wht re the classes of network IP addresses do we have?And how do u identify tht an Ip address is or tht class?

Answer 1

for most home and office are 192.168.x.x subnetmask 255.255.255.x

(static ip example)
comp 1 = 192.168.0.1 255.255.255.0
comp 2 = 192.168.0.2 255.255.255.0, etc...

most common autoconfigure (dynamic) but if need more control static ip

Answer 2

There are three (main) Classes of IP address: A,B, and C (real original)

These has to do with how much of the IP address is host and how much is node. Meaning, with a class C (the most common) network, the first three numbers of the IP address tell you what network it is on (host). The last number is the individual PC (node).

So if the address was 192.168.10.100, then 192.168.10 would be the address of the host (or network), while 100 would be the individual PC in that network. Because the numbers in an IP address only go from 0 to 255, you can only have 256 computers on a Class C network.

With a Class B network, 192.168 would be the network's IP and 10.100 the individual PC. With a class B netowrk you can have 256x256 or 65,536 PC in the network.

With a Class A, only the 192 is the network address, and 168.10.100 the individual PC. You could have onver 16.7 million PCs on that network.

The subnet mask is what tells the computer whether the address is a Class A,B, or C. 255.0.0.0 for the mask would be a class A network, 255.255.0.0 would be class B, and 255.255.255.0 class C.

Because you have to pay for each IP address you network uses, you would not want to pay for 16.7 million addresses if you only have 200 PCs. That is why the classes exist.

Answer 3

Class A: First Octet Range: 1-126, Network Bits: 8, Possible Networks: 126, Host Bits: 24, No. of Hosts per Network: 16,777,216
Class B: First Octet Range: 128-191, Network Bits: 16, Possible Networks: 16,384, Host Bits: 16, No. of Hosts per Network: 65,536
Class C: First Octet Range: 192-223, Network Bits: 24, Possible Networks: 2,097,152, Host Bits: 8, No. of Hosts per Network: 256
Class D: Reserved for multicasts
Class E: Reserved for research

Classes A, B, and C are most common. The IP address class that you have is decided by the subnets you use. A subnet of 255.255.255.0, for example, would put you on a Class C network. For a home network, you are most likely using a Class C. Your home IP address, from an ISP, for instance, is most likely a class A, where millions of hosts are necessary.

Hope this helps, Cheers