OVERVIEW OF THE INTERNET : The Internet Address

WHAT IS IP ADDRESS???

➣ A number that uniquely identifies each computer or device connected to the Internet.
➣ IP addresses are also referred to as IP numbers and Internet addresses.
➣ IP address sometimes is called a dotted decimal number or dotted quad.

IP USAGE

➭ A way to find specific server or computer on the Internet or a network.
➭ Provide identity to a computer in a network.
➭ Identify for a articular device/machine on a particular network.
➭ Allows transfers of files and e-mail.


IP STRUCTURE

➝ IP address usually consists of four groups of number each separated by a period.
➝ The number in each group is between 0 and 255.
➝ It is 32 bit long, each group is 8 bits long.
➝ Commonly written in decimal.
➝ Written, for example, 128.35.0.72
➝ These four  sections represent the machine itself and the network it is on.
➝ The network portion is assigned.
➝The host section is determined by the network administrator.
➝5 classes of IP address A B C D and E:

• Class A : reserved for governments/ companies
• Class B : reserved for medium companies
• Class C : reserved for small companies
• Class D : reserved for multicasting
• Class E :  reserved for future use

IP VERSIONS

⇨ IP Versions 4 (IPv4)

⇨ IP Versions 6 (IPv6)