Book Image

CISA – Certified Information Systems Auditor Study Guide - Second Edition

By : Hemang Doshi
5 (3)
Book Image

CISA – Certified Information Systems Auditor Study Guide - Second Edition

5 (3)
By: Hemang Doshi

Overview of this book

With the latest updates and revised study material, this second edition of the Certified Information Systems Auditor Study Guide provides an excellent starting point for your CISA certification preparation. The book strengthens your grip on the core concepts through a three-step approach. First, it presents the fundamentals with easy-to-understand theoretical explanations. Next, it provides a list of key aspects that are crucial from the CISA exam perspective, ensuring you focus on important pointers for the exam. Finally, the book makes you an expert in specific topics by engaging you with self-assessment questions designed to align with the exam format, challenging you to apply your knowledge and sharpen your understanding. Moreover, the book comes with lifetime access to supplementary resources on an online platform, including CISA flashcards, practice questions, and valuable exam tips. With unlimited access to the website, you’ll have the flexibility to practice as many times as you desire, maximizing your exam readiness. By the end of this book, you’ll have developed the proficiency to successfully obtain the CISA certification and significantly upgrade your auditing career.
Table of Contents (14 chapters)

Control Identification and Design

An IS auditor needs to have a sufficient understanding of the various control techniques used while designing applications. In the next few sub-sections, you will go through some of the important controls built into an application system.

Check Digits

A check digit is an extra digit used for error detection. A check digit is arrived at by a mathematical algorithm. It is added to the original data to ensure that data is not altered.

By ensuring that the original data is not tampered with or altered, check digits help prevent transposition and transcription errors. The most widely used example of the use of a check digit is the bank account numbers assigned to customers.

For instance, suppose a bank account number is 630000241453. The last digit, 3, is the check digit, and if the other numbers are correct, then the check digit calculation will produce 3:

  1. Add the numbers placed in odd digit positions: 6+0+0+2+1+5 = 14.
  2. Add the...