Thursday, October 31, 2013

What is IP?

A complete tutorial about IP Address
Let us begin with IP Addresses.
What is an IP Address?
An Internet Protocol address is a
numerical label assigned to each
device (e.g., computer, mobile phone)
that is connected to a computer
network that uses the Internet
Protocol for communication.
An IP address is used for two
1) To identify whether the interface is
host or network.
2) To determine the location of the
IP Versions: IPv4 and IPv6.
Although IPv4 is the earlier version,
it is the most commonly used
IPv4 is a 32-bit decimal number
while IPv6 is 128-bit number.
IPv4 is normally written as four
numbers between 1 and 255, each
separated from the other by a
decimal point.
This standard is called as DOTTED-
There are countless IP addresses in
today's world!
What is the purpose of IP Address
Each IP Address Class provides the
following information:
Class A: First 8 bits → NETWORK ID
& remaining 24 bits → HOST ID
Class B: First 16 bits → NETWORK
ID & remaining 16 bits → HOST ID
Class C: First 24 bits → NETWORK
ID & remaining 8 bits → HOST ID
Class D: It represents a 32-bit
multicast group ID.
Class E: It is currently not being
used. (NO need)
For example,
Let us consider the IP Address
We know that it belongs to Class C.
Therefore, the NETWORK ID is
203.43.21 and the HOST ID is 12.

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