PRINCESS NOURA BINT ABDUL RAHMAN UNIVERSITY
PREPARATORY YEAR
FIRSTSEMESTER (2013 – 2014 / 1434– 1435)
Computer skills (CMP-001)
MODULE :1
Information
Technology
Prepared by:
Reviewed and Approved by:
Ms. SalehaZiauddin
Ms. LamisHezbawi
Ms. Mazna Khan
Ms. AzraJabeen
Terminology translation by:
(Director of IT Department)
Ms. AbeerHelwa
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TABLE OF CONTENTS
VOCABULARY .............................................................................................................................................................. 4
BASIC CONCEPTS ........................................................................................................................................................ 7
COMPUTER ....................................................................................................................................................................................... 7
DATA................................................................................................................................................................................................. 7
INFORMATION ................................................................................................................................................................................. 7
INFORMATION TECHNOLOGY ........................................................................................................................................................ 7
ADVANTAGES OF COMPUTERS ...................................................................................................................................................... 7
COMPUTER GENERATIONS ..................................................................................................................................... 8
FIRST GENERATION COMPUTERS................................................................................................................................................. 8
SECOND GENERATION COMPUTERS............................................................................................................................................. 8
THIRD GENERATION COMPUTERS ............................................................................................................................................... 9
FOURTH GENERATION COMPUTERS ............................................................................................................................................ 9
TYPES OF COMPUTERS ......................................................................................................................................... 10
SUPER COMPUTER ....................................................................................................................................................................... 10
MAINFRAME COMPUTER ............................................................................................................................................................ 10
MINI COMPUTER .......................................................................................................................................................................... 10
MICRO COMPUTER ...................................................................................................................................................................... 10
WORKSTATION COMPUTER ....................................................................................................................................................... 10
CONTROL COMPUTER.................................................................................................................................................................. 10
PARTS OF A PERSONAL COMPUTER ................................................................................................................ 10
HARDWARE................................................................................................................................................................................... 11
Input Devices ........................................................................................................................................................................ 11
Output Devices ..................................................................................................................................................................... 11
Central Processing Unit ................................................................................................................................................... 12
Memory Unit ......................................................................................................................................................................... 12
Storage Devices ................................................................................................................................................................... 12
DISK AND MEMORY CAPACITY.................................................................................................................................................. 13
COMPUTER PERFORMANCE........................................................................................................................................................ 13
SOFTWARE .................................................................................................................................................................................... 14
Operating System ............................................................................................................................................................... 14
Functions of Operating System ..................................................................................................................................... 15
Application Software ........................................................................................................................................................ 15
NETWORKS ............................................................................................................................................................... 16
MAIN PARTS OF NETWORK........................................................................................................................................................ 16
ADVANTAGES OF NETWORKS .................................................................................................................................................... 16
TYPES OF NETWORK ................................................................................................................................................................... 16
LAN .......................................................................................................................................................................................... 17
WAN......................................................................................................................................................................................... 17
Internet, Intranet, Extranet............................................................................................................................................ 17
TRANSFER RATE .......................................................................................................................................................................... 18
INTERNET .................................................................................................................................................................. 18
WORLD WIDE WEB .................................................................................................................................................................... 18
INTERNET SERVICE PROVIDER .................................................................................................................................................. 18
UNIFORM RESOURCE LOCATOR................................................................................................................................................. 18
WEB BROWSER ............................................................................................................................................................................ 18
WEBSITE ....................................................................................................................................................................................... 19
HOMEPAGE ................................................................................................................................................................................... 19
SEARCH ENGINES ......................................................................................................................................................................... 19
DOWNLOADING ............................................................................................................................................................................ 19
UPLOADING................................................................................................................................................................................... 19
COOKIE .......................................................................................................................................................................................... 19
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FIELDS OF USING IT IN OUR DAILY LIFE ......................................................................................................... 20
COMPUTERS IN EDUCATION ...................................................................................................................................................... 20
COMPUTERS IN MANAGEMENT ................................................................................................................................................. 20
COMPUTER IN BANKS ................................................................................................................................................................. 20
COMPUTERS IN MEDICAL FIELDS ............................................................................................................................................. 20
COMPUTER IN PHARMACY ......................................................................................................................................................... 20
COMPUTER IN INDUSTRY FIELD ................................................................................................................................................ 20
Artificial Intelligence ........................................................................................................................................................ 20
CONCEPTS OF INFORMATION ............................................................................................................................ 20
TELE-WORKING........................................................................................................................................................................... 20
Advantages ........................................................................................................................................................................... 20
Disadvantages ..................................................................................................................................................................... 20
E-DOCUMENTS............................................................................................................................................................................. 21
Advantages ........................................................................................................................................................................... 21
E-COMMERCE ............................................................................................................................................................................... 21
Advantages ........................................................................................................................................................................... 21
Disadvantages ..................................................................................................................................................................... 21
SAFETY AND HEALTH ............................................................................................................................................ 21
RIGHTS METHODS TO DEAL WITH THE COMPUTER ............................................................................................................ 21
HEALTH PROBLEMS CAUSED BY WRONG USE OF COMPUTERS .......................................................................................... 22
INFORMATION TECHNOLOGY PROTECTION ................................................................................................ 22
INFORMATION SECURITY............................................................................................................................................................ 22
ENCRYPTION ................................................................................................................................................................................. 22
VIRUS........................................................................................................................................................................... 22
VIRUS SPREADING WAYS ........................................................................................................................................................... 22
VIRUS PROTECTION WAYS......................................................................................................................................................... 22
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Vocabulary
‫أجيال الحاسب‬
‫األنابيب المفرغة‬
‫الدوائر المتكاملة‬
‫رقائق السليكون‬
‫معالجة‬
‫العمليات المنطقية‬
‫معلومات‬
‫بيانات‬
‫السرعة والدقة‬
‫الوحدات المادية‬
‫أجهزة االدخال‬
‫لوحة المفاتيح‬
‫الفأرة‬
‫الماسح الضــوئي‬
‫قارئ شريط الشيفرات‬
‫عصا التحكم‬
‫أجهزة االخراج‬
‫الشــاشة‬
‫الطابعة الليزرية‬
‫الطابعة الحبرية‬
‫السماعات‬
‫نص‬
‫الصور‬
‫الصوت‬
‫دقة الشاشة‬
‫لوحة اللمس‬
‫وحدة المعالجة المركزية‬
‫وحدة الذاكرة‬
‫ذاكــرة الوصول العشوائي‬
‫ذاكــرة القراءة فقط‬
‫الذاكرة المؤقتة‬
‫الذاكرة الدائمة‬
‫متطايرة – غير متطايرة‬
‫أجهزة التخزين‬
‫وحدات التخزين الداخلية‬
‫وحدات التخزين الخارجية‬
Computer Generations
Vacuum Tubes
Integrated Circuits
Silicon chips
Process
logical operations
Information
Data
Speed and accurate
Hardware
Input devices
Keyboard
The Mouse
Scanner
Barcode Reader
Joystick
Output devices
Monitor (Computer Screen )
Laser Printer
Ink-jet Printer
Speaker/Head phones
Text
pictures
Voice
Resolution
Touch Screen
Central Processing Unit
Memory unit
Random Access Memory
Read Only Memory
Temporarymemory
Permanentmemory
Volatile–non Volatile
Storage Device
Internal Unit
External Unit
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Hard Disk
Floppy Disk
CD –Compact Disk
Software
Operating System
ApplicationSoftware
Graphical User Interface
Command Line Interface
Verify
charts
Database
Design
animated pictures
Network
share resources
Local Area Network
Wide Area Network
Client
Server
Resources
Cables
Network Cards
MIS (Management Information System)
CML (Computer Managed Learning)
CAL (Computer Aided Learning)
Reducing
Financial transactions
Industry Field
Medical Fields
Artificial Intelligence
Packing
Welding and plumbing
Fire fighting
Defusing bombs
E-Commerce
Risks
Teleworking
Adjust
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‫القرص الصلب‬
‫األقراص المرنة‬
‫القرص المضغوط‬
‫البرمجيات‬
‫نظام التشغيل‬
‫البرمجيات التطبيقية‬
‫واجهة المستخدم الرسومية‬
‫واجهة األوامر المكتوبة‬
‫التحقق‬
‫الرسوم البيانية‬
‫قواعد البيانات‬
‫تصميم‬
‫الصور المتحركة‬
‫الشبكات‬
‫مشاركة المصادر‬
‫الشبكات المحلية‬
‫الشبكات الموسعة‬
‫العميل‬
‫الخـــادم‬
‫المصادر‬
‫األســالك‬
‫كرت الشبكــة‬
‫نظم إدارة المعلومات‬
‫ادراة التعليم بواسطة الكومبيوتر‬
‫التعلم بمساعدة الكمبيوتر‬
‫التقليل‬
‫المعامــالت المالية‬
‫الحقل الصناعي‬
‫الحقل الطبي‬
‫الذكــــــــاء االصطناعي‬
‫التعليب‬
‫السباكة والتلحيم‬
‫اطفاء الحرائق‬
‫نزع فتيل القنابل‬
‫التجارة االلكترونية‬
‫المخــاطر‬
‫العمل عــن بعد‬
‫ضبط‬
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‫اضاءة الشاشة‬
‫اشعاعات‬
‫تحمــيل – تنزيل‬
‫ اعتماد‬-‫اتخاذ‬
‫بصمة اليد‬
‫بصمة العين‬
‫بصمة الصوت‬
‫االحتيال‬
‫حقوق األفراد‬
‫الخصوصية‬
‫القضايا المدنية‬
‫تهدد‬
‫تشفير البيانات‬
‫مصدر غير موثوق‬
screen lights brightness
radiation
Download
Adopt
fingerprint
eye print
voice print
Fraud
Individuals rights
Privacy
civil cases
threaten
Data Encryption
unreliable source
World Wide Web
ISP (Internet Service Provider)
Web Browser
Website
Web Page
Home Page
Search Engine
Downloading
Uploading
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‫الشبكة العنكوبتية العالمية‬
‫مزود خدمة االنترنت‬
‫مستعرض االنترنت‬
‫موقع انترنت‬
‫صفحة انترنت‬
‫الصفحة الرئيسية‬
‫محرك بحث‬
‫تنزيل‬
‫رفع‬
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BASIC CONCEPTS
Computer:
A computer is an electronic machine that receives input, stores and automatically processes
data, and provides output in a useful format.
Data:
Data is raw & unorganized facts and figures that need to be processed.
Information:
When data is processed and organized so as to make it useful and meaningful, it is called
Information.
Information Technology
A term that refers to both the hardware and software that is used to store, retrieve and
manipulate information.
Advantages of computers:
o
o
o
o
Speed and accuracy of calculations and processing.
Saves huge amounts of data.
Economic in cost and time.
Network communications.
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COMPUTER GENERATIONS
The present computer system that we see today has evolved through various development
stages. These stages are illustrated below:
First generation computers (Vacuum tubes):
o
o
o
o
They relied on the machine language to perform operations.
They were huge in size.
They had very low processing speed.
They were very expensive.
Second generation computers (Transistors):
o The transistors replaced vacuum tubes.
o They were smaller, faster, and cheaper than the first generation computers.
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Third Generation (Integrated Circuits):
o The Integrated Circuits replaced the
transistors in the third generation.
o The Integrated circuits increased the speed and efficiency of the computer.
Fourth Generation computers (Present Microprocessor):
o The present microprocessor chip is the most powerful till date.
o These computers can be linked together to form networks.
o These computers are the fastest and the most efficient.
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TYPES OF COMPUTERS
Super computer:
o They are the biggest and the most powerful computers.
o They are rare because of their cost and size.
o Used by companies like NASA.
Mainframe computers:
o Great processing speed and data storage.
o Often connected to many individual PCs with limited processing capabilities called
dumb terminals.
o Used in Banks, Airlines etc.
Minicomputers:
o These computers minimized in size and power.
o They are not used very commonly these days.
Microcomputer:
o It is called the personal computer (PC) which is popular everywhere.
o It is small enough to fit on top of a desk, which can be used by one user at a time.
o Used in homes, schools etc.
Workstation Computer:
o A workstation is a high-end microcomputer used in engineering applications.
o Intended primarily to be used by one person at a time, they are commonly connected to
a local area network.
o The term workstation has also been used to refer to a PC connected to a network.
Control Computer:
These computers are used for controlling operations in industrial, medical devices and travel
media like planes and cars, to alert in any dangerous case.
PARTS OF A PERSONAL COMPUTER
A Personal Computer is broadly categorized into two parts – Hardware and Software. These
will be illustrated in detail as follows:
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HARDWARE
The physical parts of a computer which you can see and touch are called Hardware. Hardware
is classified further into the following:
1. Input devices
Devices used to translate data into a form that the computer can process are called Input
devices. Some examples of input devices are as follows:
Keyboard: It is a board containing the keys of letters, numbers and some functions which
allows you to type information into the computer.
Mouse: A small hand-held device used to point, select, click on items and to drag and drop
items from one place to another.
Scanner:It allows you to scan pictures, text and images and save it to your computer in a
digital form.
Bar Code Reader:It is a photoelectric scanner that translates the bar code symbols into digital
form.
Joystick:Small hand lever that can be moved in any directions to control movement on the
screen. It can be used for playing games.
2. Output devices:
Devices used to translate the processed information into a form that humans can
understand.Some examples of output devices are as follows:
Monitor (Computer Screen):Monitordisplays the output in terms of text, information or
pictures. They come in different sizes and resolution.
Printer:A printer produces a hard copy of the material you are working on. For example, Laser
Printer and Ink-jet Printer.
Plotters: They are similar to printers but allow you to print larger images.
Speaker/Headphones:Theyare used to output voice from a computer.
Touch Screen:It can be used as both Input and output device at the same time.It receives input
from the touch of a finger. For example - smart phones, ATM machines etc.
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3. Central Processing Unit (CPU):
It is the most important part of a computer system. It is usually referred to as the brain of a
computer. It determines the speed of your computer, which is measured in GHz (Giga
Hertz).
The two main components of CPU are:
a) CU -Control Unit:It tells the computer system how to carry out program instructions
from the memory. It controls and coordinates all activities of the computer.
b) ALU-Arithmetic and Logic Unit: It performs mathematical and logical operations.
4. Memory Unit:
Memory Types
RAM
(Random Access Memory)
ROM
(Read Only Memory)
 RAM isvolatile memory (the
information is lost when you switch
off the computer).
 This chip is where the operating
system is loaded to when you switch
on your computer.
 Used to store applications that you
are currently working with.
 It is a temporary memory
 ROM isnon-volatile (the
information is not lost when you
switch off the computer).
 This chip has special programs
which are built-in when you buy
the computer.
 Used to store control programs.
 It is a permanent memory.
Storage Devices: Hardware devices which are used to record and store data are called storage
devices. They are of two types:
1. Internal storage.
2. External storage.
Some examples of storage devices are as follows:
Internal storage:
 Hard Disk:It is the most important storage media located inside the computer, which
stores operating system and programs.
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External storage:
 Flash Memory (USB):A compact and easy-to-use device for transferring data between
computers.
 CD (Compact Disk):An optical disk which uses laser technology to read information. It
can store data up to 750 MB.
 DVD (Digital Versatile Disk):A high-density video disc that stores large amounts of
data, especially high-resolution audio-visual material like movies, encyclopedia etc. In
DVD, the capacity is up to17 GB.
Disk and memory capacity:
The smallest unit of storage is called bit.The bit is a binary numbering system which consists
of 0 or 1.
 8 bits = 1 Byte
 1024 bytes = 1 Kilo Byte (KB)
 1024 KB = 1 Mega Byte (MB)
 1024 MB = 1 Giga Byte (GB)
 1024 GB = 1 TeraByte (TB)
Computer Performance: The computer performance depends on the following:
- The speed of the processor, which is measured in Giga Hertz.
- The capacity of RAM, which is measured in Giga Bytes.
- The speed and capacity of the Hard Disk.
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SOFTWARE
Software, or programs, are instructions that tell the computer what to do and how to perform. It
is divided into two types – Operating system and Application Software.
Operating System
An interface between hardware and user, which is responsible for the management of activities
and the sharing of the resources of a computer.
It is the main software in any computer. Some examples are:
-
DOS (Disk Operating system)
Windows (98 – Me – 2000 – XP – Vista – 7)
MAC OS
UNIX
Two main types of Operating Systems:
a. CLI (Command Line Interface):A user interface in which you type commands instead of
choosing them from a menu or selecting an icon.
b. GUI (Graphical User Interface):A visual way of interacting with a computer using items
such as windows, icons, and menus. It is user-friendly.
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Functions of Operating System:
- Interface: It provides an interface between the user and the machine.
- Resource management: The resource management function of an OS allocates
computer resources such as CPU time, main memory, secondary storage, and input and
output devices for use.
- Input/output management: Thischecks the input and output of the data, their location,
storage, and retrieval.
- File management:Setting up directories to organize your files according to their type
and displaying a list of files stored ona particular disk.
Application Software:
They are programs used to perform some specific tasks. Some examples are as follows:
1. Word Processor:It is used to write and format texts, insert tables and pictures.
Eg: Microsoft Word
2. Spreadsheet: It is used for automatic calculations and creating charts.
Eg: Microsoft Excel
3. Database:A structured set of data held in a computer.
Eg: Microsoft Access
4. Presentation: It is used to design slides for business and education.
Eg: Microsoft PowerPoint
5. Web Browser: It is defined as a program designed to enable users to access, retrieve and
view documents and other resources on the Internet.Eg: Internet explorer
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File Extensions
No.
Icon
Extension
Explanation
Text Files
1
.txt
Plain text (notepad)
Image Files
1
.jpeg
High Resolution
2
.bmp
Medium Resolution
Audio Files
1
.mp3
Medium Quality- Size
2
.wav
Highest Quality- Size
Video Files
1
.avi
Highest Quality- Size
2
.wmv
Low Quality – Size
Executable Files
1
.exe
Like programs & Games
Compressed Files
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.zip
Compressed by Windows
2
.zip
Compressed by WinZip
3
.rar
Compressed By Winrar
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Microsoft Office Files
1
.xlsx
Microsoft Excel
2
.pptx
Microsoft Power point
3
.accdb
Microsoft Access
4
.docx
Microsoft Word
NETWORKS
Network:It is a set of two or more computers connected to share information and resources.
Main Parts of Network architecture:
- Client:It is a computer connected to the network and doesn’t have any control or privilege.
- Server:Itis a computer that is responsible for controlling network resources.
- Resources: All files, printers and other hardware or software that the network users can
share.
Advantages of using networks:
-
Information sharing.
Resources sharing (printers).
Software sharing
Information protection (user names and passwords)
Emails
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Types of Networks: There are mainly two types of networks – LAN and WAN.
LAN:It means Local Area Network; they are group of computers connected together in the
same region or a limited area.
WAN:Itmeans Wide Area Network; which is a network that connects computers over wide
geographical area or may be other countries using telephone lines or satellite.
INTERNET, INTRANET AND EXTRANET:
Internet (Interconnected Network):It is a global network of inter-connected networks.
Intranet (Internal Network):An Intranet is a network of computers within a private company.
It is a close version of the Internet but can only be accessed by authorized members in the same
organization.
Extranet (External Network):It is similar to an Intranet but it can be accessed by outsiders who
have the permission to access the company’snetwork.
Note:All of the above networks need a modem to work.
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Transfer Rate:The speed of modem is called Transfer rate, and is measured in bps (bits per
second). New modem speed is measured in Mbps or Gbps.
INTERNET
A system of connected computers that allows your computer to exchange data, messages and
files with any of the millions of other connected computers.
World Wide Web (WWW)
A collection of web pages and related resources which are linked together
across the internet is called World Wide Web (WWW).
Internet Service Provider (ISP):
It is a company that provides individuals and other companies access to the Internet, and other
related services such as Web site building and virtual hosting . For eg: STC, Mobily and Zain.
Uniform Resource Locator (URL)
Every page has its own unique address known as URL. The different parts of an URL are
illustrated below:
http://www.pnu.edu.sa
Country Domain
Protocol
Domain
Name
Top Level
DomainDomaDom
Web Browsers
ain
A web browser is a software application used for retrieving and presenting an URL on the
World Wide Web. Examples are:
Internet Explorer
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Mozilla Firefox
Google Chrome
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Web Site
A computer storage area that contains one or more web pages
Home Page
The first web page you see when you launch internet explorer
Search Engines
Search engines are designed to search for information on the World Wide Web.
The search results are generally presented in a list of results.
Downloading
The process of transferring a file from a network computer to your local computer is called
downloading.
Uploading
The process of transferring a file from your local computer to a network computer is called
uploading.
Cookie
A file created by an internet site to store informationon your computer.
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FIELDS OF USING COMPUTERS IN OUR DAILY LIFE
- Computers in Education:Schools have computerlabs that gives students access to
different program.
- Computers in Management: Computers increase company's performance in helping
with collecting data and producing reports.
- Computers in Banks: ease the access for bank account through ATM.
- Computers in Medical Fields:Computers help in organizing hospital files, also help in
diagnosing diseases.
- Computers in Pharmacy:Computers help in tracking pharmacy's storage system and
financial transactions.
- Computers in Industry Field:
Artificial Intelligence (AI): It is a part of Computer Science which aims to
design intelligent computer systems to help in solving problems. One of
these systems is Robot.
Robot: It is a machine created to simulate the human
being activities in a fast and organized manner. Works
that can be performed by the Robot are:
- Welding and plumbing
- Handling dangerous materials
- Defusing bombs
CONCEPTS OF INFORMATION
Tele-working:Working from home and communicating with the office by phone, fax and
computer is called Tele-working.
Advantages:
1.
2.
3.
4.
Reduced or zero commuting time
Greater ability to focus on one task
Flexible schedules
Reduced office space requirements
Disadvantages:
1. Lack of human contact and competition
2. Negative impact on teamwork
3. No Self-discipline
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E-Documents:Documentsor files which are created by the computer applications, e.g. text
documents, are referred to as e-documents.
Advantages:
1. Reduces the need for printed material (books) which reduce the cost of printing.
2. Easy to sharethese files online.
3. Easy to browse or search for a file on the computer. You can also use the search facility.
E-Commerce:Buying or selling via the internet usually using a credit card is called
E-commerce. Payment method of E-commerce involves the use of Visa Card or Master Card.
The Advantages of the E-Commerce:
1. Global Market: you can buy from any country.
2. Open 24 hours a day.
3. Saves the client's time.
The Disadvantages of E-Commerce:
1. Risk in payment due to disclosure of credit card number or bank account.
2. The risk of information leakage during transport, to a hacker who might change the
name of the buyer.
SAFETY AND HEALTH
Right methods to deal with the computer:
1. The screen: Adjust the screen's brightness settings
and position so that it is comfortable for your eyes.
2. The keyboard:It should be in front of you, and
under your hand. It should not be in the same level
or above your hand.
3. You should putthe mouseover a mouse pad to save
it from dust.
4. The chairandthe tableshould be adjustable and in
good height.
5. Use cleaning tools to clean up the computer.
6. Use original ink and good paper for printing.
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Health Problems which are caused by the wrong use of computers:
1. Wrong distance from the computer screen can result in vision problems and eye
inflammation.
2. Incorrect posture in front of the computer can cause neck pain, back pain and leg pain.
3. Inappropriate height of the table and chair can lead to back problems.
INFORMATION TECHNOLOGY PROTECTION:
Information Security:It is a science which focuses on how to provide protection to the
information and to avoid misuse of data.
How to provide protection for Information System:
-
Put password to log in for information.
Ensure that the source of e-mail attachments is genuine.
Adopt fingerprint, eye print or voice print systems in your Information system.
Create a backup copy of your work outside the system.
Use of encryption techniques.
Don’t leave your computer open when not in use.
Don’t leave your devices with any person.
Encryption: It is the altering of data so that it is not usable to prevent it from unauthorized
users.
VIRUS
It is a software program which is written with the intention of causing damage in a computer
system.
Virus spreading ways:
- Computer networks.
- Copying and distribution of illegal software through the internet.
Virus protection ways:
-
Don’t use flash or CDs from unreliable sources.
Use only registered software.
Never open e-mail attachments from unreliable source.
Install an anti-virus program and always keep it up-to-date.
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Assignment -1(IT)
(Due Date :(19/9/2013)
20
Name : ___________________________
Group : _____________________
Fill in the blanks:
Operating System
FirstRAM
Speaker
Data
ROM
Home page
Resources
1. An __________________ is responsible for the management of activities and the resources
of the computer.
2. _____________________is the memory which does not lose the information stored when
the power is switch off.
3. All files, printers and other hardware or software that the network users can share, are called
_________________.
4. The first web page you see when you launch internet explorer is called
___________________.
5. ______________________is used to output voice from a computer.
Write True or False (T / F)
1. The second generation computers used silicon chips.
(
)
2. ROM is the brain of the computer.
(
)
3. Bad posture in front of the computer can cause neck pain, back pain
and leg pain.
(
)
4. World Wide Web is a file created by an internet site to store information
on your computer.
(
)
5. Transfer Rate is the measurement unit for the CPU.
(
)
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Multiple Choice Questions
1.
_____________________ is the science which focuses on how to provide protection to
your information.
a) Biology
b) Chemistry
c) Information Security
d) Operating System
2.
Microprocessor was used in Computers of:
a) First Generation
b) Second Generation
c) Third Generation
d) Fourth Generation
3.
Storage Devices are of two types and they are:
a) Input and Output
b) On and off
c) Internal and External
d) Red and Green
4.
ISPare companies that provides:
a) Electricity
b) Internet
c) Water
d) Food
5.
To transfer a file from a network computer to local computer used
a) Downloading Process
b) Uploading Process
c) Transaction Process
d) Copying Process
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6.
Internet Explorer, Google Chrome are examples of:
a) Websites
b) Web Browsers
c) Home page
d) ISP
7.
The speed of the processor is measured in:
a) Mega Byte
b) Giga Hertz
c) Bytes
d) Bits per second
8.
Which of the following is a global network of inter-connected networks?
a) Intranet
b) Extranet
c) LAN
d) Internet
9.
What kind of Computer Memory is non- volatile or permanent?
a) Monitor
b) ROM
c) Hard Disk
d) RAM
10. Which of the following is an extension for the Excel files?
a) .xlsx
b) .pptx
c) .pdf
d) .bmp
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