Chapter 10 INTERNET AND PROTOCOLS CLASS 7

 

Chapter 10

INTERNET AND PROTOCOLS

A.    Tick the correct option :-

1.    In which year was ARPANET developed? C. 1969

2.    Which of the following is not an internet service provider? C. Google

3.    Which protocol is used to transfer files from one computer to another? A. FTP

4.    Which of the following is not a network protocol? D. UTP

5.    Which of these is not an example of a VOIP app? Google chrome

 

B.    Write T for True or F for False

1.    ARPANET was started by the UK Department of Defense.  FALSE

2.    DSL uses radio frequency for connecting to the internet. FALSE

3.    HTTPS is a secure version of HTTP.  TRUE

4.    IMAP is used to download emails from the server to the client computer and delete the copy once the email is downloaded. FALSE

5.    An IPv6 address is 32 bits long. FALSE

 

C.    Circle the ODD one out

1.      Airtel    reliance    MTNL     Skype

2.    Opera    Safari       Zoo     Google Chrome

3.    Gps    kbps    tbps     gbps

4.    Skype    Wechat    WhatsApp    Viper

5.    POP    SMTP    IMPA    IMAP

 

 

D.   Write the full forms and functions of the following protocols

1.    TCP/IP- transmission control protocol/Internet protocol

2.    SMTP- Simple mail transfer protocol

3.    IMAP- Internet message access protocol

4.    FTP- File transfer protocol

5.    HTTP- Hypertext transfer protocol

E.     SHORT ANSWER QUESTIONS-

1.    What do you need to connect your computer to the internet?

Ans Following things are required to connect computer to the internet-

1.    An internet service provider (ISP)

2.    Wired or Wireless Internet access

3.    A modem

4.    A web browser

2.    What do you understand by an ISP? Give two examples

ANS- An internet service provider (ISP) is an organization that provides the internet connection.

3.    Explain VoIP with examples.

ANS- VoIP (Voice over internet protocol) is the transmission of voice and multimedia content over a digital network.

For example, online calls from Google Hangouts, Skype, WhatsApp, Viber and WeChat make use of this protocol for communication.

4.    Define modem.

ANS- Modem stands for modulator-demodulator. A modem is a device used to connect and then send and receive data from one computer to another in a network. A modem converts digital data into analog form and analog data into digital form.

5.    Write three uses of the Internet?

ANS- Three uses of internet are-

1.    Online shopping

2.    E-learning

3.    Communication over internet

F.     Long answer questions-

1.    How did the internet come into existence? Evolution of networking started way back in 1969 by the development of first network called ARPANET. The goal of this project was to connect computers at U. S. defense & different universities. In 1980's, the NSFnet was starated to make high capacity network strictly for academic and engineering research. In 1990s the internet working of ARPANET, NSFnet and other private networks resulted into Internet.

2.    Differentiate between dial- up and broadband connections.

Ans2. Dial up connections-

1.    Slow speed connection

2.    PC has to dial via phone line to connect.

3.    Dial up connection uses analog transmission.

          Broadband connections

1.    High speed connection

2.    PC continually connected to internet( always on connection)

3.    Broadband connection uses digital transmission.

3. Write a short note on-

1.    HTTP-  HTTP stands for Hypertext Transfer Protocol. It is the primary protocol used to access the World Wide Web

2.    HTTPS- Hypertext transfer protocol secure (HTTPS) is the secure version of HTTP, which is the primary protocol used to send data between a web browser and a website. HTTPS is encrypted in order to increase security of data transfer.

3.    TCP/IP- TCP/IP stands for Transmission Control Protocol/Internet Protocol and is a suite of communication protocols used to interconnect network devices on the internet. TCP/IP is also used as a communications protocol in a private computer network (an intranet or extranet).

4.      IMAP- Internet Message Access Protocol (IMAP) is a standard protocol for accessing email on a remote server from a local client.

5.    TELNET- Telnet is a protocol that allows us to connect to remote computers (called hosts) over a TCP/IP network (such as the internet).

4.     What is Internet addressing? Explain.

ANS4. An Internet address, also called an IP address, is a unique number given to each device to identify it on a computer network. It gives computer system an address to communicate with other systems on the network.