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CompTIA Cloud+ Study Guide: Exam CV0-001

ISBN: 978-1-119-24322-9
360 pages
November 2016
CompTIA Cloud+ Study Guide: Exam CV0-001 (111924322X) cover image

Description

A hands-on approach to cloud computing for Exam CV0-001

CompTIA Cloud+ Study Guide covers 100% of all exam CV0-001objectives with in-depth explanations from expert Todd Montgomery. This comprehensive resource covers all aspects of cloud computing infrastructure and administration, with a practical focus on real-world skills. Each chapter includes a list of exam topics, helpful hands-on exercises, and illustrative examples that show how concepts are applied in different scenarios, to help you build a solid foundation of cloud computing skills. You also gain access to the Sybex interactive online learning environment and test bank, featuring electronic flashcards, glossary of key terms, and chapter tests and practice exams that help you test your knowledge and gauge the extent of your understanding.

CompTIA's Cloud+ certification covers the implementation, maintenance, delivery, and security of cloud technologies and infrastructure. With thorough coverage, practical instruction, and expert insight, this book provides an ideal resource for Exam CV0-001 preparation.

  • Master the fundamental concepts, terminology, and characteristics of cloud computing
  • Implement cloud solutions, manage the infrastructure, and monitor performance
  • Install, configure, and manage virtual machines and devices
  • Get up to speed on hardware, testing, deployment, and more

The Cloud+ certification identifies you as the professional these companies need to ensure safe, seamless, functional cloud services, and The CompTIA Cloud+ Study Guide Exam CV0-001 provides the tools you need to be confident on exam day.

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Table of Contents

Introduction xxv

Assessment Test li

Chapter 1 Cloud Computing Overview, Concepts, and Models 1

Overview of Cloud Computing 3

What Is Cloud Computing? 3

Computing as a Utility Service 3

The Growth of the Cloud 4

Why Do This? 4

Cloud vs. In-House Computing 5

The Past of Computing 5

Present State of Computing 6

The Future of the Cloud 7

Cloud Services Models and Architecture 7

SaaS 7

IaaS 8

PaaS 9

CaaS 10

XaaS 10

DaaS 10

BPaaS 10

Accountability and Responsibility Based on Service Models 10

Cloud Delivery Models 11

Private 11

Public 11

Hybrid 12

Community 12

On-Premise vs. Off-Premise Hosting 13

Security Differences between Models 13

Functionality and Performance Validation Based on Chosen Delivery Model 13

Orchestration Platforms 14

Cloud Characteristics and Terms 14

Elasticity 14

On-Demand 14

Pay-As-You-Grow 15

Chargeback 15

Ubiquitous Access 15

Metering Resource Pooling 15

Multitenancy 15

Cloud Bursting 16

Rapid Deployment 16

Automation 16

Cloud Object Storage Concepts 16

Object ID 16

Metadata 16

Data/BLOB 17

Extended Metadata 17

Policies 17

Replicas 17

Access Control 17

Summary 17

Exam Essentials 18

Written Lab 18

Review Questions 19

Chapter 2 Compute Virtualization in the Cloud 23

Understanding the Hypervisor in a Virtualized Cloud 25

Type 1 and Type 2 Hypervisor Types 25

Proprietary vs. Open Source 26

Consumer vs. Enterprise Use 26

Workstation vs. Infrastructure 27

Setting Up and Managing VMs, Networking, and Storage 27

Creating, Importing, and Exporting Templates and VMs 27

Installing Guest Tools 28

Snapshots and Cloning 28

Image Backups vs. File Backups 29

Virtual NIC 30

Virtual Disks 30

Virtual Switches 30

VLAN 31

VSAN 31

Migrating from Physical Servers to a Virtual Architecture 31

Establish Requirements 31

Maintenance Scheduling 32

Performance Testing 32

Storage Migration 32

Online vs. Offline Migrations 33

Physical-to-Virtual (P2V) 33

Virtual-to-Virtual (V2V) 34

Virtual-to-Physical (V2P) 34

Understanding the Benefits of Virtualization in a Cloud Environment 35

Shared Resources 35

Elasticity 35

The Time to Service/Mean Time to Implement 35

Portability 36

Network and Application Isolation 36

Infrastructure Consolidation 36

Virtual Datacenter Creation 36

Virtual Components in a Cloud Environment 36

Virtual Network Components 36

Shared Memory 37

Virtual CPU 37

Storage Virtualization 37

Summary 37

Exam Essentials 38

Written Lab 38

Review Questions 40

Chapter 3 Cloud Storage and Provisioning 45

Understanding Infrastructure 46

Comparing Storage Technologies 46

Network-Attached Storage (NAS) 46

Direct-Attached Storage (DAS) 47

Storage Area Network (SAN) 48

Working with Storage Protocols 51

FCoE 51

FC 51

Ethernet 52

iSCSI 53

Understanding Protocols and Applications 53

IP 53

FCP 54

iSCSI 54

Management Differences 54

Understanding Storage Configuration Concepts 54

Disk Types 54

SSD vs. Spinning 55

Interfaces Types 55

Access Speed 56

Tiering 56

Performance Levels of Each Tier 57

Policies 57

RAID Levels 57

RAID 0 58

RAID 1 58

RAID 1+0 59

xvi Contents

RAID 0+1 59

RAID 5 60

RAID 6 61

Filesystem Types 61

UFS 61

EXT 62

NTFS 62

FAT 62

VMFS 62

ZFS 63

Using Storage Provisioning and Creating LUNs 63

Creating Network Shares 63

Zoning and LUN Masking 63

Multipathing 64

Implications of Adding Capacity to a NAS and SAN 64

Impact to Operations 65

Downtime 65

Best Practices 65

Summary 65

Exam Essentials 66

Written Lab 67

Review Questions 69

Chapter 4 Cloud Networking Concepts and Implementation 73

Implementing Appropriate Network Configurations 75

NAT 75

PAT 76

Subnetting/Supernetting 77

VLAN and VLAN Tagging 77

Network Port Configurations 78

Switching and Routing in Physical and Virtual Environments 79

The Importance of Network Optimization 80

WAN 80

LAN 81

MAN 82

QoS 82

Bandwidth 83

Latency 83

Compression 83

Caching 84

Load Balancing 84

Devices on the Same Subnet 85

Troubleshooting Basic Network Connectivity Issues 85

Tools 85

Review Documentation and Device Configuration Settings 92

Review System Logs 92

Common Network Protocols, Ports, and Topologies 93

Trunk Ports 93

Port Binding/Aggregation 93

Common Ports 94

Common Protocols 95

Types of Networks 96

Summary 97

Exam Essentials 97

Written Lab 98

Review Questions 99

Chapter 5 Cloud Compute Resources, Concepts, and Implementation 103

Understanding the Hardware Computing Resources in the Cloud 104

BIOS/Firmware Configurations 104

Minimum Memory Capacity and Configuration 106

Number of CPUs 107

Number of Cores 108

NICs Quantity, Speeds, and Configurations 109

Internal Hardware Compatibility 110

Computing Storage Systems 110

HBAs 110

Storage Media 111

Summary 115

Exam Essentials 115

Written Lab 116

Review Questions 117

Chapter 6 Cloud Management Concepts 121

Managing Your Cloud Deployment 122

What Do We Mean by Managing Your Cloud? 122

Who Has Responsibility? 124

Management Models 125

Cloud Provider Management Services 125

What Does the Provider Manage? 126

What Do They Not Manage? 126

Responsibility for Management in the Cloud 127

Management as a Service 127

What Is Management as a service? 127

Cloud Management Providers 128

Outsourcing Your Management Responsibilities or Keeping It in House 128

Remote Access Tools for Managing Your Cloud 128

What Are the Tools Used for Remote Management? 128

VPN Access 129

SNMP 129

Firewalls 130

Summary 130

Exam Essentials 131

Written Lab 131

Review Questions 133

Chapter 7 Cloud Operations 137

Implementing and Using Cloud Resource Monitoring 139

Protocols 139

Alert Methods 142

Establish Baselines and Thresholds 143

Automated Responses to Specific Events 144

Examine Processes Usage and Resource Usage 144

Understanding and Allocating Physical Host Resources 144

Memory 145

CPU 146

Storage and Network Allocation 146

Entitlement/Quotas (Shares) 146

Reservations 147

Licensing 148

Resource Pooling 148

Understanding and Allocating Virtual Host Resources 148

Virtual CPU 149

Memory 149

Storage and Network Allocation 150

Entitlement/Quotas (Shares) 151

Hard Limit, Soft Limit 151

Reservations and Licensing 151

Dynamic Resource Allocation 152

Resource Pooling 152

CPU Affinity 152

Physical Resource Redirection and Mapping to Virtual Resources 153

Accessing Cloud Resources Remotely 153

Remote Hypervisor Access 153

RDP 155

SSH 155

Console Port 156

HTTP 156

Summary 157

Exam Essentials 158

Written Lab 159

Review Questions 160

Chapter 8 Understanding and Maintaining Cloud Security 165

Understanding Network Security Concepts, Tools, and Best Practices 167

ACLs 167

VPNs 168

IDS/IPS 168

Hardware- and Software-Based Firewalls 170

DMZ 170

Review/Audit Logs 171

Attacks 172

Understanding Storage Security Concepts, Methods, and Best Practices 175

Obfuscation 175

Access Control Lists 175

Zoning 176

LUN Masking 176

User and Host Authentication 177

Review/Audit Logs 178

Cloud Encryption Technologies and Methods 178

PKI 178

IPsec 180

SSL/TLS 181

Ciphers 181

Encryption for Data in Transit and Encryption for Data at Rest 183

Understanding User Access Control 183

Role-Based Administration 183

Mandatory Access Controls 184

Discretionary Access Controls 185

Multifactor Authentication 185

Single Sign-On 185

Federation 186

Hardening the Guest OS and Compute Resources 186

Disabling Unneeded Ports and Services 187

User Credentials 187

Host-Based/Software Firewalls 187

Antivirus Software 188

Patching 188

Deactivating Default Accounts 188

Summary 188

Exam Essentials 189

Written Lab 190

Review Questions 191

Chapter 9 Systems Management in the Cloud 195

Understanding Policies and Procedures in the Cloud Environment 197

Network and IP Planning, Documentation 197

Configuration Standardization and Documentation 198

Change Management Best Practices 199

Configuration Management 201

Capacity Management 202

Systems Life-Cycle Management 203

Maintenance Windows 204

Diagnosing, Remediating, and Optimizing Physical Host Performance 205

Disk Performance 205

Disk Tuning 205

Disk Latency 206

Swap Disk Space 206

I/O Tuning 206

Performance Management and Monitoring Tools 207

Establish Baseline and Create Documentation with Appropriate Tools 207

Hypervisor Configuration Best Practices 208

Impact of Configuration Changes to the Virtual Environment 209

Common Issues 209

Understanding Cloud Performance Concepts 212

IOPS 212

Read vs. Write Files 212

Filesystem Performance 213

Metadata Performance 213

Caching 213

Bandwidth 214

Throughput (Bonding/Teaming) 214

Jumbo Frames 215

Network Latency 216

Hop Counts 216

QoS 217

Multipathing 217

Load Balancing 218

Scaling 218

Testing Your Cloud Services Deployment 220

Replication Testing 220

Latency Testing 221

Bandwidth Testing 221

Load Balancing Testing 221

Application Server Testing 221

Storage Testing 222

Application Delivery Testing 222

Service Performance Testing and Application Performance Testing 222

Penetration Testing 222

Vulnerability Assessment 223

Separation of Duties 224

Summary 224

Exam Essentials 225

Written Lab 225

Review Questions 227

Chapter 10 Understanding Business Continuity in the Cloud 231

Disaster Recovery Methods and Concepts 232

Redundancy 233

Failover 234

Failback 234

Geographical Diversity 235

Replication 236

Site Mirroring 236

Hot Site 236

Warm Site 237

Cold Site 238

Backup and Recovery 239

Archiving and Offsite Storage 240

Replication Types 241

Recovery Time Objective 242

Recovery Point Objective 242

Mean Time Between Failures 243

Mean Time to Repair 243

Mission-Critical Requirements 243

High Availability and Fault Tolerance in the Cloud 244

Fault Tolerance 244

Multipathing 246

Load Balancing 246

Summary 247

Exam Essentials 248

Written Lab 248

Review Questions 250

Appendix A Answers to Written Labs 255

Chapter 1: Cloud Computing Overview, Concepts, and Models 256

Chapter 2: Compute Virtualization in the Cloud 256

Chapter 3: Cloud Storage and Provisioning 256

Chapter 4: Cloud Networking Concepts and Implementation 257

Chapter 5: Cloud Compute Resources, Concepts, and Implementation 257

Chapter 6: Cloud Management Concepts 258

Chapter 7: Cloud Operations 258

Chapter 8: Understanding and Maintaining Cloud Security 259

Chapter 9: Systems Management in the Cloud 259

Chapter 10: Understanding Business Continuity in the Cloud 260

Appendix B Answers to Review Questions 261

Chapter 1: Cloud Computing Overview, Concepts, and Models 262

Chapter 2: Compute Virtualization in the Cloud 263

Chapter 3: Cloud Storage and Provisioning 264

Chapter 4: Cloud Networking Concepts and Implementation 266

Chapter 5: Cloud Compute Resources, Concepts, and Implementation 267

Chapter 6: Cloud Management Concepts 268

Chapter 7: Cloud Operations 269

Chapter 8: Understanding and Maintaining Cloud Security 271

Chapter 9: Systems Management in the Cloud 272

Chapter 10: Understanding Business Continuity in the Cloud 273

Index 275

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Author Information

Todd Montgomery, CompTIA Cloud+, Networking+, Security+, is a senior datacenter networking engineer for a Fortune 500 company, where he is involved with network design and implementation of emerging technologies. A 35-year veteran of the IT industry, Todd works with SDN/software defined networking design plans; cloud design and implementation; Cisco Nexus 9k, 7k, 5k, and 2k; Juniper core routing and firewall security products; and Citrix load balancers.

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