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Intranet
This is a private network, inside an organization or company, that
uses the same software you will find on the public Internet. The
only difference is that an Intranet is used for internal usage only.
Internet
The Internet is a globally linked system of computers that are
logically connected based on the Internet Protocol (IP). The
Internet provides different ways to access private and public
information worldwide.
Internet
address
To participate in Internet communications and on Internet
Protocol-based networks, a node must have an Internet address
that identifies it to the other nodes. All Internet addresses are IP
addresses
IP
Internet Protocol is the standard that describes the layout of the
basic unit of information on the Internet (the packet) and also
details the numerical addressing format used to route the
information. Your Internet service provider controls the IP address
of any device it connects to the Internet. The IP addresses in your
network must conform to IP addressing rules. In smaller LANs,
most people will allow the DHCP function of a router or gateway
to assign the IP addresses on internal networks.
IP address
IP address is a 32-
b
inary digit number that identifies each sender
or receiver of information that is sent in packets across the
Internet. For example 80.80.80.69 is an IP address, it is the closet
thing the Internet has to telephone numbers. When you “call” that
number, using any connection methods, you get connected to the
computer that “owns” that IP address.
ISP
Internet Service Provider, is a company that maintains a network
that is linked to the Internet by way of a dedicated communication
line. An ISP offers the use of its dedicated communication lines
to companies or individuals who can’t afford the high monthly
cost for a direct connection.
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J
JAVA
Java is a programming language that is specially designed for
writing programs that can be safely downloaded to your computer
through the Internet without the fear of viruses. It is an object-
oriented multi-thread programming best for creating applets and
applications for the Internet, Intranet and other complex,
distributed network.
L
LAN
Local Area Network a computer network that spans a relatively
small area sharing common resources. Most LANs are confined to
a single building or group of buildings.
N
NAT
Network Address Translator generally applied by a router, that
makes many different IP addresses on an internal network appear
to the Internet as a single address. For routing messages properly
within your network, each device requires a unique IP address.
But the addresses may not be valid outside your network. NAT
solves the problem. When devices within your network request
information from the Internet, the requests are forwarded to the
Internet under the router's IP address. NAT distributes the
responses to the proper IP addresses within your network.
Network
A network consists of a collection of two or more devices, people,
or components that communicate with each other over physical or
virtual media. The most common types of network are:
LAN – (local area network): Computers are in close distance to
one another. They are usually in the same office space, room, or
building.