Subject Specialist Computer Science

PPSC FPSC KPPSC BPSC SPSC Lecturer Computer Science Test 52

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There will be 25 multiple choice question in the test.
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Test Instructions:-
Test Name	Lecturer Computer Science
Subject	Computer Science Test 52
Test Type	MCQs
Total Questions	25
Total Time	20 Minutes
Total Marks	100

You have 20 minutes to pass to the quiz.

Lecturer Computer Science Online Test No. 52

1 / 25

In monolithic operating system:

Most or all the layers execute in kernel mode.

Interaction only takes place between adjacent layers.

Functions are organized hierarchically.

None of these.

2 / 25

I/O modules in computer:

Controls the operation of the computer.

Stores data and program.

Move data between the computer and external environment.

Provides communication among processors and main memory.

3 / 25

When operating system always run on a particular processor and that particular processor do all scheduling and process management then this is an example of:

Master/slave architecture

Symmetric multiprocessor

Cluster

None of these.

4 / 25

In semaphore when the order of processes that are waiting to be removed from the queue is first in first out (FIFO) then it is called:

Weak semaphore

Strong semaphore

Binary semaphore

None of these.

5 / 25

The following is not true for master/slave architecture:

A failure of master brings down the whole system

Operating system kernel runs on master processor only.

Operating system kernel can run on any processor either master or slave.

All scheduling and process management is done on master processor.

6 / 25

The following:

Start? Fetch next instruction? Execute Instruction ? Halt, represents

Instruction cycle with interrupt

Instruction cycle without interrupt

Instruction cycle with two interrupts

None of these.

7 / 25

Instruction register contains:

The address of an instruction to be fetched.

The instructions most recently fetched.

The data to be written into memory.

The data to be read from memory.

8 / 25

In semaphore, the process executing the wait is blocked if:

The semaphore value becomes negative

The semaphore value become positive

The semaphore value becomes non-positive

The semaphore value becomes nonnegative.

9 / 25

The page table that is maintained by operating system:

Shows frame location for each page of the process

Shows actual address in main memory

Referrer memory location to memory

None of these.

10 / 25

The resident set of process is:

A process that are actually in main memory at anytime.

A process that are actually in virtual memory at any time.

A process that are actually in disk.

None of these.

11 / 25

The OS/2 is the operating system that support:

Single thread per process

Multiple thread per process

Single process

None of these.

12 / 25

Physical address (absolute address) in memory partitioning is:

Actual location in main memory

A reference to memory location independent of current assignment

A logical address

None of these.

13 / 25

In semaphore the process blocked by wait operation is unblocked if:

Semaphore value becomes non negative

Semaphore value becomes non positive

Semaphore value is negative

Semaphore value is positive.

14 / 25

The concept used to support multi programming environment on a computer is:

Virtual memory

Hierarchy of physical memory

Display of multiple windows

None the above.

15 / 25

In micro kernel architecture following is false:

Intersection takes place only between adjacent layers.

Intersection takes place via micro kernel.

It supports portability.

It supports object-oriented operating system.

16 / 25

In the following processes: a = a + 1; b = 2 × b; b = b + 1; a = 2 × a;the output is.

a > b

a < b

a = b

None of these.

17 / 25

Instruction processing consists of:

Fetch cycle only

Execution cycle only

Fetch and Execution cycle both

None of these.

18 / 25

A Semaphore is initialized to:

Negative integer value

Positive integer value

Non-negative integer value

Non-positive integer value.

19 / 25

The compaction is the technique in memory management that is used to over come:

Internal fragmentation

External fragmentation

Both (A) and (B)

None of these.

20 / 25

The master/slave architecture is an example of:

Distributed memory processing

Shared memory processing

Symmetric multi processing

None of these.

21 / 25

Operating System is:

Software

Hardware

Software and Hardware both

None of these.

22 / 25

The wait operation:

Decrements the semaphore value

Increments the semaphore value

Fixes the semaphore value

None of these.

23 / 25

The frame:

Can hold exactly one page of data

Can hold more than one page of data

Can hole two page of data

None of these.

24 / 25

In shared memory multi processor:

Computer communicate to each other by fixed paths

Computer communicates to each other via a shared memory.

Each processing element is a self contained computer.

None of these.

25 / 25

The cluster is a case of:

Distributed memory

Shared memory

Master/slave architecture

Symmetric multi processor.

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