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

Exercise 8.2 – Creating a database subnet group

Before you can launch an RDS database in your VPC, you need to define a DB subnet group. A DB subnet group is a collection of two or more subnets within the VPC where you want to deploy your database instance. When creating your DB subnet group, at least two subnets must be selected in the VPC that are associated with two separate Availability Zones in a Region. Amazon RDS uses the subnet group's IP address CIDR block to assign your RDS database instance(s) with an IP address.

Amazon RDS can then deploy the database instance on one of your chosen subnets that is part of the group. In the case of a Multi-AZ deployment, the master copy will be deployed in one subnet in a particular Availability Zone, while the standby copy will be deployed in another subnet that is hosted within another Availability Zone.

Note that the subnets in a DB subnet group are either public or private, but they cannot be a mix of both public...