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Computer Networking

Published at

2/1/2022

We all know Computer Networking is all about creating communication between computers to share resources.

Let's see what google definition of computer networking is

A computer network is a set of computers sharing resources located on or provided by network nodes.

So here network nodes means computers, switches, routers etc..
Let's see what are switches and routers in soon.

So to get our network establish, we have to make sure of having some steps

Connection between computers (using wired/wireless).
Unique IP Address to computers.
Same Network Address for basic communication (we can also have different network addresses but we have to use router to communicate, let's see that in future posts).

We all know about creating connection between two computers using WIFI / Ethernet Lan
So Let's see about IP Address
So IP address is used to uniquely identify the computer in a
network. For example we can imagine our phone numbers as IP
addresses which are unique.
What is IP address format?
Actually an IP address is any positive integer having 4 bytes of
size.
So for example 100 is an valid IP address and 212021241 is also
an valid IP address.
But In real life we won't see IP addresses as 212021241 and 100
because we use some format which is easy to remember our IP
addresses.
So let's see how 212021241 is formatted into an IP address
format.
convert 212021241 into 32 bit binary number
00001100101000110010111111111001
Here is the binary representation.
Let's make it four parts
00001100
10100011
00101111
11111001
Convert each part into decimal
00001100 -> 12
10100011 -> 163
00101111 -> 47
11111001 -> 249
so we will use 12.163.47.249 instead of 212021241 this large
number.
so what is the proof right ?
open your chrome browser and type http://212021241 in search bar