CS604 – Operating System
Quiz No.1 Dated Dec 04, 2012
The process id returned to the child process after successful fork system call execution is _____________.
0
1
2
3
Shared libraries and kernel modules are stored in _____________ directory.
/bin
/dev/
/boot
/lib
___________ is a piece of code in a cooperating process in which the process may updates shared data (variable, file, database, etc.).
Critical analysis
Critical section
Critical path
Critical code
Round Robin algorithm is similar to ____________ scheduling but preemption is added to switch between processes.
Shortest job first
Shortest Remaining Time First
First Come First Server
None of these
DOS is single user operating system.
True
False
You can use the mv file1 file2 command to move ______________
File1 to file2.
File2 to file 1
This command will not work for moving
None the options is correct
A process is said to be in critical section if it executes code that manipulates shared data
True
False
When process opens its first file explicitly it will get descriptor number ______
1
2
3
4
A parent process calling_______ system call will be suspended until children process terminates
wait
Fork
Exit
Exec
_____ scheduling algorithm is sometimes called shortest remaining time first scheduling algorithm.
Non-Preemptive SJF
Priority Scheduling
Preemptive Shortest Job First
FCFS
A solution to the critical section problem must satisfy the following requirements
Progress
Mutual exclusion
Bounded Waiting
Race Condition
A major problem with priority scheduling algorithms is ______.
Deadlock
Aging
Starvation
None of the these
All threads within a process share the ________ address space.
Same
Different
__________ displays information about the top processes.
Is
Cs
top
Cd
The problem with priority scheduling algorithms is ___________
Deadlock
Starvation
Aging
Nice value
_________ scheduling algorithm can be preemptive or non-preemptive.
First Come First Serve
Shortest job First
Round Robin
Priority
The scheduling of ______ are done by the operating system.
Kernel threads
User level threads
Both kernel and user level thread
None of the give option
In Unix/ Linux, by default the standard output file is attached to the ___________
File
Screen
Printer
Scanner
POSIX is a standard developed by ANSI
IEEE
ISO
ACM
_____________ is the basis of queuing theory which is branch of mathematics used to analyze systems involving queues and servers.
Little’s Formula
Deterministic modeling
Queuing Theory
Queuing Analysis
___________ is a solution to the problem of indefinite blockage of low-priority processes.
Starvation
Deadlock
Aging
None of the these
The priority of a process can be changed using ___________ command.
nice
cmd
Cat
grep
Batch programs are usually _________ programs.
Interactive
Non-interactive
Foreground
Preemptive
A process consists of __________
One or more threads
Code
Data
All of the given
_________ is the smallest rectangle enclosing the portion of a window or client area affected by recent drawing operations
Invalid Rectangle
Accumulated Bounding Rectangle
Accumulated Client Rect
All of the given options
What kind of messages can be display using messagebox function?
Long messages
Short messages
Null value
None othe given
_______ acts as a buffer between applications and output devices.
GDI
Kernal32
OS
CPU
On which machines the scheduler can move individual threads to different processors to “balance” the CPU load.
Miniprocessor
Multiprocessor
Doubleprocessor
None of given options
The window ______ is the color or pattern used to fill the client area before a window begins drawing
Caption
Color palette
Background
Foreground
___________ is used to check the predefined identifiers.
#include
#ifdef
#def
#elif
_________ is/are Pre-defined GDI object(s) in Windows.
Pens
Brushes
Fonts
All of the given options
If a window owns child Windows, and we destroy owner Window then _____________.
Only owner window will be destroyed
Only its owned window will be destroyed
Both owner and owned Windows will be destroyed
The application will be crashed
command displays the contents of current working directory.
Is
Cs
Mv
______________ is used to request the OS by the process to take an I/O or initiating child process.
System Call
Interrupt
Trap
Singal
Linux uses ___________ directory to store system configuration files.
/bin
/dev
/boot
/etc
__________ commands in Linux is used to copy file
is
cp
mv
mkdir
User mode can run the Privileged instructions.
1
0
A parent process calling __________ system call will be suspended until children process terminates. ht
wait
fork
exit
exec
If your processor does not have two slots empty in Per Process File Descriptor Table, then your _________ system call will fail.
pipe
read
write
open
The manual pages can be read in Linux using ____ command.
man
wan
desc
help
__________ directory includes essential system boot files including the kernel image.
/bin
/dev
/boot
/etc
Swapper is also termed as Short term scheduler.
1
0
First _______ entries in Per Process File Descriptor Table are used as soon as the process is created.
1
2
3
4
The number of processes completed per unit time is called ___________.
Turn around time
Throughput
Response time
Dispatch latency
Command-line interpreter is also called __________ in some operating systems.
kernal wrong
shell
signal
api
__________ displays information about the top processes.
is
cs
top
cd
/usr/X11R6 is used by the X Window System.
True
False
/opt is used for storage of large applications.
True
False
____ is a virtual directory in Linux and Unix.
/proc
/temp
/ver
/boot
The Home Directory for superuser in Linux and Unix is
/
/home
/root
None of the given
Linux Treats Devices as Files.
True
False
~/vusr/CS604 is an example of _________ pathname.
Absolute
Relative
usr/include/sys/vusr.h is an example of _______ path
Absolute
Relative
An absolute pathname starts with the root directory (/) and a relative pathname starts with your home directory.
True
False
A pathname is the list of directories separated by _________.
#
$
&
/
________ determines What will be done.
Mechanism
Policy
Mechanism and Policy
None of the given
_____________ determines How to do something.
Mechanism
Policy
Mechanism and Policy:
None of the given
User Goal of OS is that It easy to use, reliable, safe and fast.
True
False
We can install and run multiple OS by using VMWare.
True
False
Mach, MacOS X Server, QNX, OS/2 and Windows NT are examples of OS Based on ______.
Layered
Micro Kernal
Virtual Machine
None of The Given
In Layered Approach of OS, the Layer highest Layer is User Interface layer.
True
False
In Layered approach of OS, Lowest Layer is known as ________.
Software Layer
Hardware Layer
Lower Level Layer
None of The Given
Operating System is the Manager of Hardware Resources.
True
False
An operating system is a control program that manages the execution of user programs to prevent errors and improper use of a computer.
True
False
The bottom-up view is that operating system is a resource manager who manages the hardware and software resources in the computer system.
True
False
In Top-down OS, user simply give a Command and reset is done by the OS.
True
False
copy file1 file2 is an example of ______ OS view.
Top down
Bottum Up
The Top-down view is that it is a program that acts as an intermediary between a user of a computer and the computer hardware, and makes the computer system convenient to use.
True
False
Managing Secondary Storage Involves all of the Following except
Allocating storage space
Deallocating Storage
Prevent Overwritting
Insure integrity of shared data
Operating System provides services such as Managing Primary and Secondary Storage, Processes and Allowing user to manage his/her files and directories.
True
False
The Purpose of Operating System is to generate Executable Programs and to _______ them.
Regenetrate
Execute
Store
Remove
Users are the People, machines or computers that uses the Hardware resources.
True
False
Database, Complier, Video games are examples of ________.
Hardware
Application
Operating System
Users
Application Programs are methods that enable the use of Hardware resources to solve the user's Problem.
True
False
Which of the Following is not an Operating System.
Linux
Unix
Windows Xp
Datebase
Operating system enables the user to use the Hardware Resources.
True
False
Which of the following is NOT a Hardware Resource.
CPU
OS
I/O Devices
Memory
Hardware provide basic computing resource.
True
False
__________ scheduler selects the process from the job pool and put them in main memory.
Select correct option:
Long term
Short term
Medium term
Swapper
_____________ is a preemptive scheduling algorithm.
Select correct option:
First Come First Serve
Shortest Job First
Round Robin
None of these
The priorities of processes in the __________ group remain fixed.
Select correct option:
Kernel
User
Taking the CPU from one process and giving the CPU to another process is termed as
Select correct option:
Context Switching
Dispatching
Swapping
Tracking
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