"MY HIGHSCHOOL LIFE"

"MY HIGHSCHOOL LIFE"

I'm very happy with my highschool life today because of my new "friends" and i found <3 <3...... :")

 

"Philippines election 2013"

"Philippines election 2013"

 

I was so excited in this 2013 election because i think this is the start of changes i hope all the CANDIDATES is good and faithful in their promises. <3

"POPE BENEDICT XVI"

"POPE BENEDICT XVI"

I was saddened Kunti told to resign news that was "the pope benedict XVI" good turn his achievements in the town and in the christianism: "(<3

 

"VALENTINES DAY"

"MY EXPERIENCE IN VALENTINES"

In "valentines day" I went to school and listened to our teacher i fell asleep because I'm too excited for tomorrow because too like that of "day of open heart" if I confused the heck give the woman became "inspired" my life so I said to myself nalang "BAHALA NA SI LORD" :") <3

 

FIVE TYPES OF INTERNET CONNECTION

Types of Internet Connections.

Posted on May  24th, 2009 by Technology Department 

As technology grows, so does our need for things to go faster. Ten years ago, websites just included images, coloured text and some repetitive melodies. Now Flash websites, animations, high resolution photos, online gaming, videos or streaming ( radio on the internet ), are getting more popular for people who demand faster and faster internet connections.
The connection speeds listed below represent an average speed at the time of publication ( May 2009 ). This will no doubt change over time.

1) PCI modem( see image above ). Analogue up to 56000 bits per second. It means that in a second, 56000 bits ( 0 or 1 ) travel through the copper wire. It is both economical and slow and it is also called dial-up access. If you connect the modem, you get internet but as it uses the analogue telephone line, if you surf on the internet, nobody can call you because the line is busy.
Using a modem connected to your PC which is very cheap ( about 10 €) , users connect to the Internet only if you click on the telephone Access Icon and the computer dials the phone number provided by your ISP ( Internet Service Provider ) and connects to the network. The signal is analogue because data is sent over an analogue telephone network. This modem converts received analogue data to digital ( always analogue on the telephone site and digital on the computer side ).
As dial-up access uses ordinary telephone lines the data rates are limited and the quality of the connection is not always good. Nowadays very few people use this type of connection.
 

2) DSL

DSL or - an 'always on' connection- uses the existing 2-wire copper telephone line connected to the internet and won't tie up  your phone like the old modem does. There is no need to dial-in to your ISP as DSL is always on. DSL is called ADSL ( Short for Asymmetric Digital Subscriber Line) for home subscribers.
As we said before ADSL is short for asymmetric digital subscriber line and supports data rates up to 10Mbits ( May 2009 ) when receiving data ( download ) and from 16 to 640 Kbps when sending data ( upload ). ADSL is called asymmetric because it supports different data rates for upload than for download traffic.

3) Cable

There are two type of cable; Coaxial and optic fibre. The first one is used by cable TV and that is common for data communications ( see image on the left ).
The cross-section of the cable shows a single centre solid wire made of copper surrounded by a copper mesh conductor. Between the main wire ( in the centre ) and the mesh conductor is an insulating dialectric. This dialectric ( blue part in the image ) has a large effect on the essential features of the cable. Depending on the material that isulator is made of, the cable has different inductance and capacitance values and these values affect how quickly data travels through the wire. The last layer is an outside insulator to protect the whole wire.
Data is transmitted through the rigid wire, while the outer copper mesh layer serves as a line to ground.
 

Optic Fibre.

Fibre-optic cables are strands of a special optical material as thin as a human hair that carry data ( files, videos .. ) over long distances. Now, there is not electrical signal. In Optical fibres data are carried as light signals

How Does an Optical Fiber Transmit Light?

What is the secret of optical Fibre? Why doesn't the light ray escape from the strand?
Suppose you want to shine a torch beam down a long, straight corridor. Just point the beam straight down the corridor. -- light moves in straight lines so the light will reach to the end of the corridor.
What if the corridor has a bend in it? . Just place a mirror at the bend to reflect the light beam towards the other side of the corridor.
What if the corridor has multiple bends? You might places as many mirrors as bends so that it bounces from side-to-side all along the corridor. This is what happens in an optical fibre.
4) Wireless Internet Connections

Wireless broadband (Wireless Internet Connections ). Instead of using cable networks for your Internet connection, WIC uses radio frequency .Wireless Internet can be accessed from anywhere as long as your WIFI adaptor is located  within a network coverage area. It also provides an always-on connection and  it is still considered to be relatively new.

5) Satellite
IoS short for  Internet over Satellite allows a user to access the Internet via a geostationary  satellite that orbits the earth. A geostationary satellite is a type of satellite placed at a fixed position above the earth's surface. Because of the large distances between home and satellite,  signals must travel from the earth up to the satellite and back again. It causes  a slight delay between the request and the answer.
 

2 Types of Computer Network

2 Types of Computer Network

LAN and WAN were the original categories of area networks, while the others have gradually emerged over many years of technology evolution. 

LAN - Local Area Network

A LAN connects network devices over a relatively short distance. A networked office building, school, or home usually contains a single LAN, though sometimes one building will contain a few small LANs (perhaps one per room), and occasionally a LAN will span a group of nearby buildings. In TCP/IP networking, a LAN is often but not always implemented as a single IP subnet. 

WAN - Wide Area Network

  As the term implies, a WAN spans a large physical distance. The Internet is the largest WAN, spanning the Earth.

 A WAN is a geographically-dispersed collection of LANs. A network device called a router connects LANs to a WAN. In IP networking, the router maintains both a LAN address and a WAN address. 

A WAN differs from a LAN in several important ways. Most WANs (like the Internet) are not owned by any one organization but rather exist under collective or distributed ownership and management. WANs tend to use technology like ATM, Frame Relay and X.25 for connectivity over the longer distances.

ILLUSTRATION of WAN and LAN :

internet used

The Internet (or internet) is a global system of interconnected computer networks that use the standard Internet protocol suite (TCP/IP) to serve billions of users worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic, wireless and optical networking technologies. The Internet carries an extensive range of information resources and services, such as the inter-linked hypertext documents of the World Wide Web (WWW) and the infrastructure to support email.
Most traditional communications media including telephone, music, film, and television are being reshaped or redefined by the Internet, giving birth to new services such as Voice over Internet Protocol (VoIP) and Internet Protocol Television (IPTV). Newspaper, book and other print publishing are adapting to Web site technology, or are reshaped into blogging and web feeds. The Internet has enabled and accelerated new forms of human interactions through instant messaging, Internet forums, and social networking. Online shopping has boomed both for major retail outlets and small artisans and traders. Business-to-business and financial services on the Internet affect supply chains across entire industries.
 
 http://en.wikipedia.org/wiki/Internet

 Internet >

How To Use The Internet

This RFC is being distributed... to make available some "hints" which will allow new network participants to understand how the direction of the Internet is set, how to acquire online information and how to be a good Internet neighbor... Distribution of this memo is unlimited. -  E. Krol, The Hitchhikers Guide to the Internet, September 1989.

The Internet is a complex space with a rich set of useful features and functions. Knowing how to get the most out of the Internet can help you as much as knowing how to read, maybe more.
Each of the individual Internet application chapters includes a section on how to use the technology, listed below for convenience and ordered by year of creation.

Technology	Invented
How To Use The Internet	1969
How To Use Email	1971
How To Use Mailing Lists	1972
How To Use MUD's	1979
How To Use The Usenet	1980
How To Use IRC	1988
How To Use The Web	1990http://www.livinginternet.com/i/iu.htm

The Internet (or internet) is a global system of interconnected computer networks that use the standard Internet protocol suite (TCP/IP) to serve billions of users worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic, wireless and optical networking technologies. The Internet carries an extensive range of

internet

  

DefinitionSave to FavoritesShow Examples

A means of connecting a computer to any other computer anywhere in the world via dedicated routers and servers. When two computers are connected over the Internet, they can send and receive all kinds of information such as text, graphics, voice, video, and computer programs.
No one owns Internet, although several organizations the world over collaborate in its functioning and development. The high-speed, fiber-optic cables (called backbones) through which the bulk of the Internet data travels are owned by telephone companies in their respective countries. The Internet grew out of the Advanced Research Projects Agency's Wide Area Network (then called ARPANET) established by the US Department Of Defense in 1960s for collaboration in military research among business and government laboratories. Later universities and other US institutions connected to it. This resulted in ARPANET growing beyond everyone's expectations and acquiring the name 'Internet.' The development of hypertext based technology (called World Wide web, WWW, or just the Web) provided means of displaying text, graphics, and animations, and easy search and navigation tools that triggered Internet's explosive worldwide growth.

Today, Internet is one of the most widely used functionality irrespective of age, experience and other considerations, and changed the way of human life in an unimaginable manner. Internet is a network of networks interconnecting thousands of smaller computer networks worldwide to share information and communicate with one another. A set of protocols is responsible for enhanced transfer of data across millions of computers interconnected through internet. The components of Internet along with the underlying architecture are all responsible for sharing of resources. In the subsequent sections of this article, we will discuss more about what is Internet, its architecture, and how internet works.

(Image source: sxc.hu)

History of Internet

Way back in 1970 it was started by United Sates of America as Advanced Research Projects Agency Network (ARPANET) wherein they linked computers to ease the transfer of data. Later on in 1980’s the National Science Foundation derived something called NSFNET which has later become the Internet. Today Internet is a huge network of computers connected to numerous networks across the globe being accessed by millions of users. The Internet has further been improved by development of services like World Wide Web and Gopher.

What is Internet: Architecture

The main architecture revolves round the hardware components and a system of many Software layers. Internet Engineering Task Force (IETF) handles the responsibility of Internet architectural design. IETF develops certain standards that are feasible to all through a series of publications called Request for Comments (RFC) and they further constitute Internet Standards. This describes a Protocol suite named Internet Protocol Suite. The model architecture divides the methods into layers of which Top layer is named Application layer and below it is the Transport layer that hosts Client-Server Model with typical data exchange methods. The main layer named Internet layer enables computers to identify and locate each other via Internet Protocol (IP) addresses and allows them to connect to one another. (know more – difference between IPv4 and IPv6) The last layer is the Link layer that provides connection between hosts on the same local networks like Local Area Network (LAN) or in some cases Dial Up connections. The basic algorithm of a set of protocols is the entire underlying factor that allows for sharing of resources across millions of interconnected networks. This model has also been called TCP/IP model wherein these layers are independent of its underlying Hardware.

An Insight into the components of Internet

The various components of Internet are e-mail, FTP and Usenet groups. The most widely used part of the Internet is World Wide Web (WWW) which is a consortium for introducing web pages and supports text, images, videos and multimedia. It is a regulated service that runs on the Internet and is based on Client Server Computing model. Each time a client requests a document from Web Server, through a certain mechanism, the server uses a protocol called Hyper Text Transfer Protocol (HTTP) to fulfill the request.  All the content and web pages are visible on various kinds of web browsers. In order to view a web page, you need to type the Uniform Resource Locator (URL) that is unique to each domain. The term Domain Name describes the publishers name or who published that particular page. Some of the most common Domain names end with com, org, net, info, edu, etc. Internet Service Providers (ISP’s) purchase services from larger networks and in turn shares their resources to various interlinked local connections.

How does Internet work

The web world works on the most outstanding Client-Server Model wherein the Client (browser) runs on a local computer and the Server runs on a web host. In order to use the web you need to type the URL and the browser makes the connection to a server using HTTP protocol. Then the server accepts the connection and sends the file back to the browser and thus closes the connection. It is the duty of the web browsers to interpret the HTML pages and display them efficiently.

How to connect to Internet and Its cost fundamentals

There are millions of users belonging to various fields of occupations connecting to Internet from various places around the world. It is not only limited to the educated but has rampantly attracted others too. You can connect to the Internet through Phone Line, Cable, DSL and Wireless and you need to connect to Internet Service Provider and thus can enjoy uninterrupted access. Every one who uses Internet should pay for the service to their local service providers while they in turn purchase from the larger networks. So at every level there are certain price functionalities that are framed. Today, it is true to say that Internet is the backbone for every organization or business establishment or companies or rather for any existence in order to build up business or to further establish interactions.

Read more: http://www.businessdictionary.com/definition/internet.html#ixzz2JiXrT58u

information resources and services, such as the inter-linked hypertext documents of the World Wide Web (WWW) and the infrastructure toWW) and the infrastructure to support email. <3