Telnet is a service of internet that allows a user to gain remote access to computer a interact with it.

Some of the examples are listed below:
a) TeamViewer
b) AnyDesk

a. Selling or buying goods on the internet.
- E-commerce

b. A private internet.
- Intranet

c. A service of internet that allows the user to post question for discussion.
- Newsgroup

d. A service of internet that allows a user to connect a remote computer.
- Telnet

e. Internet service that helps us to send and receive instant messages.
- Chat

f. A company that provides internet facilities.
- ISP

WWW: World Wide Web
URL: Uniform Resource Locator
ISP: Internet Service Provider
FTP: File Transfer Protocol
E-mail: Electronic mail
ISDN: Integrated Service Digital Network
VOIP: Voice Over Internet Protocol
Telnet: Telephone Network
IRC: Internet Relay Chat
PSTN: Public switched Telephone Network

a. E-mail and E-fax.

b. Internet and Intranet.

We can get following facilities fromtheinternet:
- WWW
- E-mail, chat, video conference, telnet.
- E-fax, file transferring.

The task of FTP are:
- It helps to transfer files through FTD.
- It helps to download hugeamount of data fastly.
-It helps to request file from client computers.
- It helps to provide files to client from server.

The task of HTTP are:
-It helps to communicate between web client and web severs.
- Itmovestherequest made by web browsers to webservers and respond the request.

The private computer network owned by a company oran organization and accessible only to its employees is calledintranet.
Any four features of it are:
- It runs onprivate networks within a network.
- It is closely related to internet.
- It serves as a powerful tools for communication within anorganization.
- It helps the employees to quickly find and view theinformations.

The websites which provides facilities to the users forpurchasingand selling goods through internet is callede-commerce site.
Any three ecommerce sites are:
-www.hamrobozar.com
-www.amazon.com
-www.kinmel.com.np

The most advanced services of internet that enables virtualface to face communication among peoplesitting atdifferent location is called video conference.

Any four websites that provides e-mail services are:
- yahoo.com
-altavista.com
- google.com
-msn.com

The services of internet that enables us to send and receive instant messages by using yahoo or msn messenger is called chat.
Its advantages are:
- It enables us to send and receive messages.
- It is easy and cheap means of communication.
- It is reliable and secure.
- It allows both text and voice chatting.

Electronic mail is one of the popular, reliable, convenientand secureway of sending and receiving mails throughthe internet at far distance.
Its advantages are:
-It is fast,easy,reliable and secure.
- It can be used at anytime at any places.
- Also files attachment can be sent.
- The physical presence of recipientis not required.

Web browser is a program that displays pages of awebsite on the user's computer sendingthe codes ordownloading the codes of website.
Any three webbrowserare:
-Google chrome
- UCbrowser
- Opera Mini

The difference between website and web pages are:

A website us the collection of different web-pages thatcontains the information about some particular topics orsubjectsthat can be accessed by specificdomain name.
Any two websites of Nepal are :
- www.askmattrab.com
- www.ntc.com.np

WWW is one service provided by internet which provides information about different topics or subjects.

The websites which allows the users to search informationbased on a keywords and links the users to thewebsites with the appropriate result is called searchengine.
Any three popular search engines are:
- yahoo.com
- google.com
-msn.com

The types of internet accesses are:
-Wired access.
- Wireless access.

The browsers that provide facility of the internet servicesto the users is called ISP (internet service provider).
Any 3 ISPs of Nepal are:
- Mercantile Office System (MOS)
-World-LINK
-NTC