IPV4 address - Example,Format,Definition - Networking

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• Nirja Shah   -Posted on 25 Nov 15
  - Internet Protocol hierarchy contains several classes of IP Addresses which can be used efficiently in various situations as per the requirement of hosts per network.
  
  - The IPv4 Addressing system has a division of five classes of the IP Addresses. All these classes are identified by the first octet of IP Address.
  
  - It is the responsibility of the Internet Corporation for Assigned Names and Numbers for assigning IP addresses.
  
  - The first octet referred here is the left most of all. The octets numbered as follows depicting dotted decimal notation of IP Address:
  
  11000000 (first octet).10101000 (second octet).00000001 (third octet).10011000 (fourth octet)
  192.168.1.152
  
  The number of networks and the number of hosts per class can be derived by this formula:
  Number of networks = 2^network_bits
  Number of Hosts/Network = 2^host_bits-2
  
  - While calculating the hosts the IP addresses, two IP addresses are decreased because they cannot be assigned to hosts, i.e. the first IP of a network is network number and the last IP is reserved for Broadcast IP.

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