Book Image

CISA – Certified Information Systems Auditor Study Guide

By : Hemang Doshi
Book Image

CISA – Certified Information Systems Auditor Study Guide

By: Hemang Doshi

Overview of this book

Are you looking to prepare for the CISA exam and understand the roles and responsibilities of an information systems (IS) auditor? The CISA - Certified Information Systems Auditor Study Guide is here to help you get started with CISA exam prep. This book covers all the five CISA domains in detail to help you pass the exam. You’ll start by getting up and running with the practical aspects of an information systems audit. The book then shows you how to govern and manage IT, before getting you up to speed with acquiring information systems. As you progress, you’ll gain knowledge of information systems operations and understand how to maintain business resilience, which will help you tackle various real-world business problems. Finally, you’ll be able to assist your organization in effectively protecting and controlling information systems with IT audit standards. By the end of this CISA book, you'll not only have covered the essential concepts and techniques you need to know to pass the CISA certification exam but also have the ability to apply them in the real world.
Table of Contents (19 chapters)
1
Section 1: Information System Auditing Process
4
Section 2: Governance and Management of IT
7
Section 3: Information Systems Acquisition, Development, and Implementation
10
Section 4: Information System Operations and Business Resilience
13
Section 5: Protection of Information Assets

Data backup and restoration

In information technology, a backup, or data backup, is a copy of computer data taken and generally stored in a remote location so that it may be used to restore the original after a data loss event. Data loss can be the result of any number of internal or external factors, including computer viruses, hardware failure, file corruption caused by fire, natural calamities, and hacking attacks.

An organization should have a documented backup policy in place that clearly identifies the type of data and information for which making a backup is mandatory.

Let's now have a look at the different types of backup strategies.

Types of backup strategy

The backup policy should be approved by senior management. It should have clear and specific instructions regarding the organization's backup and retention procedure. The CISA Review Manual (CRM) covers the following types of backup strategy:

  • Backup of the full database
  • Backup of new data
  • Differential backup
  • Incremental...