Chapter 2
INTERNET & SERVICES
1) What is internet?
Ans: Internet is an interconnection
of several thousands of computers of different types belonging to the various
networks all over the world.
2) Who controls the Internet?
Ans: Different organization
like ISOC (Internet Society), W3C (World Wide Web Consortium), IAB (Internet
Architecture Board), IEFT (Internet Engineering Task Force), IRTF (Internet
Research Task Force), IESG (Internet Engineering Steering Group) and INIC (Internet
Network information Centre) gives directive and guideline for the proper use of
internet.
3) List the components required for internet
connection.
Ans: The components for
internet connect are:
i) A TCP/IP enabled computer
with web browser
ii) An account with an ISP
iii) MODEM
iv) Connection (ISDN,
Satellite, cable and dial-up)
4) List the services provided by internet.
Ans: The services provided by
internet are:
i) WWW (World Wide Web)
ii) E-mail (Electronic mail)
iii) FTP (File Transfer Protocol)
iv) IRC (internet Relay Chat)
v) News Group
vi) Telnet
vii) Internet Telephony
viii) E-commerce
5) What is E-mail?
Ans: E-mail (Electronic mail)
is one of the most popular services provided by the internet which exchanges
messages between the computers.
It is the method of
transferring/transmitting data, text, file, digital photo or audio or video
file from one computer to another computer over the internet.
6) Write down the advantages of E-mail.
Ans: The advantages of email
are:
i) It allows to send and
receive message across the world at very low cost.
ii) It is very fast compared
to postal system.
iii) The image, sound, video
and documents can be attached to e-mail message.
iv) Multiple copies of same
message can be sent to many people.
7) Write down the disadvantages of e-mail.
Ans: The disadvantages of
e-mail are:
i) Minor mistakes in e-mail
address may deliver the mail to wrong address.
ii) Since it passes through a
vast electronic network, it may be seized in between.
8) What is newsgroup?
Ans: A newsgroup is a
discussion group that discuss on particular topic such as politics, health,
computer, etc.
9) What is telnet?
Ans: A telnet is a program
that allows a user to log in to a remote computer on internet as a user on that
system.
10) What is FTP?
Ans: It is the internet tool
that allows the user to transfer the file from one computer to another.
11) What is IRC?
Ans: Internet Relay Chat is
one of the important services provided by the internet which allows the user to
communicate with other people in real time.
12) What is internet telephony?
Ans: It is one of the cheapest
and reliable services provided by the internet that allows the user to make
telephone communication or voice communication through internet.
13) What is FAQ?
Ans: FAQ (Frequently Asked
Questions) is an online document that possesses series of common questions and
answers on a specific topic.
14) What is E-commerce?
Ans: It is the buying and
selling of goods over the internet.
15) What is video conferencing?
Ans: It is the transmission of
image/video and audio/speech back and forth between two or more geographically
dispersed person.
16) What do you mean by online
banking?
Ans: Online banking is the
practise of making transaction using the internet.
17) What is webpage?
Ans: Webpage is an electronic
document written using a computer language called HTML.
18) What is website?
Ans: It is a collection of
webpages that can be published by an organization or individual.
19) What is uploading?
Ans: Uploading refers to
copying files or documents, programs or data from the user computer to the
internet server.
20) What is downloading?
Ans: Downloading refers to the
copying files or document or program or data from the internet server to the
user computer.
21) What is web browser?
Ans: Web browser is a computer
program that access web pages and displays them on the user computer.
22) What is URL?
Ans: It is a unique address
that provides location of a webpage on the internet.
23) What is browsing/ surfing?
Ans: Browsing/ Surfing means
searching information on the internet.
24) What is search engine?
Ans: Search engine is the
website that allows the user to search the information based on keywords on
combination of keywords. They are used to locate specific sites and
information.
25) What is URL?
Ans: Each web page has a unique
address that provides location on the internet is known as URL (Uniform
Resource Locator).
26) Write down the name of any four
web browsers.
Ans: Any four web browser are:
i) Google chrome ii) Mozilla Firefox iii) Opera iv) Internet explorer
27) Write down the name of any four
search engine.
Ans The name of any four
search engines are:
i) Google ii) Bing iii) MSN iv) Yahoo
28) List down the types of modulation.
Ans: The types of modulation
are
i) Amplitude Modulation (AM)
ii) Frequency Modulation (FM)
iii) Phase Modulation (PM)
29) Write down the names of four ISPs
of Nepal.
Ans: The names of four ISPs of
Nepal are:
i) World Link
ii) Broad Link
iii) Mercantile
iv) Otel
30) What is ISP?
Ans: It is a company that
provides Internet and E-mail service.
31) What is ISDN?
Ans: It is a high speed
digital communication network involving from existing telephony integrated
digital network (IDN) which provides end to end digital connectivity to support
a wide range of services including voice and non-voice service.
32) Write down the names of any four search
engine.
Ans: Names of any four search
engine are:
• www.google.com
• www.yahoo.com
• www.bing.com
• www.ask.com
33) Write down the names of any four sites which
provides e-mail services.
Ans: Names of any four sites
that provides e-mail services are:
• www.yahoomail.com
• www.hotmail.com
• www.gmail.com
• www.outlook.com
34) Write down the names of any four web browser.
Ans: The names of any four web
browsers are:
• Google chrome
• Opera
• Mozilla Firefox
• Internet Explorer
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