A PowerPoint about Packets, routers and ip addresses.

1. Packets, routers and IP addresses
The Internet is a global system of
interconnected computer networks that
use the standard Internet protocol suite to
link several billion devices worldwide. The
internet is linked to each other by a
network of telephone lines, cables and
satellite connections.

2. The link between domain names and
IP addresses
The 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.

3. Data packets and packet switching
A data packet is a unit of data made into a single
package that travels along a given network path.
Data packets are used in Internet Protocol (IP)
transmissions for data that navigates the Web, and
in other kinds of networks. Packet switching is a
digital network transmission process in which data
is broken into suitably-sized pieces or blocks for fast
and efficient transfer via different network devices.
When a computer attempts to send a file to
another computer, the file is broken into packets so
that it can be sent across the network in the most
efficient way.

4. function of routers
A router is able to both send and receive packets of
information from computer networks. If a person is
connected to the Internet via an ISP, or Internet service
provider, the router obtains packets from the personal
computer, before sending them to the Internet using
the ISP's modem. The response, which is typically a
Web page or other information from a queried address,
returns to the router, which is then relayed back to the
user's computer.

5. References to sources
For the first slide I used www.wikipedia.co.uk
for the information, for the second slide I used
the site blogspot.com, on the third slide I used
www.techopedia.com, an the fourth slide I used
the sites www.techopedia.com and
www.wikipedia.com.