command is used in LINUX for.

Question # 6

File record length

Question # 7

By which command content of a file can be searched.

Question # 8

Which one shows the name of the operating system.

Question # 9

Which of following is not an advantage of multiprogramming.

Question # 10

Which command in LINUX is used for description any command.

Question # 11

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 # 12

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

Question # 13

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

Question # 14

Poor response times are caused by

Question # 15

Which operating system use write through catches.

Question # 16

Scissoring enables

Question # 17

Belady anomaly occurs in

Question # 18

Semaphores are used to solve the problem of.

Question # 19

Dijkstra's algorithm deals with

Question # 20

Which is non pre emptive

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 What communication command provides communication to another user logged on by writing to the bottom of their terminal
A. Chat
B. Talk
C. Write
D. Sending
2 Which among following scheduling algorithms give minimum average waiting time.
A. FCFS
B. SJF
C. Round rabin
D. On priority
3 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
4 Banker's algorithm deals with
A. Dead lock prevention
B. Dead lock avoidance
C. Dead look recovery
D. Mutual exclusion
5 if the CPU scheduling policy is FCFS then what would be average waiting time.
A. 10 ms
B. 10.8 ms
C. 12 ms
D. 12.8 ms
6 What is meaning of ILP32
A. 32 bit integrated Long & Pointer
B. 32 bit integer long & pointer
C. 32 bit integer Long & Point
D. 32 bit integer , Lost & pointer
7 Dynamic allocation of storage areas with VSAM files is accomplished by
A. Hashing
B. Control splits
C. Over flow areas
D. Relative recording
8 Which LINUX command is used to update the modification time of a file.
A. UPDATE
B. MODIFY
C. TOUCH
D. UNTOCUH
9 What is the meaning of SVR 4
A. System five release 4
B. System version release 4
C. System five relocated 4
D. Storage files five release 4
10 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

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