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 14

  1. 1 and 3

Changing the times the backups run to outside peak hours is a good solution.

Increasing the instance class may help but it will not be cost-effective.

Using a read replica for backups will reduce the load on the primary node and is a good solution.

Increasing the number of shards will not help.

Increasing the storage will not help.

Changing to provisioned IOPS will not help.

  1. 1

Creating an AWS Backup policy for 90 days and applying it to all RDS instances is the simplest solution.

Modifying each RDS instance with 90-day backup retention will work but it is not the best solution, as new instances may get missed and it is a manual effort.

Using Lambda is a very complicated solution.

There is no such feature on RDS to push backups to Glacier.

  1. 2

A read replica in a secondary region is a very expensive solution.

AWS Backups can store backups to another region, so this is the best solution.

Manually...