Information and Communication Technology

Ans. Information and communication technology (lCT) is defined as the scientific methods and means to store, process and transmit vast amounts of information in second with the help of electronic equipment’s.

Q2. What is the relation between information technology and telecommunications.

Ans. Information Technology: The scientific method used to store information, to arrange it for proper use and to communicate it to others is called information technology (IT).

Telecommunication: The method that is used to communicate information to far off places instantly is called telecommunication.

Q.3 Write the names of the components of Computer Based Information.

Ans: System (CBIS).

Ans. Parts of Computer Based Information System

i) Hardware ii) Software iii) Data iv) Procedures v) Peoples

Q.4 What is meant by Data?

Ans. Data: Facts and figures that are used by programs to produce useful information is called data.

Q.5 Write names of two parts of computer.
Ans. Parts of Computers

i) Mouse ii) Keyboard iii) Speakers iv) CD’s v) Floppy vi) CPU vii) Hard disk vii) Monitors

Q.6 Where is coaxial cable wires used?

Ans: Uses of Coaxial cable wires:

(i) Coaxial cable wires are used to transmit electric signals such as cable TV to your home.

(ii) To prevent electric and magnetic interference from outside, a covering of conducting material surrounds the coaxial wires.

Q.7 What do you mean by flow of information?

Ans: Flow of Information: Flow of information means the transfer of information from one place to another through different electronic and optical equipment.

Q.8 Why Micro waves are more effective for satellite communication?

Ans: Micro waves are more effective for satellite because microwaves travel in straight lines through the space and give a very strong signal we can connect to the other side of the world in milliseconds.

Q.9 What do you know about Photo phone?

Ans: Photo phone: Modern version of phone is photo phone or video phone, contrary to a common telephone, users can see the pictures of each other.

Q.10 Define optical fiber.

Ans: Optical fiber: An optical fiber with a coating of lower refractive index is a thin strand of high-quality glass that absorbs very little light. An optical fiber cable is a bundle of glass fibers with thickness of a human hair.

Q.11 How light signals are sent through optical fiber?

Ans: Light that enters the core at one end of the optical fiber goes straight and hits the inner wall (the cladding) of fiber optics. If the angle of incidence with cladding is less than the critical angle, some of light will escape the fiber optics and is lost. However, if the angle of incidence is greater than the critical angle, light is totally reflected into the fiber optics. Then the totally reflected beam of light travels in a straight line until it hits the inner wall again and so on.

Q.12 Define CPU. Why it is called brain of computer?

Ans: Central processing unit (CPU)

The most important piece of hardware is the central processing unit (CPU). It contains a tiny rectangular chip called microprocessor. It is the “brain” of computer the part that translates instructions and performs calculations.

Q.13 Define operation system and give example.

Operation System: The operation system and (OS) is software that manages your computer and the devices connected to it. Two well known operating system are windows and Linux operation system.

Q.14 What is meant by compact disc?

Ans. Compact disc: A molded plastic disc containing digital data that is scanned by laser beam for the reproduction of recorded sound or other information. This is based on laser technology. It is usually said (C.D).

Q.15 Differentiate between Primary and Secondary.

Ans. Primary Memory: It is based electronics and consists of integrated circuit (lCS). It consists of two parts ROM’ and RAM. ROM starts the computer and RAM used in computer as temporary.

Secondary Memory: The data storage devices are generally the secondary memory of the computer. It is used to store the data permanently in the computer. When we open a program data moves from secondary memory to primary memory.

Examples: Audio video cassettes and hard disk.

Q.16 For data storage floppy disk is better or hard d Give reason.

Ans: Hard disk is metallic disk, which is move better to store data as compare to floppy disk. Floppy disk is not reliable as compare to hard disk and the storage capacity of hard disk is thousands time is more as floppy disk.

Q.17 What is flash drive?

Ans: Flash Drive

It is also electronic based device and consist of data storage ICS. A flash derive is small storage device that can be used to transport files from one computer to another.

Q.18 Define data managing.

Ans: Word Processing: Word processing is such a use of computer through which we can write a letter, prepare reports and books. By means of this
we can develop any document and see it on the screen after typing.

Data Management: To collect information for a special purpose and to store it in a computer in a file form, which may help at times when we need?

Q.19 What is meant by global web?

Ans: Global Web: Internet is a global web of more than several million nets in which more than 50 million computers are operating and several millions
people participate through the world. The number is increasing day by day. Contact can be made at any time during the day or night on internet.

Q.20 What is E-commerce?

Ans: E-commerce: Electronic commerce commonly written as E-commerce is the trading or facilitation of trading in products or facilitation of trading in products or services using computer networks such as the internet.

Q.21 What are the two main services used on the internet?

Ans: This function allows users to view web pages using a web browser. This function allows us to send and receive text messages.

Q.22 What are browsers? Give example.

Ans: Web Browsers: A browser is an application which provides to the window to the web. The most popular browsers on the market today include.

i) The world ii) Opera iii) Safari iv) Mozila Firefox v) Internet Explorer vi) Google chrome

Q.23 Describe the importance of fast communication.

Ans: We can message anywhere in the world instantly. We can send our messages to many friends or people only in one action. Pictures or other files can also be sent through e-mail.

Q.24 What is meant by let in information and communication technology?

Ans: ICT is basically an electronic based system of information transmission reception, processing and retrieval. ICT is a blend of two fields information technology and telecommunication.

Q.25 What is difference between web-browsing and e-mall?

Ans: Web-browsing

Web-browsing allows users to view web pages. The main purpose of web-browsing is to get information from world web.
E-mail

E-mail allows people to send and receive text messages.
The main purpose of e-mail is transformation of information.

Q.26 What is telecommunication?
Ans: Telecommunication: The method that is’ used to communicate information to far off places instantly is called telecommunication.
Sources: Mobile phones, radar and transmission to satellites in space are important sources.

Q.27 What is the difference between data and information?
Ans: Data

Data are facts that are used by programs to produce useful information.
Information: In computer terminology, processed data is called information.

Q.28 How many essential parts a communication system contains?

Ans: A communication system is consists of two parts that are:

(a) Information technology (I.T)

(b) Telecommunication

Q.29 BSc and MSc stands for what words?

Ans. BSc Stand for: “Base Stations Centre”
MSc Stands for: “Mobile Switching Centre”

Q.30 What is Fax Machine?
Ans: A fax machine basically scans a page to convert its text and graphic into electronic signals and transmits it to another fax machine through telephone line. The receiving machine converts the signal and uses a printer to create the copy of the message that was sent.

Q.31 What do you know about cell phone?

Ans. Cell Phone

Radio technology is applied in mobile phone. It is a type of radio having two way communications. A cell phone carries a radio transmitter and a receiver inside it. It sends and receives the message inform of’ radio waves. Cell phone system consists of

i) Cell ii) Base Stations Centre (BSC) iii) Mobile Switch Centre (MSC)

Q.32 Write down two use of computer in daily life.

Ans. Uses of Computer

Computer is used for advance booking of rooms, preparing bills and providing enquiry services in hotels.
In railways, computers are used for rail reservation, printing of tickets and preparation of reservation charts.

Q.33 What is super computer?

Ans. The most effective and fastest computer that can send information to us in the 10^-12 part of a second is called super computer. Super computer consists on many processors.

Q.34 What is difference between RAM and ROM memory?

Ans. ROM

Rom, stand for read only memory which starts the computer.

RAM: RAM stands for Random Access memory which is used in computer as temporary memory. RAM Vanishes when computer is switch off

Q.35 What is floppy disk and hard disk?

Ans. Floppy Disk

A floppy disk is a small magnetically sensitive, flexible plastic wafer housed in plastic case can store data up to few bytes.

Hard Disk: Most users rely on hard disk as their primary storage devices. A hard disk is a rigid magnetically sensitive disk that spins rapidly and continuously inside the computer chassis or in a separate box connected to the computer housing.

Q.36 Why data cannot be stored in floppy disk for long time?

Ans. Floppy disk is reliable only for short-term storage data and cannot be used longer no attempts should be made to save the data for a longer period because A floppy disk works on the principle of magnetism and as its magnetic field weakens its data will also be lost. That’s why data cannot be stored in floppy disk for long time.

Q.37 Define internet.

Ans. Internet: Internet is a network of networks which spreads all across the globe.

Q.38 What is meant by A.T.M?

Ans. Automated teller machine (A.T.M):

A.T.M means an automated teller machine (ATM) is an electronic banking outlet. Which allows customers to complete basic transactions without the aid of a branch representative or teller? There are two primary types of automated teller machines or ATM.

Q.39 For what purpose browsers are used?

Ans. A browser is an application which provides a window to the web. All browsers are designed to display the pages of information located at web sites around the world.

Q.40 Write the two uses pf electronic mail.

Ans. Advantages of E-mail

E-mail delivers messages very fast in everywhere throughout world.
Communication through e-mail is more quick and reliable, as well as low cost.

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