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

Sampling methodology

Sampling is the process of the selection of data from a population. By analyzing the selected samples, characteristics of the full population can be concluded. Sampling is performed when it is not feasible to study the full population due to time and cost constraints. Samples are a subset of the population.

Sampling types

This is a very important topic for the CISA exam perspective. Two to three questions can be expected from this topic. A CISA candidate should have an understanding of the sampling techniques mentioned here:

Sampling Types Description
Statistical sampling
  • This is an objective sampling technique.
  • Also known as non-judgmental sampling.
  • It uses the laws of probability, where each unit has an equal chance of selection.
  • In statistical sampling, the probability of error can be objectively quantified, and hence the detection risk can be reduced.
Non-statistical sampling
  • This is a subjective sampling technique.
  • Also known as judgmental sampling...