What is the subnet mask for class C addresses in the computer network?

This article is about which subnet mask is used for class C addresses in computer networks. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

The subnet mask for a Class C address is [255.255.255.0]. The subnet mask also consists of 32 bits, which defines how many of the 32 bits of the lP address are used to identify the network, so the subnet mask cannot exist independently of the lP address.

This article operating environment: windows10 system, thinkpad T480 computer.

The subnet mask also consists of 32 bits, which defines how many of the 32 bits of the lP address are used to identify the network, so the subnet mask cannot exist independently of the lP address. According to the TCP/IP protocol, the bit of the corresponding network number in the subnet mask is 1 and the bit of the host number is 0. So according to the default classification of lP addresses, the subnet masks for class A, B, and C addresses are:

Class An address: 255.0.0.0.

Class B address: 255.255.0.0.

Class C address: 255.255.255.0.

In order to determine whether the two hosts are on the same network, you can do a binary sum operation between the lP address and its corresponding subnet mask, and if the result is the same, it is the same network and has the same network address.

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