Book Image

Implementing Microsoft Azure Architect Technologies: AZ-303 Exam Prep and Beyond - Second Edition

By : Brett Hargreaves, Sjoukje Zaal
Book Image

Implementing Microsoft Azure Architect Technologies: AZ-303 Exam Prep and Beyond - Second Edition

By: Brett Hargreaves, Sjoukje Zaal

Overview of this book

From designing solutions on Azure to configuring and managing virtual networks, the AZ-303 certification validates your knowledge and skills for all this and much more. Whether you want to take the certification exam or gain hands-on experience in administering, developing, and architecting Azure solutions, this study guide will help you get started. Divided into four modules, this book systematically takes you through the wide range of concepts and features covered in the AZ-303 exam. The first module demonstrates how to implement and monitor infrastructure. You'll develop the skills required to deploy and manage core Azure components such as virtual machines, networking, storage, and Active Directory (AD). As you progress, you'll build on that knowledge and learn how to create resilient and secure applications before moving on to working with web apps, functions, and containers. The final module will get you up to speed with data platforms such as SQL and Cosmos DB, including how to configure the different high availability options. Finally, you'll solve mock tests and assess yourself with the answers provided to get ready to take the exam with confidence. By the end of this book, you'll have learned the concepts and techniques you need to know to prepare for the AZ-303 exam and design effective solutions on Microsoft Azure.
Table of Contents (25 chapters)
1
Section 1: Implement and Monitor Azure Infrastructure
10
Section 2: Implement Management and Security Solutions
14
Section 3: Implement Solutions for Apps
18
Section 4: Implement and Manage Data Platforms
21
Chapter 17: Mock Exam Questions
22
Chapter 18: Mock Exam Answers

Understanding load balancing options

Many PaaS options in Azure, such as Web Apps and Functions, automatically scale as demand increases (and within limits you set). For this to function, Azure places services such as these behind a load balancer in order to distribute loads between them and redirect traffic from unhealthy nodes to healthy ones.

There are times when either a load balancer is not included, such as with VMs, or when you want to provide additional functionality not provided by the standard load balancers, such as the ability to balance between regions. In these cases, we have the option to build and configure our own load balancers. There are a number of options you can choose from, each providing their own individual capabilities depending on your requirements.

Tip

Although we have stated that VMs require a load balancer if you wish to distribute loads between one or more VMs, when you create a VM scale set, Azure creates and manages a load balancer for you...