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

Re location bits used by relocating loader are a pacified by

Question # 2

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

Question # 3

Banker's algorithm deals with

Question # 4

Seek analysis is for.

Question # 5

Dijkstra's algorithm deals with

Question # 6

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

Question # 7

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

Question # 8

Belady anomaly occurs in.

Question # 9

Poor response times are caused by

Question # 10

Reference bit is used for

Question # 11

Belady anomaly occurs in

Question # 12

Semaphores are used to solve the problem of.

Question # 13

What is property of UNIX.

Question # 14

Which type of software can be used to merge data of two files in one files.

Question # 15

Dirty bit is used ot show

Question # 16

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

Question # 17

What control character signals the end of the input file.

Question # 18

The system calls in UNIX is written using which language.

Question # 19

Distributed systems should.

Question # 20

Problem of thrashing is affected significantly by

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 In real time OS, which is most suitable scheduling scheme.
A. Round robin
B. FCFS
C. Pre-emptive scheduling
D. Random scheduling
2 In which scheduling policies context switching never takes place
A. FCFS
B. Round robin
C. Shortest job first
D. Pre empitive
3 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
4 In which of the following usually a front end processor is used.
A. Virtual storage
B. Time sharing
C. Multi programming
D. Multi heading
5 When did IBM released the first version of its disk operating system DOS version 1.0
A. 1981
B. 1982
C. 1983
D. 1984
6 Dynamic allocation of storage areas with VSAM files is accomplished by
A. Hashing
B. Control splits
C. Over flow areas
D. Relative recording
7 Belady anomaly occurs in
A. Optimal replacement
B. FIFO
C. LRU
D. Both in FIFO and LRU
8 All device files are stored in which directory.
A. /etc
B. /dev
C. /www
D. /html
9 Which is non pre emptive
A. Round robin
B. FIFO
C. MS
D. MSF
10 Which one shows the name of the operating system.
A. U name -n
B. Uname -I
C. U name - m
D. U name -o

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