MCQ's on Operating System

MCQ 1:
What is operating system?

The collection of programs that manages hardware resources
System service provider to the application programs
Link to interface the hardware and application programs
All of the above

MCQ 2:
To access the services of operating system, the interface is provided by the

System calls
API
Library
Assembly instructions

MCQ 3:
Which one of the following is not true?

Kernel is the program that constitutes the central core of the operating system.
Kernel is the first part of operating system to load into memory during booting.
Kernel is made of various modules which can not be loaded in running operating system.
Kernel remains in the memory during the entire computer session.

MCQ 4:
Which one of the following error will be handle by the operating system?

Power failure
Lack of paper in printer
Connection failure in the network
All of the above

MCQ 5:
What is the main function of the command interpreter?

To get and execute the next user-specified command
To provide the interface between the API and application program
To handle the files in operating system
None of the above

MCQ 6:
By operating system, the resource management can be done via __________.

time division multiplexing
space division multiplexing
time and space division multiplexing
None of the above

MCQ 7:
If a process fails, most operating system write the error information to a _____________.

log file
another running process
new file
None of the above

MCQ 8:
Which facility dynamically adds probes to a running system, both in user processes and in the kernel?

DTrace
DLocate
DMap
DAdd

MCQ 9:
Which one of the following is not a real time operating system?

Vx Works
Windows CE
RTLinux
Palm OS

MCQ 10:
The OS X has ____________.

monolithic kernel
hybrid kernel
microkernel
monolithic kernel with modules

MCQ 11:
In operating system, each process has its own _____________.

address space and global variables
open files
pending alarms, signals and signal handlers
All of the above

MCQ 12:
In Unix, Which system call creates the new process?

Fork
Create
New
None of the above

MCQ 13:
A process can be terminated due to ____________.

normal exit
fatal error
killed by another process
All of the above

MCQ 14:
What is the ready state of a process?

When process is scheduled to run after some execution.
When process is unable to run until some task has been completed.
When process is using the CPU.
None of the above

MCQ 15:
What is interprocess communication?

Communication within the process
Communication between two process
Communication between two threads of same process
None of the above

MCQ 16:
A set of processes is deadlock if ____________.

each process is blocked and will remain so forever
each process is terminated
all processes are trying to kill each other
None of the above

MCQ 17:
A process stack does not contain _____________.

Function parameters
Local variables
Return addresses
PID of child process

MCQ 18:
Which system call returns the process identifier of a terminated child?

wait
exit
fork
get

MCQ 19:
The address of the next instruction to be executed by the current process is provided by the __________

CPU registers
Program counter
Process stack
Pipe

MCQ 20:
A Process Control Block(PCB) does not contain which of the following?

Code
Stack
Bootstrap program
Data

MCQ 21:
The number of processes completed per unit time is known as __________.

Output
Throughput
Efficiency
Capacity

MCQ 22:
The state of a process is defined by __________.

the final activity of the process
the activity just executed by the process
the activity to next be executed by the process
the current activity of the process

MCQ 23:
Which of the following is not the state of a process?

New
Old
Waiting
Running

MCQ 24:
What is a Process Control Block?

Process type variable
Data Structure
A secondary storage section
A Block in memory

MCQ 25:
Which of the following do not belong to queues for processes?

Job Queue
PCB queue
Device Queue
Ready Queue

MCQ 26:
What will happen when a process terminates?

It is removed from all queues
It is removed from all, but the job queue
Its process control block is de-allocated
Its process control block is never de-allocated

MCQ 27:
What is a long-term scheduler?

It selects which process has to be brought into the ready queue
It selects which process has to be executed next and allocates CPU
It selects which process to remove from memory by swapping
None of the above

MCQ 28:
What is a medium-term scheduler?

It selects which process has to be brought into the ready queue
It selects which process has to be executed next and allocates CPU
It selects which process to remove from memory by swapping
None of the above

MCQ 29:
What is a short-term scheduler?

It selects which process has to be brought into the ready queue
It selects which process has to be executed next and allocates CPU
It selects which process to remove from memory by swapping
None of the above

MCQ 30:
The only state transition that is initiated by the user process itself is ____________.

block
wakeup
dispatch
None of the above

MCQ 31:
Which of the following does not interrupt a running process?

A device
Timer
Scheduler process
Power failure

MCQ 32:
In UNIX, each process is identified by its __________.

Process Control Block
Device Queue
Process Identifier
None of the above

MCQ 33:
The child process can __________.

be a duplicate of the parent process
never be a duplicate of the parent process
cannot have another program loaded into it
never have another program loaded into it

MCQ 34:
Which module gives control of the CPU to the process selected by the short-term scheduler?

Dispatcher
Interrupt
Scheduler
None of the above

MCQ 35:
What is a reusable resource?

That can be used by one process at a time and is not depleted by that use
That can be used by more than one process at a time
That can be shared between various threads
None of the above

MCQ 36:
Which of the following condition is required for a deadlock to be possible?

Mutual exclusion
A process may hold allocated resources while awaiting assignment of other resources
No resource can be forcibly removed from a process holding it
All of the above

MCQ 37:
What is networked virtual memory?

Caching
Segmentation
RAM disk
None of the above

MCQ 38:
The ___________ must design and program the overlay structure.

programmer
system architect
system designer
None of the above

MCQ 39:
The ___________ swaps processes in and out of the memory.

Memory manager
CPU
CPU manager
User

MCQ 40:
CPU fetches the instruction from memory according to the value of ____________.

program counter
status register
instruction register
program status word

MCQ 41:
A memory buffer used to accommodate a speed differential is called ____________.

stack pointer
cache
accumulator
disk buffer

MCQ 42:
Which one of the following is the address generated by CPU?

physical address
logical address
none of the mentioned
absolute address

MCQ 43:
The address of a page table in memory is pointed by ____________.

stack pointer
page table base register
page register
program counter

MCQ 44:
Program always deals with ____________.

logical address
absolute address
physical address
relative address

MCQ 45:
The page table contains ____________.

base address of each page in physical memory
page offset
page size
None of the above

MCQ 46:
____________ is a unique tag, usually a number identifies the file within the file system.

File identifier
File name
File type
None of the above

MCQ 47:
File type can be represented by ____________.

file name
file extension
file identifier
None of the above

MCQ 48:
Which file is a sequence of bytes organized into blocks understandable by the system’s linker.

object file
source file
executable file
text file

MCQ 49:
What is the mounting of file system?

crating of a filesystem
deleting a filesystem
attaching portion of the file system into a directory structure
removing the portion of the file system into a directory structure

MCQ 50:
Mapping of file is managed by ____________.

file metadata
page table
virtual memory
file system

MCQ 51:
What are the client-side state management options that ASP.NET supports?

Application
Session
Querystring
Option a and b are correct

MCQ 52:
Which ADO.NET class provide Connected Environment?

DataReader
DataSet
Command
None of the above

MCQ 53:
In ASP.NET application DLL files are stored in which folder?

App_Code
App_Data
Bin
App_LocalResources

MCQ 54:
Which protocol is used for requesting a web page in ASP.NET from the Web Server?

HTTP
TCP
SMTP
None of the above