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

System development methodologies

A system development methodology is a structure that organizations use for the design, development, and implementation of new systems. Different methodologies are available, with each of them having different characteristics. In this section, we will understand the following concepts:

  • SDLC models
  • SDLC phases
  • Software development methods

SDLC models

Three widely used SDLC models are the traditional waterfall, the V-shaped model, and the iterative model. Let's have a look at each of them in detail.

Traditional waterfall

This model aims to ensure that mistakes are identified at an early stage and not during final acceptance testing. The significant points of this method are given below:

  • The waterfall method is the most commonly adopted approach for developing business applications.
  • It works well when requirements are well defined and do not undergo frequent changes.
  • This approach is useful when prototypes are required to understand the design and...