Currently doing my Google certifications and struggling with the concept of subnet masking. I understand how it works in terms of identifying the network and host ids, what I don’t understand is why it is necessary.
If the octates that identify the network I’d need the ip to be interpreted, why is the the ip address not just used? They use the same number of bits, so how does it extend the range of available ip addresses?
In: Technology
Lets say you have a small business, and you have four general categories of stuff that need networking, but you don’t want stuff from one category to be able to talk to the other cagegories. For example, VOIP phones, Security cameras, the business’s own computers, and public facing wifi. Subnets let you do this. Instead of 255 addresses you can break it up into blocks of 64, and devices will ignore anything coming from outside their block of 64 addresses.
Latest Answers