Classes and Hosting of IP addresses.

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There are five classes of IP addresses namely A, B, C, D and E. How can we find which IP address belongs to a such particular class. How many hosts are possible in each class?

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Answered By 0 points N/A #81113

Classes and Hosting of IP addresses.

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Hi Sarah,

An IP address class is determined based on the decimal values of their first octets. An IP address can start with a decimal value between 1 and 255.
 
Below is the list of the 5 different classes of IP address;
 
Class A: 1.0.0.0 to 127.255.255.255.255 
 
Class B: 128.0.0.0 to 191.255.255.255
 
Class C: 192.0.0.0 to 223.255.255.255
 
Class D: 224.0.0.0 to 239.255.255.255
 
Class E: 240.0.0.0 to 255.255.255.255
 
Remember that you can determine which IP address belongs to a particular class by looking on the first octet of the IP address.
 
Class A, B, and C are used to identify workstations, routers, switches, and other devices. Class D and E are reserved IP addresses for special use. 
 
Below is the list of the number of hosts that supports in every class:
 
Class A IP address class consists of 16, 277, 214 number of host IDs per network ID.
 
Class B IP address class consists of 65, 534 number of host IDs per network ID.
 
Class C IP address class consists of 254 number of host IDs per network ID.
 
Class D IP addresses are reserved for multi cast groups.
 
Class E IP addresses are reserved for future use, or Research and Development Purposes.
 
I hope this will answer your questions.

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