WHAT IS A NETWORK OR IP ADDRESS?

 

NETWORK 0R IP ADDRESS   is an identifier for a node or host on a telecommunications network. Network addresses are designed to be unique identifiers across the network, although some networks allow for local, private addresses, or locally administered addresses that may not be unique.

-it is more commonly known as IP address.

-it is the numeric address of a computer connected to the network.

-is a set of numbers, called as “octets” or “dotted decimal” notation, that identifies any network device.  Example: 172.16.254.1

IP VERSIONS 

IPv4 is the standard version

            * is the most widely deployed Internet protocol used to connect devices to the Internet. It is the specific version of IP address that we all know and become accustomed with. Addresses are canonically represented in dotted-decimal notation, which consists of four decimal numbers, each ranging from 0 to 255. Separated by dots. 

Example: 172.16.254.1. Each part represents a group of 8 bits (octet) of the address

IPv6 is the advanced version

BINARY DIGITS

128 64 32 16 8 4 2

 

CLASSES OF IP ADDRESS

Class A - 1 to 126

Class B - 128 to 191

Class C - 192 to 223

Class D - 224 to 239

Class E - 240 to 255

Note:

127 - Loop back function of a network.

Class D - is for multicast.

Class E - reserved for future or experimental purposes.

 

*Typical home networks use IP addresses that start with 192.168. IP address such as

192.168.1.1 or 192.168.2.1