After long time I give some time to share my knowledge.
This time I will share IP Addressing and their classes with you.
– There are 4 octets decimal dotted format in IPv4. like 192.168.1.1
– This 4 octets in binary form : 00000000.00000000.00000000.00000000.
– There are five classes in IPv4 Addressing.
1) Class A 2) Class B 3) Class C 4) Class D 5) Class E.
– Class A : 0-126 (remember 127 reserved for loopback), Default Mask : 255.0.0.0, N.H.H.H, 11111111.00000000.00000000.00000000, CIDR : /8.
– Class B : 128-191, Default Mask : 255.255.0.0, N.N.H.H, 11111111.11111111.00000000.00000000, CIDR : /16.
– Class C : 192-223, Default Mask : 255.255.255.0, N.N.N.H, 11111111.11111111.11111111.00000000, CIDR : /24.
– Class D : 225-239 (224 is reserved for Multicast Addresses), This Class Addresses we can not use.
– Class E : 240-254, This Class Addresses also we can not use.
Best of Luck
–
amirkhalak 