The knowledge that is required by readers in order to benefit from this book is as follows:

• A basic understanding of general cloud computing terminology and
  environments
• A basic understanding of networking, the OSI layers, and the IP stack
• A basic understanding of network function devices, such as routers, firewalls, load balancers, and content delivery networks
• A basic understanding of virtualization and server operating systems
• A basic understanding of user and security management
• A basic understanding of storage concepts (for example, object storage, block
  storage, and file storage)
• A basic understanding of database services
• A basic understanding of messaging in applications
• A basic understanding of serverless computing
• A basic understanding of automation and orchestration

In addition, a more in-depth understanding of the following topics will be beneficial:

• Designing applications for high availability and resilience
• Operating system scripting languages
• Database structures
• The JSON data format
• Programming languages and application design

You can download the example code files for this book from your account at www.packt.com. If you purchased this book elsewhere, you can visit www.packt.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packt.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/AWS-Certified-Advanced-Networking-Specialty-Exam-Guide. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it here: http://www.packtpub.com/sites/default/files/downloads/9781789952315_ColorImages.pdf.

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "To perform this, we can add WaitCondition to CreationPolicy."

A block of code is set as follows:

{
 "Transform" : {
 "Name" : "AWS::Include",
 "Parameters" : {
 "Location" : "s3://cftemplatebucket/simple-network-stack.json"
 }
 }

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Open the CloudFormation console and click on Create stack."