Operating System - 9

LIST OF ATTEMPTED QUESTIONS AND ANSWERS

True/False
Question
Prototyping is a tool to test the design of system
Correct Answer
True
Your Answer
False

Multiple Choice Multiple Answer
Question
Kernel threads are generally :-
Correct Answer
Slower to create , Difficult to manage
Your Answer
Difficult to manage , Faster than user thread , Faster to create

Multiple Choice Single Answer
Question
The concept of OOPS was first introduced in
Correct Answer
Simula Language
Your Answer
Simula Language

Multiple Choice Single Answer
Question
The insulation of data from direct access by the program is known as :
Correct Answer
Data hiding
Your Answer
Abstraction

True/False
Question
Many to Many model multiplexes many user level threads to a smaller or equal number of kernel threads.
Correct Answer
True
Your Answer
True

Select The Blank
Question
Like worms, ________ are designed to spread into other programs and can wreak havoc in a system.
Correct Answer
Viruses
Your Answer
Viruses

Multiple Choice Multiple Answer
Question
The two versions of NT are :
Correct Answer
WindowsNT workstations , WindowsNT server
Your Answer
WindowsNT workstations , WindowsNT server

True/False
Question
A virus is a fragment of code embedded in a legitimate program
Correct Answer
True
Your Answer
False

True/False
Question
An I/O bound process spend more of its time doing I/O than it spends doing computations.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
It has been said that Pascal and C programs are collections of procedures and C++ programs are collections of
Correct Answer
Classes
Your Answer
Classes

Multiple Choice Single Answer
Question
The process by which objects of one class acquire properties of objects of other class is called
Correct Answer
Inheritance
Your Answer
Inheritance

Select The Blank
Question
A ________ is a buffer that holds output for a device such as printers.
Correct Answer
Spool
Your Answer
Spool

Multiple Choice Single Answer
Question
C++ is basically a procedural language having extension of
Correct Answer
Object Oriented technology
Your Answer
Object Oriented technology

True/False
Question
Object-oriented programming focuses on the integrated data and functionality as discrete units that have both knowledge (data) and capabilities (functions). Procedural programs, on the other hand, focus on functions and how they act on data.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Most CPUs have two interrupt request lines. Which are they?
Correct Answer
Maskable , Non maskable
Your Answer
Maskable , Non maskable

True/False
Question
The I/O scheduler rearranges the order of the queue to improve the overall system efficiency and the average response time experienced by application
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
How big is a class object?
Correct Answer
Is as big as sum of the sizes of its member variables
Your Answer
Is as big as sum of the sizes of its member variables

Multiple Choice Single Answer
Question
In UNIX, files are organized in tree-structured :-
Correct Answer
Directories
Your Answer
Directories

Multiple Choice Single Answer
Question
The number of processes that are completed per time unit is called as:-
Correct Answer
Throughput of system
Your Answer
Throughput of system

Multiple Choice Multiple Answer
Question
There are two types of Message passing, they are :-
Correct Answer
Synchronous , Asynchronous
Your Answer
Synchronous , Asynchronous

Multiple Choice Single Answer
Question
If Dog derives from Mammal, and Mammal derives from Animal, then -
Correct Answer
Dog inherits Animal's functions and data
Your Answer
Dog inherits Animal's functions and data

Select The Blank
Question
The positioning time sometimes called the ________.
Correct Answer
Random-access time
Your Answer
Seek time

Multiple Choice Single Answer
Question
Collection of similar datatypes is called as
Correct Answer
Array
Your Answer
Array

Multiple Choice Single Answer
Question
The pure Object Oriented language is
Correct Answer
Java
Your Answer
Java

Multiple Choice Multiple Answer
Question
To protect the system, we must take security measures at two levels, such as :-
Correct Answer
Physical level , Human level
Your Answer
Local level , Global level

Select The Blank
Question
In some operating system, spooling is handled by an ________ .
Correct Answer
In-kernel thread
Your Answer
User thread

Multiple Choice Multiple Answer
Question
Supervisor mode is also known as :-
Correct Answer
System mode , Privileged mode , Monitor mode
Your Answer
Privileged mode , Monitor mode , Special mode

Match The Following
Question
Correct Answer
Your Answer
Thread
Light-weight process
Light-weight process
Process
PCB
Thread library
User thread
Thread library
PCB
Kernel thread
Operating system
Operating system

Select The Blank
Question
The ________ of a process is represented in the PCB of a process.
Correct Answer
Context
Your Answer
Control

Select The Blank
Question
________ is defined as a cooperation between object codes produced by different software vendors & written in different programming languages.
Correct Answer
Interoperability
Your Answer
Interoperability

Multiple Choice Multiple Answer
Question
In a uniprocessor system, there is :-
Correct Answer
Single processor , Single running process
Your Answer
Single processor , Single running process

Multiple Choice Single Answer
Question
In UNIX operating system, each process is identified by its :-
Correct Answer
Process identifier
Your Answer
Process identifier

Multiple Choice Single Answer
Question
As process enter the system, they are put into :-
Correct Answer
Job queue
Your Answer
Job queue

Match The Following
Question
Correct Answer
Your Answer
Algorithm where in it takes largest available hole
Worst fit
Worst fit
The algorithm in which memory manager scans along the list of segments until it finds a hole that is big enough
First fit
First fit
Algorithm in which keeps the track of suitable hole
Next fit
Optimal fit
Algorithm which searches entire list and takes smallest hole that is adequate
Best fit
Best fit

True/False
Question
Linux is a multi-user, multitasking system with a full set of UNIX-compatible tools.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
The main difference between structure and class is
Correct Answer
Structure does not support OOPS Class Supports OOPS.
Your Answer
Structure does not support OOPS Class Supports OOPS.

Multiple Choice Multiple Answer
Question
Find out the basic I/O hardware elements from the following :-
Correct Answer
Ports , Buses , Device controllers
Your Answer
Ports , Buses , Device controllers

Multiple Choice Single Answer
Question
The interval from the time of submission of a process to the time of completion is :-
Correct Answer
Turnaround time
Your Answer
Completion time

True/False
Question
In Public Key Encryption, each user has both a public and a private key.
Correct Answer
True
Your Answer
False

Multiple Choice Single Answer
Question
If the process is waiting to be assigned to CPU then it is said to be in :-
Correct Answer
Ready state
Your Answer
Waiting state

Select The Blank
Question
A ________ controller is built into each disk drive.
Correct Answer
Disk
Your Answer
Disk

Multiple Choice Multiple Answer
Question
Linux presents standard interfaces to whom?
Correct Answer
Programmer , User
Your Answer
Programmer , User , System administrator

True/False
Question
As an object-oriented systems NT uses objects for all its services and entities.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
A procedure body implementing an operation is termed as
Correct Answer
Method
Your Answer
Method

True/False
Question
Main Memory is a volatile storage device that loses its contents when power is turned off.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Once the I/O is started , which two courses of action are possible?
Correct Answer
Synchronous I/O , Asynchronous I/O , Simple I/O
Your Answer
Waiting I/O , Simple I/O

Select The Blank
Question
________ passwords prevent improper authentication due to password exposure.
Correct Answer
One-time
Your Answer
Encrypted