Chapter 1: Introduction To Internet..

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1)  Fill in the blanks.

a.      In 1969 DOD of United States of America, started a network called ARPANET. 

b.      Every computer on the network exchanges information according to certain rules called protocols.
c.      Two protocos used for working with the internet are Internet protocol(IP) and Transmission Control Protocol(TCP). 

d.      Every network and computer system on the Internet has an address called Internet Protocal(IP) address.
e.      A modem is a computer peripheral that allows you to connect and communicate with other computer via telephone lines. 

f.      The WWW is a series of serves that are interconnected through hypertext.
g.      A hyperlink is a program that helps the user to navigate the WWW. 

h.      Home Page is a page where information resides in pages.
i.      A Web Page is simply a collection of informattion that is designed to be accessed in a special way. 

j.  The information on a website must also be speciallycoded using the HTML. 

2. Write T for the ture ststement and F for the false one. Correct the false ststement(s).
a. Internet is a network of network. (T)
b. The communication protocol is TP.(F)
Correct Ans:- The communication protocol is HTTP.
c. The conversion of analog signals into digital signals is called modulation.(F)
 Correct Ans:- The conversion of digital signals into anolog signals is called modulation.
d. Wi-Fi stands for Wireless Fidelity.(T)
e. A modem can send a fax from your computer to a fax machine.(T)
f. A Web page is a special type of file written in HTML.(T)
g. A browser program can read and interpret HTML document.(T)

3)A) Short-answer questions.

1.      What is Internet?

 Ans.:- Internet is an interconnection between several computer of different types belonging to various networks all over the world. It is a global of networks.

2.      What are the things you required to have Internet?

Ans.:-  We need to have Internet are-

·                    An Internet connection.

·                    A Modem.

·                    Internet access.

·                    A program which controls the communication of data over the hadrwar component.

3.      Define browser. Name two popular browsers.

Ans.:- Web browser is a communication program that reads and interprets HTML documents on the WWW(World Wide Web).

Some popular Web browsers are:-

·                   Microsoft Internet Explorer.

·                   Netscape Navigator.

·                  Mozilla Firefox.

·                  Safari.

·                  Opera, etc.

4.      What is WWW?

Ans.:- The fullform of WWW is World Wide Web. It  is an information system of interlinked hypertext documents that are accessed via the Internet and built on top of the Domain Name System. It has also commonly become known simply as the Web. 

5.      What are the two web addressing methods?

 Ans.:- There are two web addressing methods---

·                   Letter Addressing System.

·                  Number Addressing System.

6.      What is Hypertext?

Ans.:- Hypertext is basically an ordinary text that has some extra features such as formatting, images, multimedia and links to other documents.

7.      Define a URL.

Ans.:- The fullform of URL is Uniform Resource Locator. A web addressing scheme that gives the exact location of a document on WWW.

8.      What is HTTP?

Ans.:-  The fullform of HTTP is Hypertext Transfer Protocol. It is a communication protocol used to transfer all kind of information on the web.

9.      What is a Home Page?

Ans.:- Home Page is the first web page of a web browser or a website. 

10.  Name two Internet protocols used by the WWW.

Ans.:-  The two Internet Protocols are Internet Protocol(IP) and Transmission Control Protocol(TCP).

B)Long-answer question.

1.      How did Internet come into existence?

Ans.:- In 1969, the Department of Defence(DOD) of United States of America started a network called Advanced Research Projects Agency Network(ARPANET). It was started with one computer in California and three in Utah. Later, the military allowed universities to join the network for sharing the hardware and software resources. It grew bigger and bigger and gave birth to the present-day very popular Internet.

2.      What is a modem? Explain how it works?

Ans.:- Modem is a computer peripheral divice that allows us to connect and communicate with other computer via telephone lines. It converts the digital data into analog data and vice-versa. The fullform of Modem is Modulation and Demodulation. The process of converting  digital data into analog data is called Modulation. And The process of converting analog data into digital data is called Demodulation.

There are two type of Modem-

·                   Internal Modem

·                   External Modem

Internal Modem: Internal Modem is a Modem which is placed inside the CPU.

External Modem:  External Modem is a Modem which is placed outside the  CPU.

3.      What is a website and a webpage?

Ans.:- Website:- A website is a collection of related of one or many web pages, images, videos and other digital assets hosted on a web server.

WebPage:- The WWW comprises a large collection of document called web pages. It ia an electronic document written in a computer language called Hypertext Markup Language(HTML). Each web page has a unique address, called URL that identifies its location on the network.

4.      Differntiate between a web page and a home page.

Ans.:- The defferent between a web page and a home page are:-

a) The WWW comprises a large collection of document called web page on the otherhand the first web page of a web site or web browser is called Home Page.

b) A web page may or may not be a home page on the otherhand a home page is always a web page.

c) A web page is desined to provide detail information on any topic that a user demands on the otherhand a Home page is desingned to provide an overview of the content of the website.

5.      Differentiate between absolute URL and relative URL.

Ans.:-  The different between absolute URL and relative URL are:-

a) An Absolute URL is a fully qualified URL which specifies the exact location of a resource that residing on the internet on the other hand  a Relative URL is a partially qualified URL which specifies the partial location of a resource that residing on the the internet.

b) An Absolute URL is Independent on the otherhand  a Relative URL is dependent.

c)  An Absolute URL are not easily portable on the otherhand  a Relative URL are easily protable.

6. Explain the letter addressing system.
Ans:- The web address of any computer or network can be given using alphabets. This is called the letter addressing system and it is popularly known as the Domain Name System(DNS).

7. What are Web addresses?
Ans:- The Internet has millions of computers attached to it. In order to communicate, every computer connected to the Internet has a unique address whose format is defined by the Internet Protocol(IP) addressing system. Every computer connected to the internet has its unique web address, without which it cannot be reached by other computers. Also called universal resource locator or Uniform Resource Locator (URL).
8. What is the number addressing system?
Ans:- Every TCP/IP network requires a unique network number, and every host on a TCP/IP network requires a unique IP address. The number addressing system takes care of this. A numeric or IP address comprises four numbers, each less than 256, joined together. An IP address is a 32-bit number that uniquely identifies a network interface on a machine. IP addresses are written in decimal digits, formatted as four 8-bit fields, separated by periods. Each 8-bit field represents a byte of the IP address. The byte ranges from 0 to 255.
9. How does the Internet work?
Ans:-

 

When data is passed from one computer system to another, it is broken up into pieces called packets using TCP. Each packet contains 1500 bytes or characters. IP adds the IP address of the sender and the destination to each packet so that it reaches the correct destination. The packets are passed from one network to another until they reach their destination. At the destination, TCP reassembles the packets into a complete message. If packets are garbled, a request is sent to the sender to resend them.

10.  Explain any three methods of Internet access.

Ans:- The methods are:-

a)Dial-up:- It is a connection between the computer and the ISP with the help of a modem. Dial-up connection is a limited time-duration connection that uses a telephone line to connect to the ISP server.

b)ISDN:- ISDN lines are used to transmit data over digital telephone lines.

c)Broadband Service:- Broadband Internet access, often shortened to broadband, is a high-data-transmission rate Internet connection.

4. Choose the correct option.

a. Wi-Fi stands for

(i) Wireless File. (ii) Wireless Fidelity. (iii) Wiring Fidelity. (iv) none of these.

Ans:- (ii) Wireless Fidelity

b. A popular consumer broadband technology.

(i) DSL (ii) URL (iii) Wi-Fi (iv) none of these.

Ans:- (i) DSL

c. First page of a Web site is called

(i) Web page (ii) Home page (iii) first page (iv) none of these.

Ans:- (ii) Home page.

d. A collection of one or many related Web pages, images, videos and other digital assets hosted on a Web server.

(i) Web site (ii) URL (iii) Both i and ii (iv) none of these

Ans:- (i) Web site

e. Areas with Wi-Fi service.

(i) Wi-Fi area (ii) Wi-Fi spot (iii) Hot spot (iv) none of these

Ans:-  (iii) Hot spot.

f. http://www.oup.com is an example of

(i) relative URL (ii) absolute URL (iii) both i and ii (iv) none of these.

Ans:-(ii) absolute URL.

g. _________________ part of http://www.webaddress.edu represents service provider.

(i) http (ii) www (iii) webwddress.edu (iv) none of these.

Ans:- (i) http

h. Program that helps the user to navigate WWW.

(i) Web site (ii) Browser (iii) Web page (iii) none of these.

Ans:- (ii) Browse.

i. Every computer on a network exchange information according to certain rules called

(i) protocols (ii) networking (iii) surfing (iv) none of these

Ans:- (i) protocols

j. Which part of TCP/IP is responsible for breaking up data into small pieces at all source computer?

(i) IP (ii) TCP (iii) Both i and ii (iv) none of these.

Ans:-  (ii) TCP

Chapter 2:- Internet Services..

               

1)Fill in the blanks.

a.       Google is a good example of a Search Engine.

b.      Search engines broadly consist of three components: The Crawler,  The Index, The Search Algorithm.

c.       An E-mail program enables you to send, receive and manage your message through the World Wide Web.

d.      Downlode  means to transfer files from the system you have called to the computer you are using.

e.      Uplode means to transfer files from your hard disk to the Computer System you have accessed by a modem.

f.        News Group  provide a good way to exchange information with people of similar interests.

g.       Telnet is a medium that allow a user to log in to a remote computer and function as if he/she are connected directly to that computer.

h.      FTP  helps you to exchange files between computer on the internet.

i.        E-banking  is also called online banking.

j.        The buying and selling of product on the Internet is called E-Commerce.

2) Write T for true statement and F for the false one. Correct the false statement(s).

a.       An e-mail is an electronic message sent from one computer to another. (T)

b.      If you receive an e-mail notification that you have won a lottery of Rs. 50,000 immediately reply with your name and telephone number.(F)

Correct Answer:-  If you receive an e-mail notification that you have won a lottery of Rs. 50,000 don’t give any reply with your name or telephone number or etc.

c.     The acronym of BCC is Broad Carbon Copy.(F)

Correct Answer:- The acronym of BCC is Blind Carbon Copy.

d.      You cannot add emoticons to your e-mail message.(T)

e.      You can send the same message to several people at the same time.(T)

f.        You can have video chat and audio chat.(T)

g.       A person who posts the entries in a blog is called blogger.(T)

h.      You cannot send picture online.(F)

Correct Answer:-  We can send picture online.

i.        On Twitter, the message can be up to 1000 characters.(F)

Correct Answer:-  On Twitter, the message can be up to 140 characters.(F)

j.        Cloud is a space on the Internet that can be used for storage of files and online sharing.(T)

        
3) A)Short-answer questions.

     1.       Define surfing.

      Ans.:-  Exploring information on the web is called web surfing.

     2.       Name any three  search engines.

     Ans.:- Some search engines are: Google,Magellan,Yahoo,Hotbot,Excite,Lycos,Webcrawler, Khoj, Infoseek etc.

     3.       What do you understand  by chat rooms?

     Ans.:- Chat Room is a virtual room where a chat session takes place.

     4.       What are newsgroups?

    Ans.:- Newsgroups are similar to e-mail except that instead of sending  our message to someone’s   mail box, the message is posted on a bulletin board where anyone can read it and respond.
This allows a discussion to take place among several people.

     5.       Name any two sites that offer the service of free e-maili
     Ans.:-  Some sites that offer the service of free e-mail account are: www.hotmail.com, www.yahoo.com, www.rediff.com etc.

     6.       What is Telnet?

     Ans.:- A medium that allows our PC to connect to another network and login as if we were on that system.

      7.       What is video conferencing?

     Ans:- Video Conferencing or Video Teleconference(VTC) represents a real-life meeting environment. It has brought the world much closer than it was before. With the help of VTC facility we can see each other while talking.

     8.       What is FTP?

    Ans.:-  File Transfer Protocol(FTP) is a standard Internet protocol is the simplest way to exchange   files between computers on the Internet. It uses the Internet’s TCP/IP protocols.

     9.       What is E-learning?

     Ans.:- E-learning refers to education using electronic delivery methods such as CD, DVD, Video Conferencing, Web sites and E-mail.

    10.   What is E-group?

    Ans:- An e-group is an easy-to-use e-mail group service. As a member of an e-group, we can send an e-mail or message to all the register members of the group by using a single e-mail address.

B. Long-answer questions

   1. How does a search engine find information on a specific topic? Explain with an example.

   Ans:- The steps are:- 
            a.       Connect our computer  to the internet. 
            b.      Open the Web Browser such as Internet Explorer. 
            c.       Type www.google.com or www.google.co.in at the address bar and press Enter. 
           d.      Type a phrase or words related with our search topic such as CPU on the Search box and press Enter key. Few moments later some search result  appears. 
            e.      Click any one search result as our wish and display the desired information for us. 
2. Define the following terms:

            i. Uploading.

           ii. Downloading.

  Ans:-  Uploading:-  Uploading files means to transfer files from our computer’s hard disk drive to the computer system.

            Downloading:-  Downloding files means to transfer files from the system we have called to the  computer’s hard disk drive.

  3. What do you understand by chat room?

  Ans:-  Chat is a program that enables us to communicate with others in real-time (there and   then) through text messages. Online textual talk is called chatting. Web sites offering online chat are called Chat rooms.

  4. Write any four facilities provided by the Internet.

       Ans:-  Some facilities are:-

          a.       E-Commerce.

          b.      E-Learning.

          c.       E-Banking.

          d.      E-Shopping.

          e.      E-Reservations.

          f.        E-Groups, etc.

   5. What are the steps for sending an e-mail? Explain with an example.

       Ans:-  The steps are:- 

•                        Connect our computer to the internet. 
•                 Open any web browser such as Firefox.
•                      Type www.gmail.com  at the address bar and press Enter. Home page of Gmail appears.
•                      Type the username and password at username box and password box respectively.
•                      Click on “sign in” button. Our E-mail account appears.
•                      Click on “Compose mail” button.
•                    Type our friend’s (recipient) e-mail address at “To” box, write the subject at the “Subject” box and then type our text at the “text” box.
•                  Now, just click on “Send” button to send it to our friend.
•                   Finally, click on “Sign out” button to close our account.

  6. What is the different between Cc  and Bcc?

      Ans:- The fullform of Cc is Carbon Copy. It allows us to send the same message to several people at the same time. In this case, every recipient will know to whom all the mail has been sent. This field is optional.

The fullform of Bcc is Blind Carbon Copy. It allows us to send the same message to several people at the same time but in this case, no anyone recipient will know to who all the mail has been sent. This field is optional.

   7. What is VTC?  How does it takes place?

       Ans:-  The fullform of VTC is Video conferencing or Video TeleConference(VTC) represents a real-life meeting environment. It has brought the world much closer than it was before. With the help of VTC facility, we can see other people while talking to them.
A camera takes the video picture and also records the associated audio. The picture and the audio signal are converted into compressed digital signals. This converted audio and video signal are transmitted through a modem to the other end where they are converted back into the picture and audio, which is projected on the screen on the screen and heard through the speakers.

    8. Explain four kinds of e-commerce models.

       Ans:- There are four kinds of e-commerce models :-

          a.       Business-to-Business(B2B).

          b.      Business-to-Cinsumer(B2C).

          c.       Consumer-to-Consumer(C2C)

          d.      Digital middlemen.

9. Write shot notes on (i) blogs, (ii) e-reservation, and (iii) social networking.

  Ans.:- (i) Blog:- A blog is a type of web site, usually maintained by an individual, with regular entries of news on a particular subject, descriptions of events, graphics or videos.
(ii) E-reservation:-  E-reservation allows us to reserve our seat in rail or airplane, hotal, cruise, cinema, make appointment to a clinic, and many more without leaving our seat. 
(iii) Social Networking:- Social networking focuses on building online communities of people who share interest and/or activities. These web sites are being used by millions of people regularly to communicate and share information.

10.What is E-learning? Explain its advantages and disadvantages. 
Ans:- E-learning refers to education using electronic delivery methods such as CD, DVD,Video Conferencing, Web sites and E-mail.

 The Advantages of E-learning are:-

       a.       It reduces the travel time and cost.

       b.      The study material can be accessed conveniently at any time and any place.

       c.       It promotes self-paced learning.

       d.      It encourages students to take responsibility of their learning and therefore, builds      self-confidence.

       e.      The lesson can be made more interactive by combining text with audio, video, animations, etc.

       f.        The same content is delivered to every learner, which avoids problems such as different teacher supplying different materials on the same subject.

       g.       The cost associated with infrastructure, instructor’s salary etc., is reduced.

  The Disadvantages of E-learning to Students:-

      a.       Basic knowledge of computers is necessary to access and use course content.

      b.      Printed books can be read  anywhere, but for e-learning, one needs to have access to a computer/laptop. An Internet connection may also be required.

      c.      There is no social and cultural interaction.

      d.     The initial cost of developing course content may be quite high and updating the same would require further investment.

4. Choose the correct option.

a.       The program that lets you send, receive and manage your messages through WWW.

   (i)                 Web browser.

   (ii)               Web site.

   (iii)             E-mail.

   (iv)              Home Page.

   Ans:- (iii)  E-mail.

b.      The Bcc option in e-mail message is used to

  (i)                 Add the address of the sender.

  (ii)               Add the address of the recipient.

  (iii)             Attach document to the message.

  (iv)             Send the same message to several people at the same time without letting them know that others have also received the same message.

  Ans:- (iv) Send the same message to several people at the same time without letting them know that others have also received the same message. 
c.       A folder that contains the details of incoming messages.

      (i)                 Sent.

      (ii)               Draft.

      (iii)             Inbox.

     (iv)              Deleted.

     Ans:-  (iii) Inbox.

d.    The option used to send the received message to someone else.

   (i)                 Reply.

   (ii)               Forward.

   (iii)             Delete.

   (iv)              New.

    Ans:- (ii) Forward.

e.      The option used to create a new message.

    (i)                 Delete.

    (ii)               Forward.

    (iii)             Reply All.

    (iv)              New.

     Ans:- (iv) New

f.        Which one of the following is not a social networking Web site?
   (i)          Twitter
   (ii)         Facebook.

   (iii)             MySpace.

   (iv)              Hotmail. 
   Ans:- (iv) Hotmail.

g.     This category of newsgroup covers the scientific topic.

    (i)                 Edu

    (ii)               Sci

   (iii)             Taik

   (iv)              Biz.

   Ans:- (ii) Sci

h.  Which one of the following is not a chat software?

   (i)                 Windows Live Messenger.

   (ii)               Google Talk.

   (iii)             Yahoo! Messenger.

   (iv)              Photoshop.

    Ans:-  (iv) Photoshop

i.        A school’s Web site, which provides study material to students is an example of

      (i)                 E-governance

     (ii)               E-business

     (iii)             E-learning

     (iv)              E-mail.

     Ans:- (iii) E-learning

j.        An online operation of bank account is an example of

     (i)                 E-governance.

     (ii)               E-business.

     (iii)             E-learning.

     (iv)              E-mail.

  Ans:- (i) E-governance

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