explain about IP addressing and subnet masking?

Answer 1

IP addressing is like number of your house so that the mail man knows where to send the mail without it then it would take forever to locate your house. Same thing in On IP addressing, in this case it's the packets that sends to your particular IP address.

A subnet mask is masking the real IP address. Typically, a subnet may represent all the machines at one geographic location, in one building, or on the same local area network. Having an organization's network divided into subnets allows it to be connected to the Internet with a single shared network address.

Answer 2

IP addresses are 32 bit binary numbers. (For version 4, the most common... V6 will have a larger number!)

For simplicity, it is displayed as 4 decimal numbers separated by dots, each decimal going from 0 thru 255.

These numbers have special meanings in a fairly arcane code that relates to "class"... representing how many addresses can be directly accessed. See the reference below for more info about class A, B, C addresses...

The subnet mask tells the software whether another address is on the same network and can be accessed without rerouting. The subnet mask is "logically or'd" with the "from" address and the "to" address to determine whether access will need to go thru another router. Example:

Let's say MY address is 192.168.0.32
and I want to get to 192.168.0.100
If my subnet mask is 255.255.255.0
then I would be OK, since the "255" (in binary: 11111111) means the corresponding from/to numbers MUST match, and the "0" (in binary 00000000) means the numbers MAY BE DIFFERENT!
So in the example above, 256 addresses (all with the 4th decimal position different) can be directly addressed... any other address needs to pass thru another gateway or router for forwarding to the destination.

Another example: A mask of 255.255.255.240 would only allow the last number to be from 0-15, with only 16 addresses on the same network...

A lot to explain in a small answer space!
See the larger article below for more info on this topic!

Answer 3

IP address shows for all internet connection. You have a Fix IP or Dynamic. Fix normally is provided with cable. Dynamic IP's normally change every so often when you log on.

Subnet masking is when you hide your ip with a IP that is pointed to another location. Softwares offer this like GHOST Software they enable you to hide your IP to deter tracking etc.