IP ADDRESS & SUBNETTING

IP ADDRESS-
                       1. NETWORK LAYER ADDRESS ARE 32  BITS LONG
                     
                        2.THE ARE PRESENTED AS FOUR OCTCTS IN DOTTED DECIMAL FORMAT
                          3.THE IP ADDRESS HAS TWO COMPONENTS  NETWORK ID AND HOST ID 
                          

Class A-   1 To 126    ( 127 loop act adapter)
Class B-   128 To 191 (192 loop act adapter)
Class C-   193 To 223 
Class D- 225  To  255

LSB- LEAST SIGNIFICATION BIT




MSB-MOST SIGNIFICATION BIT




LOOP ACT ADAPTER-LAN CARD                                                                                TESTING

IP ADDRESS 2 TYPE
                             1.IPV4  (32 BIT)

                                                      2.IPV6    (128 BIT)
  

TYPE OF IP ADDRESS

IP ADDRESS-
                       1. NETWORK ADDRESS
 2.HOST ADDRESS


                         

3.PROXY SERVER

1.ISOLUTS INTERNAL NETWORK COMPUTERS FROM THE INTERNET


2.THE USER FIRST ACCESS THE INTERNET AND RETRIEVES THE REQUESTED WEB PAGE OR DOCUMENT THE USER THEN GETS A COPY OF THAT PAGE FROM THE PROXY SERVER

2 GATEWAY

1.CONNECT NETWORK WITH DIFFRENT PROTOCOL LIKE TCP/IP NETWORK AND IPX/SPX NETWORK

2.ROUTERS AND GATEWAYS OFTEN REFER TO THE SAME DEVICE