Operating Systems & Utility Programs

An Introduction

1. Operating
Systems and Utility Programs
Lecture 1
Inam Ul Haq
Subject: System Administration
Class: BSIT – 3
rd
University of Education Okara Campus
[email protected], [email protected]
1

2. Objectives
Identify the types of system software

Explain the purpose of the utilities
included with most operating systems

Summarize the features of several
stand-alone operating systems

Identify devices that use
embedded operating systems

Explain the purpose of several
stand-alone utility programs
Describe the functions of an operating system
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3. System Software
What is system software?
Operating system (OS)Operating system (OS)
(sometimes called the platform) (sometimes called the platform)
coordinates all activities coordinates all activities
among computer among computer
hardware hardware
resourcesresources
Programs that Programs that
control or maintaincontrol or maintain
operation of computeroperation of computer
Two types are Two types are
operating systems operating systems
and utility programsand utility programs
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4. Operating Systems
What is a cross-platform application?
Operating System/
Platform A
Operating System/
Platform B
Operating System/
Platform C
Operating System/
Platform D
Application
Runs identically on multiple operating systems
Operating system that computer uses is sometimes
called the platform
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5. Operating System Functions
What is booting?
Cold boot
Turning on
computer that has
been powered off
Warm boot
Restarting
computer that is
powered on
Process of starting or restarting a computer
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6. Operating System Functions
What is a user interface?
Controls how you enter data and instructions and how information
displays on screen
With a command-line interface, a user types commands or presses
special keys on the keyboard to enter data and instructions
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What is a graphical user interface (GUI)?
User interacts with menus
and visual images such as
buttons and other
graphical objects to issue
commands

7. Foreground contains
program you are using
Background contains
programs that are
running but are not
in use
Operating System Functions
What is single user/ multitasking?
Working on two or
more programs that
reside in memory at
same time
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8. Has duplicate
components such as
processors, memory,
and disk drives
Enables two or
more users to
run programs
simultaneously
Continues to
operate when one
of its components
fails
Operating System Functions
What are other program management features of operating systems?
Can support two
or more processors
running programs
at same time
fault-tolerant computerfault-tolerant computer
multiusermultiuser
multiprocessingmultiprocessing
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9. Operating System Functions
What is memory management?
Optimizing use of random access memory (RAM)
With virtual memory (VM), portion of hard disk is allocated to
function as RAM
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How does an operating system monitor performance?
Provides program, called performance monitor, that assesses and
reports information about
various computer resources and devices

10. Operating System Functions
How does an operating system schedule jobs?
Transferring items Transferring items
between storage between storage
and memoryand memory
Sending Sending
information information
to output deviceto output device
Processing Processing
instructionsinstructions
Receiving data Receiving data
from input devicefrom input device
Adjusts schedule
based on
job’s priority
A A jobjob is operation is operation
the processor managesthe processor manages
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11. Operating System Functions
What is spooling?
Sending print jobs to buffer instead of directly to printer
Print jobs line up in queue
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12. Operating System Functions
What is a driver?
DriverDriver
Program that Program that
tells operating system tells operating system
how to communicate how to communicate
with devicewith device
With With Plug and PlayPlug and Play, ,
operating system operating system
automatically configures automatically configures
new devices as you new devices as you
install theminstall them
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13. Operating System Functions
How do you establish an Internet connection?
Windows Vista includes
Connect to a network wizard
Guides user through setting up
connection between computer
and Internet
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14. Operating System Functions
What is a network operating system?
Allows users to share resources on a network
Administers security by establishing user name and password
for each user
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15. Operating System Utility
Programs
What is a utility program?
System software that performs maintenance-
type tasks
Also called
utility
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16. Operating System Utility
Programs
What is a file manager?
Performs functions such as formatting, copying, renaming,
deleting, and moving files
Image viewer displays contents of graphics file when you double
click on it
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What is a disk defragmenter?
Reorganizes files and unused space on hard disk so programs run
faster

17. Operating System Utility
Programs
What is a personal firewall?
Detects and protects a personal computer from unauthorized
intrusions
Windows Vista automatically enables the built-in personal
firewall upon installation
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What is a disk scanner?
Searches for and removes unnecessary files
Windows Vista includes a disk scanner utility called Disk
Cleanup

18. Operating System Utility
Programs
What is a diagnostic utility?
Compiles technical information about hardware and certain
system software
Prepares report outlining problems
What is a backup utility?
Copies selected files or entire hard disk onto another storage medium
Most compress files during backup to require less storage space
A restore program reverses the backup process and returns
backed up files to their original form
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19. Types of Operating Systems
What are three categories of operating systems?
1.Embedded OS
2.Stand-alone OS
3.Network OS
Explore yourself
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20. Stand-Alone Utility Programs
What is a file compression utility?
Shrinks size of files to free up room and improve performance
Compressed files are sometimes called zipped files
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What is a media player?
What is CD/DVD burning software?
What is a personal computer maintenance utility? [Norton]

21. Learning Assignment [4 marks]
1.Top 10 Best Features of Windows 10? [Roll No. 1001-1010]
2.Top 10 Worst Features of Windows 10? [Roll No. 1011-1020]
3.What are best utilities programs? [any 10] [Roll No. 1021-1030]
4.What are main 10 differences b/w Win7 & Win10? [1031-1040]
5.What are easy installation steps of Windows 10? [1041-1050]
6.Top 10 best PC Cleaners of the world? [1051-1060]
---------------------------------------------------
1.Getting to know about Windows Server 2012 [3001-3010]
2.How Windows Server 2012 is installed? [3011-3020]
3.Windows Server 2012 Roles? [3021-3030]
4.What is best embedded Operating System? [3031-3040]
5.Top 5 best features in Mac OS? [3041-3050]
21
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Send your assignments of one page to [email protected] till 13.9.2015 at 11:55pm
Every student should submit his own assignment, I am very strict about copy-paste.
Best assignment will get prize.

22. How to Write?
•You select a topic and visit multiple websites again and again for this topic.
•Read at least 5 related websites, magazines, newspapers and social media to get
the detail information and write yourself. Do not write unnecessary introduction of
the topic, jump to the topic.
•Assignment should be between 400-600 words or more but not less than it,
multiple paragraphs, heading and sub-heading. Please do not put your personal
links inside assignment. Always submit with your photos and a short biography
(check one assignment: http://computingcage.com/why-microsoft-provides-windows10-for-free/).
•Once you complete assignment, do Spelling & Grammar check and check
Plagiarism Checker online. Upload a screen shot of Plagiarism results in the
assignment.
•Photos are beauty of any document. I suggest photos with white background, non-
copyrighted (a company name or logo should not be over photo) and bright.22
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