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4. Name the information retrieval tool that helps to find content on Internet/WWW.
Ans. Search Engine
5. What is the keyword to enter in the search bar to find about all the cars except Hatchback cars?
Ans. Cars-Hatchback
B. Short answer type questions.
1. What is WWW? How is caching helpful while browsing the websites?
Ans. The ‘World Wide Web’ is a framework for accessing linked documents spread over millions of computing
devices over the internet. The World Wide Web (WWW) is a service of information in a combination of
text, photographs, graphics, audio, video, etc. that are presented on the Internet. Caching enables to store
data in memory. It allows to revisit or re-browse the same website while operating on the same computer
before switching it off.
2. Explain the concept of a Webserver and a client.
Ans. Web server is responsible for accepting requests from the client. It accepts connections from client (web
browsers on any computer) all over the internet and whenever an HTML document is requested, it is sent
using HTTP protocol. Client is designed to accept requests from remote computers and respond or send
on the information as requested.
3. Differentiate between POP3 and IMAP on the basis of mail downloading and organisation.
Ans. In POP3, to read the mail it has to be downloaded first but in IMAP the mail content can be checked before
downloading. In POP3, the user cannot organise mails in the mailbox of the mail server but in IMAP the
user can organise the mails on the server.
4. What makes e-Shopping more fruitful than traditional shopping? Give two points.
Ans. In e-Shopping the customer need not go to a shop, so one can save time and energy. In e-Shopping the
buyer can choose amongst hundreds of variety of the same product, but in a traditional shop, buyer can
view only a limited variety of product.
C. Long answer type questions.
1. Explain the working of a Search Engine in detail.
Ans. A search engine must have a very strong database for which the search engines use powerful programs
called ‘Spider’ or ‘Web Crawler’ that keeps on crawling on the web to catch any newly published web
page or document and finds their web address.
The documents and their web addresses are sent to the indexing tool which stores it in a database. It
also prepares an Index so that the information can be retrieved quickly from the database.
When the user enters the keywords or a query, the search engine weeds through millions of web pages
and the search software searches its database with the help of an index and displays the matching
documents or links.
2. What is an e-mail? Explain the parts of an e-mail address.
Ans. Electronic mail is a mailing service provided by the Internet by which one can send messages to any
person around the world through computer. An individual who avails the services of internet, must have
a unique e-mail address, i.e., (e-mail id). by which and to which messages are sent and received and that
can be accessed from anywhere at any point of time, with internet connectivity. There are two parts of
an e-mail address: i.e., the login identity and identity of the e-mail server, both of which are separated by
(at the rate. symbol).
Username: An e-mail address has a user identification (name). that contains some characters, here
‘info’.
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