March 2009
Beginner to intermediate
144 pages
3h 13m
English
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Practical Netmasks
The end result of netmasks being in binary is that IP addresses are issued in blocks that are multiples of two. If you have 5 bits to play with, you'll have 32 (2 x 2 x 2 x 2 x 2 = 32) IP addresses on your network, and your netmask will be a /27 (32 – 5 = 27). If you have 8 bits for your hosts, you have (28) or 256 IP addresses. If you're told that you have 55 IP addresses, you're either sharing a network with other people or you need to learn what your network administrator is drinking and get him to share.
It's not uncommon to see a host IP with ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.