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An IP address is a unique 32-bit binary code assigned for each computer. The IP address contains network and host parts. The network prefix describes a network while the host bits define a particular computer within this network. The subnet mask is a configuration parameter that helps to discriminate the network and host bits by assigning them "1" and "0" respectively. A broadcast address is a special IP address that allows to send a signal to all computers in a subnet. Example: Calculate the broadcast IP address if a computer in a network has the IP address of 192.35.128.93 and the network mask is 255.255.255.224.

Skill level:
Easy

## Instructions

1. 1

Convert the computer IP address to the binary form by completing Section 2.

In our example, the binary form of 192.35.128.93 is

11000000.00100011.10000000.01011101.

2. 2

Convert the subnet mask to the binary form by completing Section 2.

In our example, the binary form of 255.255.255.224 is

11111111.11111111.11111111.11100000.

3. 3

Determine host bits in the computer IP address that are represented as zeros in the network mask. In our example, the last 5 bits in the network mask are zeros, hence the last 5 digits are the host bits.

4. 4

Substitute all host bits in the computer IP by “1” to obtain the broadcast address in the binary form.

5. 5

Convert the binary broadcast IP address to the decimal-dot form by completing Section 3.

1. 1

Navigate to the IP Converter using the link in "Additional Resources," below.

2. 2

Type the IP address in the field “Enter IP address” and click “Submit.”

3. 3

1. 1

Navigate to the IP Converter using the link in "Additional Resources," below.

2. 2

Type the binary IP address in the field "Enter Binary Address” and click “Submit.”

3. 3

Read the IP address in the decimal-dot form next to “IPv4 Conversion.”

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