How Does Data Know Where To Go ?

IP Address

Mostly every devices have Internet Protocol (IP) Address

an example of IPv4 address is 192.168.1.1

There are actually 4 octats in an IP address, one octats is 8 bits, so an IP address is actually 32 bits.

Every IP address is broken down into two parts by subnet mask

they are Network ID and Host ID

Network ID → 192.168.1

It acts just like our street, city , state name

Host ID → 1

It acts just like our house number

Subnet mask is a group of four numbers that defines a computers network

All 255's in a subnet mask collectively refers to the network portion and where as the 0's refers to the host porton