Operating System - 7

LIST OF ATTEMPTED QUESTIONS AND ANSWERS

Multiple Choice Multiple Answer
Question
A mailbox can be owned by :-
Correct Answer
Operating system , Process
Your Answer
User , Process

Multiple Choice Single Answer
Question
Software may trigger an interrupt by executing a special operation called :-
Correct Answer
System call
Your Answer
Interrupt call

Match The Following
Question
Correct Answer
Your Answer
User mode
Mode bit 1
Monitor mode
Serial port
Modem
Modem
Parallel port
Printer
Printer
Privileged instructions
Monitor mode
UPS

Multiple Choice Multiple Answer
Question
The movement of information between levels of a storage hierarchy may be of two types depending on the hardware design and the controlling operating system software such as :-
Correct Answer
Explicit , Implicit
Your Answer
Implicit , Indirect

Multiple Choice Multiple Answer
Question
What are the ways in which a request for kernel-mode execution can occur in Linux?
Correct Answer
Explicitly , Implicitly
Your Answer
Implicitly , Function call

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

Multiple Choice Multiple Answer
Question
The role of the operating system in computer I/O is to :-
Correct Answer
Manage I/O operation and devices , Control I/O operation and devices
Your Answer
Manage I/O operation and devices , I/O processing

True/False
Question
In UNIX, first two names in every directory are "." and ".."
Correct Answer
True
Your Answer
False

Multiple Choice Multiple Answer
Question
Various storage systems available possesses which two characteristics?
Correct Answer
Volatile , Non-volatile
Your Answer
Primary storage , Secondary storage

Multiple Choice Single Answer
Question
A program in execution is:-
Correct Answer
Process
Your Answer
Operation

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

Select The Blank
Question
The hardware to measure elapsed time to trigger operations is called a ________.
Correct Answer
Programmable interval timer
Your Answer
Elapsed timer

True/False
Question
NFU algorithm requires a software counter associated with each page initially zero.
Correct Answer
True
Your Answer
True

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

Match The Following
Question
Correct Answer
Your Answer
MFT
Multi programming with fixed task
Multi programming with fixed task
RAM
Volatile memory
Volatile memory
ROM
Read only memory
Read only memory
BIOS
Basic input output system
Basic input output system

Select The Blank
Question
________ includes disks and tapes.
Correct Answer
Block devices
Your Answer
Socket interfaces

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

True/False
Question
The cipher text can be stored in a readable file or transmitted over unprotected channels.
Correct Answer
True
Your Answer
True

Select The Blank
Question
The virtual memory portion of the NT executive is the ________.
Correct Answer
Virtual memory manager
Your Answer
Page-memory manager

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 is used in OOPS. Classes are used in procedural programs.

Multiple Choice Multiple Answer
Question
Find out different types of I/O buses :-
Correct Answer
EIDE , SCSI
Your Answer
EIDE , SCSI

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

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
Trojan horses

Select The Blank
Question
A ________ in NT is an object that provides a uniform interface for files, whether they are local or remote.
Correct Answer
Redirector
Your Answer
Director

Select The Blank
Question
One interface that is available in many operating systems, including UNIX and WindowsNT, is the network ________ interface.
Correct Answer
Socket
Your Answer
Device

True/False
Question
In Windows NT, kernel can be paged out of memory and its executions can be preempted.
Correct Answer
False
Your Answer
True

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

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

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

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
The system call checks the arguments given by the application, builds a data structure to convey the arguments to the kernel and then executes a special instruction called as :-
Correct Answer
Software interrupt
Your Answer
Special system call

Multiple Choice Multiple Answer
Question
Security violations of the system can be categorized as :-
Correct Answer
Malicious , Accidental
Your Answer
Unauthorized , Authorized

Select The Blank
Question
Most computers have ________ clocks and timers.
Correct Answer
Hardware
Your Answer
In-built

Multiple Choice Single Answer
Question
A domain is a collection of :-
Correct Answer
Access rights
Your Answer
Objects

True/False
Question
In paging the total address space can exceed the size of physical memory
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
Objects may communicate with each other through
Correct Answer
Methods
Your Answer
Methods

Multiple Choice Single Answer
Question
A system consists of collection of :-
Correct Answer
Processes
Your Answer
Processes

Multiple Choice Multiple Answer
Question
An audit log records which things about an object ?
Correct Answer
Time , User , Type of access
Your Answer
Time , Type of access

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

Select The Blank
Question
OOSAD begins with identification of actors, what activities they perform and building ________ model for the function.
Correct Answer
Use-case
Your Answer
Use-case

Multiple Choice Single Answer
Question
The smallest addressable portion of a disk is :-
Correct Answer
Sector
Your Answer
Sector

True/False
Question
OOSAD approach is applicable only to stable systems.
Correct Answer
False
Your Answer
True

True/False
Question
To perform a disk I/O operation, the computer places a command into the host controller, typically using memory-mapped I/O ports.
Correct Answer
True
Your Answer
True

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
Efficiency of system

Multiple Choice Single Answer
Question
In MULTICS TLB address of 'n', the most recently referenced pages are kept, where 'n' can have a value :-
Correct Answer
16
Your Answer
8

True/False
Question
The job of I/O channel is to offload I/O work from the main CPU.
Correct Answer
True
Your Answer
False