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INTERNET AND E-MAIL
Internet and E-mail scope is the Fourth Grading coverage of the second year students under UBD program of DepEd.
INTERNET AND E MAIL NOTES

INTERNET

Internet is a global network of many computers connected via telecommunication networks. The computers communicate using a set of protocols called TCP/IP(Transmission Control Protocol/Internet Protocol).



NETWORK

Network is a group of computers and associated devices connected by communications facilities (both hardware and software) to share information and peripheral devices, such as printers and modems.



ISP

ISP is a company that provides and sells physical Internet access to users. ISP is a company that provides access to the Internet. ISP stands for Internet Service Provider.

Examples:- UCC, Africaonline, Simbanet, Raha, Cybertwiga, Datel, TTCL, Internet Africa (Intafrica), Cats-net

MODEM

Modem stands for Modulator/De-modulator. Modem is a hardware device that allows a computer to transmit and receive information over telephone lines. A modem converts digital data from computers into analog data that can be transmitted over the telephone lines. Traditional modems can carry data at speeds of up to 56Kbps. Kbps stands forKilobits per second. Kbps is a measure of data transmission speed



PROTOCOL

Protocol is a standardized means of communication among machines across a network. Protocols allow data to be taken apart for faster transmission, transmitted, and then reassembled at the destination in the correct order. The protocol used determines the way errors are checked, the type of compression, the way the sender indicates the end of the transmission, and the way the receiver indicates that the message has been received. Protocols can describe low-level details of machine-to-machine interfaces (e.g., the order in which bits and bytes are sent across a wire) or high-level exchanges between allocation programs (e.g., the way in which two programs transfer a file across the Internet).



IP

Internet Protocol is the most basic protocol to communicate on the Internet. An IP number is a numerical address consisting of four numbers seperated by periods. Each IP address uniquely identifies a certain computer on the Internet. The domain name is used to make using them easier.

Examples:- 62.109.133.133 (This is IP number for fcbayern.de)

62.97.112.167 (This is IP number for fcbarcelona.com)

193.111.180.25 (This is IP number for arsenal.com)

193.110.243.34 (This is IP number for liverpoolfc.net)

194.185.176.211 (This is IP number for acmilan.it)

194.185.176.205 (This is IP number for sslazio.it)

195.78.8.101 (This is IP number for asm-foot.mc)

195.121.255.168 (This is IP number for ajax.nl)

195.126.51.12 (This is IP number for bayer04.de)

195.162.250.5 (This is IP number for borussia-dortmund.de)

209.202.96.201 (This is IP number for manutd.com)

212.80.167.216 (This is IP number for realmadrid.com)

212.48.10.44 (This is IP number for juventus.it)

212.55.150.193 (This is IP number for fcporto.pt)

213.60.254.25 (This is IP number for canaldeportivo.com)

213.146.130.230 (This is IP number for chelseafc.co.uk)

213.162.200.230 (This is IP number for valenciacf.es)

217.169.113.132 (This is IP number for inter.it)

217.72.108.130 (This is IP number for asroma.it)

TCP/IP

TCP/IP (Transmission Control Protocol/Internet Protocol) is the communications protocol that connects your computer to the Internet.



FTP

FTP (File Transfer Protocol) - This is a way of transferring files over the Internet from one computer to another.



HTTP

HTTP (Hyper Text Transfer Protocol) is the protocol used between a Web browser and a server to request a document and transfer its contents. HTTP is the standard language that computers connected to the World Wide Web use to communicate with each other.



HTML

HTML (HyperText Markup Language) is the coded format language used for creating hypertext documents on the World Wide Web and controlling how Web pages appear.



DOMAIN NAME

This is the unique name that identifies an Internet site. Domain Names always have at least two parts, which are separated by dots. The part on the left is specific whereas the part on the right is more general.

Examples:- tanzanet.org

ippmedia.com

isidingo.co.za

netscape.net

whitehouse.gov

tanzania.go.tz

ccm.or.tz

harvard.edu



BROWSER (WEB BROWSER)

Web Browser or Browser is a program that allows a user to find, view, hear, and interact with material on the World Wide Web. Web Browser or Browser is a software program that lets you find, see, and hear material on the World Wide Web, including text, graphics, sound, and video. Popular browsers are Netscape Navigator, Mosaic, Opera, Internet Explorer.

NOTE:- Web Browser or Browser is an application program that interprets HTML and presents the final Web page. A browser is used to surf the World Wide Web.

SERVER

Server is a computer that provides shared resources to network users. A server is a computer program that provides services to other computer programs.

URL

URL (Uniform Resource Locator) is the World Wide Web address of a site on the Internet. The URL for the Tanzania Revenue Authority, for example, ishttp://www.tra.go.tz/



HYPERTEXT

Hypertext is any text that contains links to other documents - words or phrases in the document that can be chosen by a reader and which cause another document to be retrieved and displayed. Hypertext usually refers to any text available on the World Wide Web that contains links to other documents.



HYPERLINK

Hyperlink is a graphic or piece of text in a Web page that, when clicked with a mouse, causes another file on the Web to be accessed.



WEBPAGE

WEBPAGE is an individual file that is made up of HTML code. A webpage is an HTML file that has a specific URL and is accessible via the www. Sometimes referred to as a page, a document, or a home page.

WEBSITE

Website is a group of Web Pages that collectively represent a company, or individual on the World Wide Web. A group of web pages that have been developed together to present information on specific subjects is also a Web Site. A website is a collection of pages designed to present information over the World Wide Web.

WWW

WWW (World Wide Web) is the Internet facility that allows you to browse linked Web pages. WWW is a collection of online documents on Internet servers worldwide. World Wide Web documents are written in HTML. In order to use the World Wide Web, you must have a World Wide Web browser.

E-MAIL

E-mail (Electronic Mail) is the mail system that is used on the Internet to pass messages from one person or group of people to another. The systems also permits the transmission of pictures and sounds. E-mail means Messages, usually text, sent from one person to another via computer. E-mail can also be sent automatically to a large number of addresses (Mailing List).

E-MAIL ADDRESS

E-mail Address is the unique Internet address to which your e-mail is delivered. A complete E-mail address is composed of the username, "@" and the name of the server where the user's mailbox resides. For instance username@domain name.

Suppose your E-mail address is https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=Vitunguu@yahoo.com. Your username is Vitunguu. Your mail is on the Yahoo.com server. Generally, E-mail addresses are case insensitive. If mail is undeliverable because of a bad address, you receive a message. If the message indicates "user not found," you probably made a spelling error to the left of the "@." However, if the error message indicates "server not found," the problem is to the right of the "@."

Examples (E-mail Addresses):-

https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=ukoko@hotmail.com

https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=usingizi@yahoo.com

https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=ditopile@netscape.net

https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=sisimizi@wowmail.com

https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=utajiju@usa.net

https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=hajijumtu@darhotwire.com

https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=manjonjo@newafrica.com

https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=firigisi@dobmail.com

https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=chipsidume@excite.com

https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=tembojike@uccmail.co.tz

https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=usionesoo@nyenzi.com

https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=semanae@coolmail.com

https://mail.google.com/mail/h/28tzbz7p14wm/?&v=b&cs=wh&to=zombe@gmail.com

USERNAME

Username is the name that identifies a user to a computer network; generally used in conjunction with a password to establish the user's right to access a host (server). Username can also be known as ID or Screen Name or Login Name or Sign In Name

Examples:- utajiju, usingizi, uroda, sisimizi, utumbo etc etc



PASSWORD

Password is a secret combination of characters used to access a secured resource such as a computer, a program, a directory, or a file; often used in conjunction with a username.

SEARCH ENGINE

Search Engine is a program that searches documents for specified keywords and returns a list of the documents or Web pages where the keywords were found. Search Engine is an Internet site that allows users to search for specific information or Web sites.

Popular Search Engines are:- http://www.altavista.com/

http://www.webcrawler.com/

http://www.msn.com/

www.google.com

http://www.hotbot.com/

http://www.lycos.com/

http://www.yahoo.com/

www.searchengine.com

http://www.excite.com/

http://www.cnn.com/

http://www.netscape.net/

http://www.start.co.tz/

http://www.infoseek.com/



ATTACHMENT

AN Attachment is a file that is sent along with an e-mail message. Examples Picture File, Microsoft Excel file, Microsoft Word file, Microsoft Access file etc etc etc etc etc

CLIENT

Date: 15/01/2013

By: rty

Subject: er

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Date: 15/01/2013

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