Goalng tests any IP address to achieve the effect of a mask

The main content of this article is to explain "Goalng tests any IP address to achieve the effect of mask". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let the editor take you to learn "Goalng tests any IP address to achieve the effect of a mask".

Subnet mask (Subnet mask), also known as network mask, subnet mask can not exist alone, it must be used in conjunction with IP addresses. It is used to mask part of the IP address to distinguish the network identity from the host identity, and to indicate whether the IP address is on the local area network or on the remote network.

1. Test any IP address

two。 The basic testing steps are shown in the figure

3. Run the program to view the results

4. In this way, my IP address achieves the effect of mask, and you can guess that my IP address (for reference only) subnet is to divide an IP address into two parts: the network address and the host address. The subnet mask is a 32-bit address, which is actually a special IP address.

5. There is also a custom mask that divides a network into several subnets, each using a different network number or subnet number. in fact, we can think of the host number as two parts: the subnet number and the subnet host number.

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