Many industries require you to show compliance in your cloud environment as it relates to industrial controls.
Using and understanding the shared security model will help you and your auditors understand which controls you, as the customer, are responsible for and which ones are the responsibility of AWS, the cloud provider.
Suppose your auditor is requesting information or evidence for something that AWS manages. In that case, you can refer the auditor to the specific shared responsibility model for the service to show how the cloud service provider maintains control of that particular standard.
This chapter discussed the three shared security models used for AWS services: infrastructure, container, and abstract services. You learned that, from a security perspective and depending on the service you are using, your responsibility as a customer and that of AWS as the cloud provider can change.
Understanding these models and being able to differentiate between them will be beneficial when you implement your security strategies across your solutions as it means you will clearly understand where your responsibility ends and AWS’s responsibility begins. This will help ensure that you do not leave any vulnerabilities across your AWS infrastructure within your accounts.
You also examined how the shared security model can help you by clarifying which items you and your organization are responsible for when it comes to compliance and audits for your business.
Chapter 2, Fundamental AWS Services, will provide a brief overview of many of the services used in the AWS ecosystem that are not particularly focused on security. Even the services that do not have a specific security focus often play a significant role in the solutions we build for our systems and customers. The AWS Security Competency exam expects you to have a base knowledge of the services offered and how you can fortify them as a security engineer or professional.
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 is why working on these skills early on in your learning journey is key.
Chapter review questions are designed to improve your test-taking skills progressively with each chapter you learn and review your understanding of key concepts in the chapter at the same time. You’ll find these at the end of each chapter.
For the first three attempts, don’t worry about the time limit.
ATTEMPT 1
The first time, aim for at least 40%. Look at the answers you got wrong and read the relevant sections in the chapter again to fix your learning gaps.
ATTEMPT 2
The second time, aim for at least 60%. Look at the answers you got wrong and read the relevant sections in the chapter again to fix any remaining learning gaps.
ATTEMPT 3
The third time, aim for at least 75%. Once you score 75% or more, you start working on your timing.
Tip
You may take more than three attempts to reach 75%. That’s okay. Just review the relevant sections in the chapter till you get there.
Target: Your aim is to keep the score the same while trying to answer these questions as quickly as possible. Here’s an example of how your next attempts should look like:
| Attempt | Score | Time Taken |
| Attempt 5 | 77% | 21 mins 30 seconds |
| Attempt 6 | 78% | 18 mins 34 seconds |
| Attempt 7 | 76% | 14 mins 44 seconds |
Table 1.1: Sample timing practice drills on the online platform
Note
The time limits shown in the above table are just examples. Set your own time limits with each attempt based on the time limit of the quiz on the website.
With each new attempt, your score should stay above 75% while your time taken to complete should decrease. Repeat as many attempts as you want till you feel confident dealing with the time pressure.
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