CompTIA" Cloud Essentials Certification Study Guide. (Exam CLO-001) ITpreneurs

Transcription

1 CompTIA" Cloud Essentials Certification Study Guide (Exam CLO-001) ITpreneurs JGraw-Hill Education and ITpreneurs are independent entities from CompTIA". Is publication and CD-ROM may be used in assisting students to prepare for the ImpTIA Cloud Essentials exam.comptia, McGraw-Hill Education,and ITpreneurs I not warrant that use of this publication and CD-ROM will ensure passing an/ exam. [mptia and CompTIA Cloud Essentials are trademarks or registered trademarks i-omptia in the United States and/or other countries.aii other trademarks are demarks of their respective owners. Iginal edition copyright 2012 by ITpreneurs Nederland B.V.as set forth in copyright lice of Licensor's edition.am rights reserved. Mc Graw Hill NewYork Chicago San Francisco Athens London Madrid Mexico City Milan New Delhi Singapore Sydney Toronto

2 CONTENTS Preface Introduction xv xix 1 Introduction to Cloud Computing I Cloud Computing: Common Terms and Definitions 2 Cloud Computing Characteristics 4 Cloud Computing and Virtualization 5 Early Examples of Cloud Computing 6 Cloud Computing Deployment Models 7 Private Cloud 7 Community Cloud 8 Public Cloud 8 Hybrid Cloud 8 Positive Indicators for Cloud Readiness 9 Negative Indicators for Cloud Readiness 10 Cloud Service Categories 11 / Two-Minute Drill 14 Q&A Se'lfTest 16 Self Test Answers 19 2 Business Perspectives 23 Similarities and Differences Between Cloud Computing and Outsourcing 24 Reasons for Outsourcing 26 Cloud Computing and Outsourcing Common Traits 26 Characteristics of Clouds and Cloud Services from a Business Perspective 27 Scalability 27 Capacity Planning 27 Security 28 xi

3 Xii CompTIA Cloud Essentials Certification Study Guide How the Characteristics of Cloud Computing Enhance Business Value 30 Hardware Independence and Variable Costs 30 / Two-Minute Drill 34 Q&A Self Test 35 Self Test Answers 37 3 Technical Perspectives 41 Differences Between Public and Private Clouds 42 Private Clouds 42 Public Clouds 43 Hybrid Clouds 44 Cloud Computing Service Models 44 Techniques Computing Deployment 51 Networking 51 and Methods for Cloud Automation and Self-Service 52 Federation 53 Standardization 54 Cloud Computing Risks and Challenges 55 Application Performance 55 Data Replication 57 Data Integration 57 Network Security 57 The Impact of Cloud Computing on Application Development and Architecture 58 Development Process 58 Application Architecture 59 / Two-Minute Drill 61 Q&A SelfTest 63 Self Test Answers 65

4 Contents xhl 4 Adopting Cloud Computing 69 Typical Steps Leading to Successful Cloud Adoption 70 Cloud Computing Myths 70 Adopting Service Models 73 Cloud Computing Vendor Roles and Capabilities 74 Vendor and Provider Dependencies 75 Organizational Capabilities That Are Relevant for Realizing Cloud Benefits 77 Organization Roles and Skills 78 Migrating Applications to the Cloud 80 / Two-Minute Drill 82 Q&A Self Test 84 SelfTest Answers 86 5 Operating Cloud Computing 91 Cloud Computing Changes on IT Service Management 92 Impact on Service Management Processes 92 Explore the Potential Impact of Cloud Computing Using ITIL 96 / Two-Minute Drill 100 Q&A Self Test 102 Self Test Answers Governing Cloud Computing 107 Identify Challenges in Integrating Cloud Computing into an Organization's Existing Governance Framework 108 Risk Management 108 Explain the Implications for Direct Cost and Cost Allocations 113 Understand How to Maintain Strategic Flexibility 115 Exit Strategy 115 Strategic Options 116 / Two-Minute Drill 118 Q&A SelfTest 120 Self Test Answers 122

5 XiV CompTIA Cloud Essentials Certification Study Guide A About the CD-ROM 127 System Requirements 128 Installing and Running MasterExam 128 MasterExam 128 Help 129 Removing Installation(s) 129 Electronic Book 129 Technical Support 129 LearnKey Technical Support 130 McGraw-Hill Content Support 130 B Practice Exam 131 Questions 132 Answers 141 Glossary 161 Index 167