...a subnet with 8 bits set to 1, you would use the following formula:
```
Subnet Mask = 2^(32-8) - 1
```
```
Subnet Mask = 2^(24) - 1
```
```
Subnet Mask = 255.255.255.0
```
Here are 5 hashtags that you can use for this article:
* #SubNetmask
* #NetWorking
* #ipaddress
* #subnetting
* #Cisco