Internet
InternetBy Bryce Johnstone
What exactly does the internet mean?TheInternetis a global
system of interconnectedcomputer networksthat use the
standardInternet protocol suite(TCP/IP) to link several billion
devices worldwide. It is an internationalnetwork of networksthat
consists of millions of private, public, academic, business, and
governmentpacket switchednetworks, 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-linkedhypertext documents
andapplicationsof theWorld Wide Web(WWW), theinfrastructureto
support email, andpeer-to-peernetworks forfile sharingandtelephony.
More than 100 countries are linked into exchanges ofdata, news and
opinions. According toInternet World Stats, as of December 31, 2011
there was an estimated 2,267,233,742 Internet users worldwide. The
number of Internet users represents 32.7 percent of the world's
population.
Link between the IP address & Domain NameThe IP address and
domain name are two different identities, but their roles are same
to the world. They are connected and supporting each other, the IP
address needs the domain name to function properly. So does to
domain name, it cannot go online without connecting to IP
address.
Whats a Data packet?Whats packet switching?A packet is a basic
unit of communication over a digital network. A packet is also
called a datagram, a segment, a block, a cell or a frame, depending
on theprotocol. When data has to be transmitted, it is broken down
into similar structures of data, which are reassembled to the
original data chunk once they reach their destination.
Packet switching is whereprotocolsin which messages are divided
intopackets before they are sent. Each packet is then transmitted
individually and can even follow different routes to its
destination. Once all the packets forming a message arrive at the
destination, they are recompiled into the original message.
Function of a router Theroutersdetermine where to send
information from one computer to another. Routers are specialized
computers that send your messages and those of every other Internet
user speeding to their destinations along thousands of
pathways.
Places I looked
athttp://www.linfo.org/router.htmlhttp://www.techopedia.com/definition/6751/data-packetTeach
ICT
