May 2019
Intermediate to advanced
308 pages
8h 5m
English
Content preview from AWS Certified Advanced Networking - Specialty Exam Guide
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Public, elastic, and private IPs
When we use IPv4 networks and have created some resources in a VPC subnet, we will need to make them available on the internet. As we've already mentioned, we can attach an IGW to the subnet and make it public. Once we have spun up some instances in the subnet, we can either attach a public IP address or an Elastic IP address.
Public IPs are sourced from one or more AWS-controlled public IP address pools and are attached to the instance randomly whenever an instance is started. When an instance using a public IP address fails and is recreated or shut down and restarted, it will not maintain the same public IP address.
This is probably the biggest advantage of Elastic IPs. An Elastic IP address is associated ...
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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.