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)

Voice over Internet Protocol (VoIP)

VoIP is the transmission of voice and other content over IP networks. It is also known as IP telephony or internet telephony. It is made possible by digitalizing sounds into IP packets and transmitting them through a network layer where they are again decoded to sound. VoIP is a cost-effective solution for long-distance calls. VoIP can be operated from IP infrastructure and very little additional telephony infrastructure is required.

A CISA aspirant is required to understand the following aspects of VoIP:

  • It is very important to consider a backup arrangement for a VoIP system as data traffic normally has less reliability. A backup arrangement is required to ensure that communication is not interrupted in case of an undesirable event impacting the network service.
  • Bandwidth capacity should be determined for voice traffic to ensure the quality of the service.
  • VoIP infrastructure should be designed in consideration of laws and regulations...