# Find the class of the following ip addresses The remaining bytes, 4.

## How can we identify the class of the IP address? Whether it is class A, class B or class C?

Use of the remaining three bytes is left to the discretion of the owner of the network number. Only class A networks can exist. Each one of these numbers can accommodate up to 16,, hosts. A class B network number uses 16 bits for the network number and 16 bits for host numbers. The first byte of a class B network number is in the range In the number The last two bytes, Figure graphically illustrates a class B address. Class B is typically assigned to organizations with many hosts on their networks.

Class C network numbers use 24 bits for the network number and 8 bits for host numbers. Class C network numbers are appropriate for networks with few hosts--the maximum being A class C network number occupies the first three bytes of an IP address. Only the fourth byte is assigned at the discretion of the network owners. Figure graphically represents the bytes in a class C address. The first byte of a class C network number covers the range The second and third each cover the range 1- A typical class C address might be The first three bytes, The final byte in this example, 5, is the host number.

If your organization has been assigned more than one network number, or uses subnets, appoint a centralized authority within your organization to assign network numbers. That authority should maintain control of a pool of assigned network numbers, assigning network, subnet, and host numbers as required. IP is the most popular logical addressing protocol. Byte: 8 bits.

This term is interchangeable with octet. Octet: 8 bits.

18. How to Find the Subnet Number of an IP Address

This term is interchangeable with byte. Network address: Address with all host bits turned off. Broadcast address: Address with all host bits turned on. To fully understand IP addressing, you must be familiar with binary-to-decimal conversion. To find the decimal equivalent of a binary number, you must add the binary values. Binary numbers use eight bits to create a byte.

Each bit in the byte has a certain value, and if a bit is turned on assigned a value of 1 , then the byte takes on that decimal value. Each bit has a value that starts at 1 and doubles in value from right to left. Table 1 shows an example of converting a byte to a decimal value.

Table 1 64 32 16 8 4 2 1 Decimal value 0 0 0 1 1 0 1 0 Binary number.

This table shows an example of converting a byte to a decimal. Table 2 64 32 16 8 4 2 1 Decimal value 0 1 1 0 1 0 0 0 Binary number.

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