Book Image

AWS Certified Cloud Practitioner Exam Guide

By : Rajesh Daswani
3 (1)
Book Image

AWS Certified Cloud Practitioner Exam Guide

3 (1)
By: Rajesh Daswani

Overview of this book

Amazon Web Services is the largest cloud computing service provider in the world. Its foundational certification, AWS Certified Cloud Practitioner (CLF-C01), is the first step to fast-tracking your career in cloud computing. This certification will add value even to those in non-IT roles, including professionals from sales, legal, and finance who may be working with cloud computing or AWS projects. If you are a seasoned IT professional, this certification will make it easier for you to prepare for more technical certifications to progress up the AWS ladder and improve your career prospects. The book is divided into four parts. The first part focuses on the fundamentals of cloud computing and the AWS global infrastructure. The second part examines key AWS technology services, including compute, network, storage, and database services. The third part covers AWS security, the shared responsibility model, and several security tools. In the final part, you'll study the fundamentals of cloud economics and AWS pricing models and billing practices. Complete with exercises that highlight best practices for designing solutions, detailed use cases for each of the AWS services, quizzes, and two complete practice tests, this CLF-C01 exam study guide will help you gain the knowledge and hands-on experience necessary to ace the AWS Certified Cloud Practitioner exam.
Table of Contents (23 chapters)
1
Section 1: Cloud Concepts
5
Section 2: AWS Technologies
16
Section 3: AWS Security
18
Section 4: Billing and Pricing
20
Chapter 16: Mock Tests

Chapter 9: High Availability and Elasticity on AWS

Most applications follow a design pattern that comprises several layers—such as the network layer, the compute layer, and the storage and database layers. We call this a multi-tier application. So, for example, you can have a three-tier application stack comprising a web services layer that offers frontend web interface access, an application layer where perhaps all data processing happens, and a backend database layer to store and manage data.

In this chapter, we start to bring together the various core Amazon Web Services (AWS) services we have learned about so far to design and architect a complete end-to-end (E2E) solution. Furthermore, in previous chapters, we have only deployed single resource instances of various AWS services—for example, a single Elastic Compute Cloud (EC2) instance to offer compute capability, or as in the previous chapter, where we deployed a single Amazon Relational Database Service (RDS...