Computing Homework

1. Internet
A global computer network providing a
variety of information and
communication facilities, consisting of
interconnected networks using
standardized communication protocols.

2. Domain and IP Addresses
A domain name is very similar to an address
forwarding service. The domain name is the
address people type in their web browser to
get to your web site. The "real" address of
your website is called the IP address and is a
series of numbers, such as 123.23.234.45.

3. Data packets and packet switching
This is a method of breaking data files into small
packets or chunks in order to send them across
a network. When you send a file, it isn’t sent as
one document, instead it is broken up into lots of
small “data packets”. The 2MB file would be
broken up into chunks of 512 bytes in size. A
packet is a basic unit of communication over a
digital network. 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.

4. Function of Routers
The two major types of routers are:
Static
Static routers require an administrator to manually set up
and configure the routing table and to specify each route.
Dynamic
Dynamic routers are designed to discover routes
automatically and therefore require a minimal amount of setting
up and configuration. More sophisticated than static routers,
they examine information from other routers and make packet-
by-packet decisions about how to send data across the network.
Routers communicate with each other to share information
about available paths and directly connected routes.

5. Sources
• http://thebushra.com/what-is-router-and-its-
function/
• http://computer.howstuffworks.com/internet/ba
sics/internet-infrastructure3.htm
• http://www.techopedia.com/definition/6751/dat
a-packet
• http://www.webopedia.com/TERM/P/packet_swi
tching.html
• http://what-domain-
names.blogspot.co.uk/2010/09/relationship-
between-domain-name-and-ip.html