Identifying Ip(Class A, B, C,D)

Classes A–D Review
•  Network hosts can be assigned a Class address of Class A–D
•  These are simplt a grouping of addresses that indicate host and address
assignment
•  Class A has the network number in the first byte of the address and the last
three bytes are assigned to the host.
•  Class B has the network number in the first two bytes of the address and the
last two bytes are assigned to the host.
•  Class C has the network number in the first three bytes of the address and
the host is assigned to the last byte.
•  Class D is a multicast address.
•  A is the first letter of the alphabet and therefore the network numdber is
assigned the first byte.
•  B is the second letter and therefore has the network number assigned to the
first two byrtes.
•  Class C is the third letter and therefore has thew network number assigned
to the first three bytes.
The classes are
Class A: 0–127
Class B: 128–191
Class C: 192–223
Class D: 223–239
Reserved: 240–254
Private Ip address:

10.0.0.0 – 10.255.255.255
Addresses: 16,777,216

172.16.0.0 – 172.31.255.255
Addresses: 1,048,576

192.168.0.0 – 192.168.255.255
Addresses: 65,536

 

In Class D: 224.0.0.0 – 224.255.255.255 is multicast.

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