Book Image

AWS Certified Database – Specialty (DBS-C01) Certification Guide

By : Kate Gawron
5 (1)
Book Image

AWS Certified Database – Specialty (DBS-C01) Certification Guide

5 (1)
By: Kate Gawron

Overview of this book

The AWS Certified Database – Specialty certification is one of the most challenging AWS certifications. It validates your comprehensive understanding of databases, including the concepts of design, migration, deployment, access, maintenance, automation, monitoring, security, and troubleshooting. With this guide, you'll understand how to use various AWS databases, such as Aurora Serverless and Global Database, and even services such as Redshift and Neptune. You’ll start with an introduction to the AWS databases, and then delve into workload-specific database design. As you advance through the chapters, you'll learn about migrating and deploying the databases, along with database security techniques such as encryption, auditing, and access controls. This AWS book will also cover monitoring, troubleshooting, and disaster recovery techniques, before testing all the knowledge you've gained throughout the book with the help of mock tests. By the end of this book, you'll have covered everything you need to pass the DBS-C01 AWS certification exam and have a handy, on-the-job desk reference guide.
Table of Contents (24 chapters)
1
Part 1: Introduction to Databases on AWS
Free Chapter
2
Chapter 1: AWS Certified Database – Specialty Overview
5
Part 2: Workload-Specific Database Design
12
Part 3: Deployment and Migration and Database Security
16
Part 4: Monitoring and Optimization
20
Part 5: Assessment
21
Chapter 16: Exam Practice

Chapter 4

  1. 3

Moving from RDS to EC2 doesn't solve the storage problem. RDS also has autoscaling.

Using S3 might reduce the incoming writes, but it is very complex, therefore, this isn't correct.

Enabling autoscaling storage is the easiest solution, and is the correct answer.

A read replica will not help with full storage, so this cannot be correct.

  1. 2

If you cannot connect, then the account details don't matter at this stage, so this isn't correct.

The inbound rules are likely blocking any connections to the RDS instance from your EC2, so this is the correct answer.

The outbound rules are set to allow all outbound traffic by default, so this is unlikely to be the cause.

As you are connecting from within your VPC, you will not need a NAT to access it, so this is incorrect.

  1. 1

Primary is upgraded first, so this is the correct answer.

There is no downtime during an upgrade, so this is not correct.

The standby...