Operating System - 15

LIST OF ATTEMPTED QUESTIONS AND ANSWERS

Multiple Choice Single Answer
Question
SCSI stands for :-
Correct Answer
Small Computer-Systems Interface
Your Answer
Small Computer-Systems Interface

Multiple Choice Multiple Answer
Question
The basic hardware elements involved in I/O are :-
Correct Answer
Buses , Device controllers , Device
Your Answer
Buses , Device controllers , Device

True/False
Question
A file in NTFS is a simple byte stream as it is in MS-DOS or UNIX .
Correct Answer
False
Your Answer
False

True/False
Question
C++ supports object oriented programming concepts of objects, classes, inheritance, polymorphism and parameterised datatypes.
Correct Answer
True
Your Answer
True

True/False
Question
I/O system calls are costly in terms of CPU consumptions.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
All user processes are descendents of one original process, Which is that process?
Correct Answer
Init process
Your Answer
Init process

Match The Following
Question
Correct Answer
Your Answer
Provides adjustment while compiling classes
Interface classes
Derived function
Identify values & relevant operations
Abstract data types
Abstract data types
Complete implementation of class
Concrete data types
Interface classes
Provides framework for other classes
Node classes
Node classes

Match The Following
Question
Correct Answer
Your Answer
Round-robin
Time quantum
Time quantum
First-come First-served
First come job
First come job
Shortest job
Shortest job
Shortest job
Priority
Highest priority job
Highest priority job

Select The Blank
Question
________ describes segments local to each program, including its code, data, stack etc.
Correct Answer
LDT
Your Answer
LDT

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
Physical level , Human level

True/False
Question
The hardware allows privileged instructions to be executed in only user mode.
Correct Answer
False
Your Answer
False

Multiple Choice Single Answer
Question
What does the rows of the access matrix represents?
Correct Answer
Domains
Your Answer
Domains

Select The Blank
Question
A bit called the ________ , is added to the hardware of the computer to indicate the current mode.
Correct Answer
Mode bit
Your Answer
Mode bit

True/False
Question
In Windows NT, each process has one or more threads, which are the units of execution dispatched by the kernel.
Correct Answer
True
Your Answer
True

Select The Blank
Question
________allows us to define abstract operations on abstract data.
Correct Answer
Data abstraction
Your Answer
Data abstraction

Select The Blank
Question
If the granularity field is ________ the limit field is the exact segment size, upto 1 MB.
Correct Answer
0
Your Answer
1

True/False
Question
Encryption is one common method of protecting information that is transmitted over unreliable links.
Correct Answer
True
Your Answer
True

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

Multiple Choice Single Answer
Question
A Process which produces process is known as :-
Correct Answer
Producer
Your Answer
Producer

Multiple Choice Single Answer
Question
Interrupt mechanism accepts an address and this address is an offset in a table called the :-
Correct Answer
Interrupt vector
Your Answer
Interrupt vector

Select The Blank
Question
The process could create a new ________ and wait for its termination.
Correct Answer
Sub process
Your Answer
Sub process

Multiple Choice Single Answer
Question
Thread at user level is known as :-
Correct Answer
User thread
Your Answer
User thread

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
Mammal inherits Animal's functions and data

Select The Blank
Question
During execution, ________ register holds the sector for the code segment.
Correct Answer
CS
Your Answer
DS

Multiple Choice Single Answer
Question
The list of processes waiting for a particular I/O device is called a :-
Correct Answer
Device queue
Your Answer
Device queue

True/False
Question
Cache is a faster storage system which stores data temporarily.
Correct Answer
True
Your Answer
True

True/False
Question
The file system does not provide a degree of protection.
Correct Answer
False
Your Answer
True

Multiple Choice Multiple Answer
Question
Liner address is divided into fields like :-
Correct Answer
Dir , Page , Offset
Your Answer
Dir , Page , Offset

True/False
Question
Volatile storage loses its contents when the power to the device is removed.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
Which of the following Operating System has no memory protection ?
Correct Answer
Windows 3.1
Your Answer
Windows 3.1

Multiple Choice Multiple Answer
Question
In windows NT, naming of objects is of two types :-
Correct Answer
Permanent name , Temporary name
Your Answer
Permanent name , Temporary name

Multiple Choice Single Answer
Question
Protection can no longer be considered solely as a matter of concern to the designer of :-
Correct Answer
Operating system
Your Answer
Operating system

Select The Blank
Question
Web servers use the ________ protocol to communicate with web browsers.
Correct Answer
http
Your Answer
http

Multiple Choice Multiple Answer
Question
locate the transmission devices :-
Correct Answer
Network cards , Modems
Your Answer
Network cards , Modems

Multiple Choice Single Answer
Question
In UNIX, the simplest form of communication between processes is by :-
Correct Answer
Pipes
Your Answer
Pipes

Select The Blank
Question
A ________ is a group of NT server machines that share a common security policy and user databases.
Correct Answer
Domain
Your Answer
Domain

Multiple Choice Multiple Answer
Question
Message passing may be :-
Correct Answer
Blocking , Non-blocking
Your Answer
Blocking , Non-blocking

Multiple Choice Multiple Answer
Question
An object type in windows NT is a system defined data type that has two things associated with it, which are they?
Correct Answer
Set of attributes , Set of methods
Your Answer
Set of attributes , Set of methods

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

Select The Blank
Question
The Linux ________ file system, known as the proc file system, is an example of a file system whose contents are not actually stored anywhere, but are rather computed on demand according to user file I/o requests.
Correct Answer
Process
Your Answer
Process

True/False
Question
Objects can be both, tangible or intangible.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
In UNIX, a device is distinguished by two things, which are :-
Correct Answer
Device-class , Device number
Your Answer
Device-class , Device number

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 Multiple Answer
Question
Which are the Division D security systems ?
Correct Answer
Windows 3.1 , MS-DOS
Your Answer
Windows 3.1 , MS-DOS

Multiple Choice Single Answer
Question
Protection can improve :-
Correct Answer
Reliability
Your Answer
Reliability

Select The Blank
Question
The creating process is called a ________ process.
Correct Answer
Parent
Your Answer
Parent

Multiple Choice Multiple Answer
Question
When memory reference occurs in MULTICS the things which takes place are :-
Correct Answer
Segment number is used to find segment descriptor , Check is made to see if segment's page table is in memory , Page table entry for requested virtual page is examined , Offset is added to the page origin to give main memory address
Your Answer
Segment number is used to find segment descriptor , Check is made to see if segment's page table is in memory , Page table entry for requested virtual page is examined , Offset is added to the page origin to give main memory address