Understanding Your AWS Environment through AWS Config With the number of services rising each year in AWS, it can be difficult to understand what resources might be running within your environment. How can you keep up with what instances you have running and where, what they are running, and whether the resources are still needed? […]

Designing secure workloads is essential to protect your data and systems and to be able to respond to security threats in a timely and successful manner. When you design a new solution on Amazon Web Services (AWS), security is the first topic you want to focus on. Whether the application that you design is a […]

Important note You will learn about these algorithms, along with the appropriate details, in the later chapters of this book. For instance, you can look at entropy and information gain as two types of metrics used by decision trees to check feature importance. Knowing the predictive power of each feature helps the algorithm define the […]

Moving through the incident response domain, you have now come to the next critical service that you need to know about, one that helps to show you what has changed after an incident has occurred—AWS Config. AWS Config and its configuration recorder can help you take a real-time inventory of most of the resources in […]

Review Questions The following questions are designed to test your understanding of this chapter’s material. For more information on how to obtain additional questions, please see this book’s introduction.

High Availability with Elastic Load Balancers and Route 53 This section covers the following official AWS Certified SysOps Administrator – Associate (SOA-C02) exam domains: Domain 2: Reliability and Business Continuity Domain 5: Networking and Content Delivery CramSaver If you can correctly answer these questions before going through this section, save time by skimming the Exam […]

Setting Up Notifications The last piece of the puzzle is enabling and configuring notifications for your billing alerts and alarms. This is important for a number of reasons, such as cost management, security, and creating automated workflows. This can also be achieved with a few simple clicks from the AWS Management Console: That’s pretty much […]

Dealing with numerical features In terms of numerical features (discrete and continuous), you can think of transformations that rely on the training data and others that rely purely on the (individual) observation being transformed. Those who rely on the training data will use the training set to learn the necessary parameters during fit, and then […]

Further Reading For additional information on and a more comprehensive foundation to AWS security, please look at the following resources: Exam Readiness Drill – Chapter Review Questions Apart from a solid understanding of key concepts, being able to think quickly under time pressure is a skill that will help you ace your certification exam. That […]

Exam Essentials Know the DNS resolution steps. Understand the resolution steps that DNS takes to resolve a URL that a user types in a browser to resolve the DNS name to an IP address. Know what a zone is. A zone is a subset of your domain records that contains your DNS records such as […]