Home  >  Article  >  What is the subnet mask for a Class C address?

What is the subnet mask for a Class C address?

王林
王林Original
2021-05-31 13:51:3034533browse

The subnet mask of Class C address is [255.255.255.0]. The subnet mask is also composed of a 32-bit binary number, which defines how many of the 32 bits of the IP address are used to identify the network, so the subnet mask cannot exist independently of the IP address.

What is the subnet mask for a Class C address?

#The operating environment of this article: windows10 system, thinkpad t480 computer.

The subnet mask is also composed of a 32-bit binary number, which defines how many of the 32 bits of the IP address are used to identify the network, so the subnet mask cannot exist independently of the IP address. The TCP/IP protocol stipulates that the corresponding network number bit in the subnet mask is 1 and the host number bit is 0. Therefore, according to the default classification of IP addresses, the subnet masks of class A, B, and C addresses are:

Class A address: 255.0.0.0.

Class B address: 255.255.0.0.

Class C address: 255.255.255.0.

In order to determine whether two hosts are on the same network, you can perform a binary bit AND operation on the IP address and its corresponding subnet mask. If the result is the same, it means that they are on the same network and have the same network address.

Free learning video sharing: Programming video

The above is the detailed content of What is the subnet mask for a Class C address?. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn