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It is used to tell the machine who it can talk to without the assistance of a gateway.

192.168.1.1/24 or 192.168.1.1 255.255.255.0

Can talk to anyone with the IP of 192.168.1.2-255 withoutthe use of a gateway.

Any requested addressed to someone outside of that gateway will automatically be sent to the gateway for processing.

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Q: What is the subnet mask used for?
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Related questions

What subnet mask is used for 192.168.12.526?

It depends on whether you are subnetting or not. If not, the default subnet mask would be 255.255.255.0


What is a subnet mass number?

The correct term is subnet mask instead of subnet mass. A subnet mask separates an IP address into the host address and the network address. It is a 32-bit number that can mask an IP address.


What is Subnet mask for ip address 64.100.19.94?

There isn't just a single subnet mask that could be used for that address. The default subnet mask would be 255.0.0.0, but there could be others if the network is subnetted.


What do the IP address and subnet mask display when used together?

Because each IP defines certain subnet mask.


How do you change subnet mask?

The Method used for changing your subnet mask would be based on what platform your using and its installed operating system.


Does ipv6 require a subnet mask?

It does not require a subnet mask.


What class has subnet mask 255.255.255.0?

The address you gave is not an IP address; it has the appearance of a subnet mask. It could be a class A or class B subnet mask.


2 different subnet masks can be used on 1 subnet?

No, all subnets must use the same subnet mask


What class has subnet mask 225.225.225.0?

If this is a default subnet mask, then it would be a class C subnet mask. If you are subnetting a network and this is not the default subnet mask, then it could be either a class A or class B.


Defference bw a default subnet mask and a custom subnet mask?

The default subnet mask has a standard size. The custom subnet mask allows you to make subnets that are smaller or larger than the default.


How can you change from a subnet mask of 255.255.224.0 to a subnet mask of 255.255.240.0?

2 given subnets


What is the default subnet mask for the 198.25.4.129 address?

255.255.255.0