An Analysis of the Internet
The internet can be defined as a “network of networks”. A single
network consists of two or more computers that are connected to share
information. The internet connects thousands of these networks so all
of the information can be exchanged worldwide. Connections are
typically made through a modem, a device that allows computers to
exchange and transmit information through telephone lines.
A modem takes digital information and passes it through a series of
steps to convert it to analogue signals or sound waves that can be
passed over a telephone line. The process is reversed when the modem
converts information coming in from the phone line. Modems transfer
the information at a rate of bits per second (bps). A modem with
high-speed capabilities will assure a faster connection on the
Once the computer is connected to the internet, it is called a local
site, and the computers communicating with the local site are called
the remote sites. Many remote sites are hosted by organizations called
domains. Domains are designations that indicate the type of web site.
* .gov – government
* .edu – educational
* .com – commercial providers.
* .org – non-profit organizations.
* .co.uk – company in the United Kingdom.
Internet Service Provider
Access to the internet is becoming easier to handle and cheaper to
buy. An internet service provider (ISP) provides connectivity to the
internet and offers services such as email, web hosting and filtering.
An ISP effectively acts as the interface between computers, allowing
data to flow between them regardless of location.
The two broad connectivity models offered by ISPs are dial-up and
broadband. Dial-up establishes temporary connections via a telephone
connection, which are created as required and continue to function
until termination by either party. With a broadband connection the
link is permanently on.
Most ISP connections use the traditional wired telecommunications
network. Alternatives include data connectivity over the cable TV
network, satellite connectivity and fixed wireless access where
A search engine is a programme designed to help find specific
information, normally through a key word of a phrase, stored in the
World Wide Web or a personal computer. It retrieves a list matching
the criteria asked for a matter of seconds.
A search engine works in stages the first being web crawling followed
by indexing.Web pages are retrieved by a web crawler, the contents of
each page are then analyze to determine how it should be indexed
The most popular search engines used on the internet today are:
* msn search
Meta Search Engine
A Meta search engine is a search...