HSLC Computer Science Solution
Chapter 1 : Introduction to the Internet.
SEBA CLASS 10 Computer Science Chapter 1 Introduction to Internet Important Notes
1. Short Answer Questions
a. What is the Internet?
Ans: The Internet is the communication between several computers of different types of networks around the world.
b. What do you mean by protocols?
Ans: Protocols are a set of rules that computers use to communicate logically.
c. Say the names of any two ISPs in India.
Ans: BSNL and Airtel
d. Provide a complete DSL and ADSL form.
Ans: DSL stands for Digital Subscriber Line. On the other hand, ADSL represents the Asymmetric Digital Subscriber Line.
e. Mention any two commonly used web browsers.
Ans: Google Chrome and Mozilla Firefox are two of the most widely used web browsers.
f. What do you mean by home page?
Ans: The first web page of a website is called the home page.
g. What is HTML used for?
Ans: HTML stands for Markup HyperText Language
h. What is another name for Letter Addressing System? Give one example of Letter Addressing System.
Ans: Another Letter Addressing System name is Domain Name System (DNS).
One example of a Talking Book program is assam.gov.in
i. What is the next domain extension?
i.)Educational institutions
Ans: .edu extension of the domain of educational institutions.
ii.) Network organizations
Ans: .net extension extension for communication organizations.
j. Write a short note on 3G.
Ans: The third generation of 3G telecommunication technology provides data transfer speeds of at least 200 kbps. It finds applications un video calls, mobile internet access, GPS and rooted internet access.
SEBA CLASS 10 Computer Science Chapter 1 Introduction to Internet Important Notes
2. Answers to long questions
a. State the policies that are commonly used to work with the Internet.
Ans: The two most commonly used rules for working with the Internet are
(a) Internet Protocol (IP)
(b) Transmission Control Protocol (TCP)
b. Explain the use of channels.
Ans: A channel is a method used to transfer information or data from one computer to another. These channels are then connected to the internet through wartime and modern. In this way, a few routes from one system to another can be established.
c. Distinguish between router and modem.
Ashes: Ashes are tools that guide the fullness of the internet by deciding the best course of action, while modems help computers and computer networks to connect to the internet by telephone or cable.
SEBA CLASS 10 Computer Science Questions answers HSLC
d. What is an IP address and what is its use?
Ans: Each computer system on the Internet has an Internet address called an IP address. This address is used for exchanging information, sending or receiving email messages, etc.
e. Describe the process of transferring data from one computer system to another.
Ans: When data is transferred from one computer system to another, it is broken down into fragments called packets using TCP. Each packet contains 1500 bytes or letters. IP adds the sender's IP address and destination to each packet to reach the correct location.
Packets are transferred from one network to another until they reach their destination. At the destination, TCP reassembles the packages into a complete message. If the packages are sealed, a request is made to the sender for retrieval. It is not necessary for all packets in one message to take the same route online or the same message to take the same route each time you are sent. Therefore, one of the strengths of online technology is that if certain parts of it are not available for data transfer, the data will still be sent in another way.
f. What do you mean by inconsistency and retrenchment?
Ans: The process of converting digital signal to analog signal is called modulation, and converting analog signal to digital signal is called demodulation.
SEBA CLASS 10 Computer Science Questions answers HSLC
g. What do you mean by World Wide Web?
Ans: World Wide Web is an Internet-based network of hypertext servers. Hypertext is a method of presenting information where the highlighted text selection reveals more information on a particular topic. These highlighted items, called hyperlinks, allow users to move from one document to another which may be located on the same or different server. To navigate the Internet, one must use web browser software.
h. Distinguish between website and web page.
Ans: A website is a collection of one or more related web pages, images, videos, and other digital assets hosted on a web server. Although, a web page is an electronic document written in a computer language HyperText (HTML).
SEBA CLASS 10 Computer Science Chapter 1 Introduction to Internet Important Notes
i. What is HTTP? Why is it necessary?
Ans: HyperText Transfer Protocol (HTTP) is a communication protocol used to transfer all kinds of information (text, images, audio, video, and other multimedia files) to the web. In addition to HTML files and other formats that can run on any web server, the server contains an HTTP protocol designed to wait for HTTP requests and handle them as they arrive. Your web browser is an HTTP client, sending requests to server servers. When you apply a file to a browser application by opening a Web file (by typing a URL) or by clicking the hypertext link, the browser creates an HTTP request and sends it to the HTTP server on the local server server. The server, on the other hand, receives the request and after performing any necessary processing, returns the requested file to the client (i.e., the web browser) that has run the application on your computer.
j. Describe two types of Web presentation programs with examples.
Ans: Two types of web communication systems are:
(a) The Alphabet System and (b) The Numerical System
(a) Character Map: The web address of any computer or network can be provided using alphabets. This is called a Letter Addressing System. It is better known as the Domain Name System (DNS). Some examples of the Book Talk Program are assam.gov.in, yahoo.com, hotmail.com, oup.com.
(b) Numerical System: Every TCP / IP network requires a different network number and every host on a TCP / IP network requires a different IP address. The numerical system addresses this. A numeric or IP address consists of four numbers, each of which is less than 256, grouped together. An IP address is a 32-bit number that specifically identifies network connections on a machine. IP addresses are denoted by decimal digits, formatted as four 8-bit fields, separated by periods. Each 8-bit field represents a bypass IP address. Byte from 0 to 255. Example: 132. 168. 1. 100
SEBA CLASS 10 Computer Science Important Notes.
Application-based questions
1. Arup bought a new computer. You want to have an internet connection at home.
a. Apart from the computer, what are some of his hardware needs?
modem
b. Can you suggest the names of any two Internet Service Providers you can contact to get an Internet connection?
Answers: BSNL and Airtel
c. What kind of Internet connection should you choose?
Answer: Broadband Services
2. Gorma wants to build a website for her father's company.
a. What language should he learn to do this?
from: HTML
b. What software will he need to view the website?
Ans: Web browser (Example: Google Chrome, Mozilla Firefox, etc.)
3. Khelan's mother asks her to open her school website and tell her the following:
a. What is the first page of the site called?
Ans: The home page is called the homepage
b. How are web pages linked?
Ans: Web pages that are linked to hyperlinks
4. At the URL http://www.abccompany.com
a. What does .com suggest?
Ans: .com suggests that the URL belongs to a commercial organization
b. Which section identifies the type of protocol?
Ans: The HTTP component identifies the protocol type.
5. Monjul wants to connect his cell phone. Which of the two is 2G or 3G-better, and why?
Ans: 3G is better because it transmits more data at about 200 kbps
SEBA CLASS 10 Computer Science Chapter 1 Introduction to Internet Important Notes
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