Explain the different classes of IP addressing.

Explain the different classes of IP addressing.
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1 Answer

Answer :

Class A Addressing:

1. First byte specifies the network portion.

2. Remaining bytes specify the host portion.

3. The highest order bit of the network byte is always 0.

4. Network values of 0 and 127 are reserved there are 126 class A networks.

5. There are more than 16 million host values for each class A network.

Class B Addressing

1. The first two byte specifies the network portion.

2. The last two bytes specify the host portion.

3. The highest order bit 6 and 7 of the network portion are 10.

4. There are more than 16 thousand class B network.

5. There are 65 thousand nodes in each class B network.

Class C Addressing

1. The first Three byte specifies the network portion.

2. The last bytes specify the host portion.

3. The highest order bit 5, 6 and 7 of the network portion are 110.

4. There are more than 2 million class C network.

5. There are 254 nodes in each class C network.

Class D Addressing

1. Class D address defines a group ID and used for multicasting

2. Internet authorities have designated some multicast address to specific groups.

Class E Addressing:

Fig show address format of class E addressing. This format begins with 1110 that show a it is reversed for the future use.

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