The Internet

The term internet (lower case i) is used to describe multiple networks connected. When talking about the WWW you use Internet (capital I).

When designing the net there were two key factors that needed to be considered: 

  •  No central control computer. 
  •  The network should be able to deliver information between two computers.
  • Information send/needed reaches it’s destination, despite some devices not working.

 

Internet Search engine

 

The WWW is made up of thousands of individual networks called a LAN or a WAN. There are many benefits of using LAN or WAN, as individuals need to communicate with resources on other networks. 

The internet isn’t a single network, it’s an arrangement of individual networks. These connected to each other are called internetworks or internet for short. These networks cooperate with each other to exchange information, by using a common protocol standard. Information can be transmitted through a variety of forms including:

  • Telephone wires.
  • Fibre optic cables.
  • Wireless.
  • Satellite links.
  • Copper wire.

As the WWW is made up of mass groups of networks, it means it is not owned by a single person or organization. This ensures effective communication across the whole infrastructure. It does however require an application of consistent and commonly recognized technologies. These need standards, as well as the help of many network administration agencies. There have been organizations developed. They are to help maintain the structure and standardization of Internet protocols and processes.

Some of these organizations are the:

  • IETF.
  • ICANN.
  • IAB.

To name a few.

 

Internet Connection

There are several different ways to have users and organization connected to the WWW. A home office or small office, are required to use a SP to get access to the net. The popular choices are:

  • Broadband Cable.
  • Broadband DSL.
  • Wireless WAN’s.
  • Mobile Services.

A large organization or international business, need access to corporate sites and the net. A fast connection is required to support business services like:

  • IP phones.
  • Video conferencing.
  • Date center storage.

There are business-class connections provided by SP’s. The popular connections for large organizations are:

  • Business DSL.
  • Leased lines.
  • Metro Ethernet.

The Common connection options for a small office and a home office user are:

  • Cable
  • DSL
  • Cellular
  • Satellite
  • Dial-up telephone

Choices on connection types varies, depending on the geographical area and provider availability. A lot of homes and small offices are commonly connected with fibre optic cables. Fibre optic allows Internet service providers deliver higher bandwidth speeds and to support more devices such as:

  • The Internet
  • Phones
  • TV’s

A corporate business connection option are different from home connection options. A large business needs are different requiring high bandwidth, dedicated bandwidth and managed services. The connection options depend on the number of service providers located nearby. Some off these options are:

  • Dedicated Leased Line
  • Metro Ethernet
  • Business DSL