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E-raamat: CompTIA Linux+ Certification All-in-One Exam Guide: Exam XK0-004

3.82/5 (25 hinnangut Goodreads-ist)

Ted Jordan, Sandor Strohmayer

Formaat: 800 pages
Ilmumisaeg: 07-Feb-2020
Kirjastus: McGraw-Hill Education
Keel: eng
ISBN-13: 9781260457353

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Formaat: 800 pages
Ilmumisaeg: 07-Feb-2020
Kirjastus: McGraw-Hill Education
Keel: eng
ISBN-13: 9781260457353

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This comprehensive study guide delivers 100% coverage of every topic on the challenging CompTIA Linux+ exam

Take the CompTIA Linux+ exam XK0-004 with complete confidence using the detailed information contained in this highly effective self-study guide. Written by a pair of Linux authorities and training experts, the book serves both a powerful exam preparation tool and an ideal on-the-job reference.

CompTIA Linux+ Certification All-in-One Exam Guide: Exam XK0-004 offers complete coverage of every topic on the test and features more than 200 accurate practice questions. You will get special elements that reinforce and teach practical skills, including step-by-step exercises, “Exam Tips” and “Notes.” Sidebars throughout contain real-world insights and practical applications, and end-of-chapter summaries and review questions aid in retention.

•A downloadable virtual machine is pre-configured for use with step-by-step exercises and labs included in each chapter

•Contains a coupon for 10% off any CompTIA exam voucher

•Online content includes simulated practice exams in the Total Tester exam engine and training videos

Acknowledgments

xxi

Introduction

xxiii

Objective Map: Exam XK0-004

xxxii

Chapter 1 An Introduction to Linux and a Pre-Assessment Exam

(46)

A Brief History of Linux

(3)

Batch Processing

(1)

ARPA/DARPA

(1)

Compatible Time-Sharing System

(1)

MULTICS

(1)

UNIX

(1)

MINIX

(1)

GNU

(1)

Linus Torvalds

(1)

Linux Operating System Structure

(2)

Kernel

(1)

Operating System Software

(1)

Application Software

(1)

Distributions

(2)

Distribution Differences

(1)

Linux Derivatives

(1)

Common Linux Implementations

(3)

Linux on the Desktop

(1)

Linux on the Server

(1)

Mobile Linux

(1)

Linux and Virtualization

(1)

Linux and Cloud Computing

(1)

Embedded Linux

(1)

Review

(1)

Pre-Assessment Test

(1)

Questions

(18)

Quick Answer Key

(1)

In-Depth Answer Explanations

(14)

Analyzing Your Results

(2)

Chapter 2 Using the vi Text Editor

(18)

The Role and Function of the vi Text Editor

(1)

Editing Text Files in vi

(9)

Opening Files in vi

(2)

The vi Modes

(1)

Working in Command Mode

(2)

Working in Command-Line Mode

(3)

Exercise 2-1: Using the vi Editor

(1)

Editing Text Files in nano

(1)

Configuration files

(1)

Command Keys

(1)

Review

(2)

Questions

(3)

Answers

(2)

Chapter 3 Working with the Linux Shell

(32)

What Is a Shell?

(1)

Configuring the Shell

(3)

Processes

(1)

Variables

(2)

Aliases

(1)

Setting Up the Local Environment (Locale)

(3)

Character Encoding

(1)

ASCII

(1)

Unicode

(1)

locale Settings

(2)

Setting Time

(5)

date

(1)

/etc/timezone and /usr/share/zoneinfo

(2)

hwclock

(1)

timedatectl

(1)

Bash Configuration Files

(5)

/etc/profile

(1)

/etc/bashrc

(1)

-/.bash_profile

(1)

-/.bashrc

(1)

/etc/profile.d

(1)

The source Command

(1)

Exercise 3-1: Working with Variables, Parameters, and Aliases

(2)

Redirection

(7)

File Descriptors

(1)

Terminal devices

(1)

/dev/null

(1)

stdin

(1)

stdout

(1)

stderr

(1)

Combining stdout and stderr

(1)

Pipe

(1)

Exercise 3-2: Redirection

(2)

Review

(1)

Questions

(4)

Answers

(4)

Chapter 4 Managing Linux Users and Groups

(28)

Understanding Linux Users and Groups

(8)

Linux User Accounts

(6)

Real and Effective User and Group IDs

103

(2)

Creating and Managing User Accounts from the Command Line

105

(12)

useradd

105

(7)

Exercise 4-1: Managing User Accounts from the Command Line

112

(2)

Linux Groups

114

(2)

Exercise 4-2: Managing Groups from the Command Line

116

(1)

Review

117

(1)

Questions

118

(4)

Answers

122

(3)

Chapter 5 Managing Linux Files and Directories

125

(42)

Understanding Filesystem Hierarchy Standard (FHS)

125

(6)

Navigating the Filesystem

128

(1)

Viewing Directory Contents

129

(1)

Exercise 5-1: Navigating the Filesystem

130

(1)

Managing Linux Files

131

(12)

Filenames

131

(1)

Types of Files Used by Linux

132

(1)

Creating New Files

133

(1)

Symbolic and Hard Links

133

(4)

Creating New Directories

137

(1)

Determining the File Content

138

(1)

Viewing File Contents

139

(1)

Deleting Files

140

(1)

Copying and Moving Files

140

(1)

Exercise 5-2: Managing Files and Directories

141

(2)

Finding Files in the Linux Filesystem

143

(5)

Using find

143

(2)

Using xargs

145

(1)

Using locate

146

(1)

Using whereis

147

(1)

Understanding Commands and Precedence

148

(5)

Alias

148

(1)

Function

149

(1)

Builtin

149

(1)

External

150

(2)

Exercise 5-3: Finding Files

152

(1)

Finding Content within Files

153

(4)

grep

153

(2)

egrep

155

(1)

fgrep

155

(2)

Exercise 5-4: Using grep

157

(1)

Review

157

(3)

Questions

160

(3)

Answers

163

(4)

Chapter 6 Managing Ownership and Permissions

167

(20)

Managing File Ownership

167

(3)

Managing Ownership from the Command Line

168

(1)

Exercise 6-1: Managing Ownership

169

(1)

Managing File and Directory Permissions

170

(10)

How Permissions Work

170

(3)

Managing Permissions from the Command Line

173

(2)

Exercise 6-2: Managing Permissions

175

(1)

Working with Default Permissions

176

(2)

Working with Special Permissions

178

(1)

Exercise 6-3: Managing Default and Special Permissions

179

(1)

File Attributes and Access Control Lists

180

(1)

File Access Control Lists

181

(1)

Review

181

(2)

Questions

183

(1)

Answers

184

(3)

Chapter 7 Managing Linux Filesystems

187

(46)

Partitions Overview

187

(12)

Master Boot Record

187

(1)

GPT

188

(3)

Device Naming Conventions

191

(1)

Locating a Device

192

(4)

Viewing Disk Partitions

196

(3)

Creating Partitions

199

(10)

Partition Considerations

199

(2)

fdisk

201

(4)

parted

205

(1)

gdisk

206

(2)

Block Device Encryption

208

(1)

Managing Filesystems

209

(18)

Available Filesystems

209

(1)

Building a Filesystem

210

(4)

Mounting a Filesystem

214

(2)

Automatic Mounts

216

(2)

Unmounting a Partition

218

(1)

Maintaining Linux Filesystems

218

(4)

Managing Quotas

222

(1)

Editing /etc/fstab

222

(1)

Creating database files

222

(1)

Assigning a Quota

223

(1)

Exercise 7-1: Managing Linux Partitions

224

(3)

Review

227

(1)

Questions

228

(3)

Answers

231

(2)

Chapter 8 Configuring Volume Management

233

(24)

Implementing Logical Volume Management

233

(5)

LVM Components

234

(1)

LVM Configuration

235

(2)

LVM Snapshots

237

(1)

Creating Archives and Performing Compression

238

(7)

Selecting a Backup Medium

239

(1)

Selecting a Backup Strategy

239

(1)

Linux Backup and Compression Utilities

240

(4)

Exercise 8-1: Backing Up Data

244

(1)

Enabling RAID with LVM

245

(8)

Software RAID Configuration

247

(1)

Verifying RAID Status

248

(1)

Exercise 8-2: RAID and Logical Volumes

248

(5)

Review

253

(1)

Questions

254

(2)

Answers

256

(1)

Chapter 9 Managing Linux Processes

257

(38)

Understanding Linux Processes

257

(6)

User Versus System Processes

258

(2)

How Linux Processes Are Loaded

260

(3)

Managing Processes

263

(17)

Starting System Processes

263

(2)

Viewing Running Processes

265

(6)

Prioritizing Processes

271

(2)

Managing Foreground and Background Processes

273

(2)

Ending a Running Process

275

(2)

Keeping a Process Running After Logout

277

(1)

Exercise 9-1: Working with Linux Processes

277

(3)

Scheduling Processes

280

(8)

Using the at Daemon

280

(2)

Using the cron Daemon

282

(3)

Exercise 9-2: Scheduling Linux Processes

285

(2)

Using the anacron Service

287

(1)

Review

288

(2)

Questions

290

(3)

Answers

293

(2)

Chapter 10 Managing Linux Software

295

(38)

What Is a Package Manager?

295

(1)

Red Hat Package Manager (RPM)

296

(7)

Package Names

296

(1)

RPM modes

297

(1)

Installing an RPM Package

298

(1)

Upgrading an RPM Package

298

(1)

Removing (Erasing) an RPM Package

299

(1)

Verify Mode

299

(2)

Querying the RPM Database

301

(1)

rpm2cpio

301

(1)

Exercise 10-1: RPM

302

(1)

yum

303

(6)

/etc/yum.conf

304

(1)

/etc/yum/repos.d

305

(1)

Plug-Ins

306

(1)

Yum Commands

307

(2)

Exercise 10-2: Yum

309

(1)

dnf

309

(1)

zypper

310

(2)

Installing, Updating, and Removing Packages

310

(1)

Working with Repositories

311

(1)

Debian Package Management

312

(5)

Debian Package Naming

312

(1)

Installing Packages with dpkg

312

(1)

Viewing Package Information with apt-cache

312

(2)

Installing Packages with apt-get

314

(1)

Using aptitude

314

(3)

Installing Packages from a Source

317

(4)

Preparing the Installation Files

317

(2)

Compiling the Executable

319

(1)

Installing the Executable

319

(1)

Exercise 10-3: Building Software from Source Code

320

(1)

Uninstalling Software Compiled from Source Code

320

(1)

Managing Shared Libraries

321

(3)

How Shared Libraries Work

321

(2)

lib/modules

323

(1)

Review

324

(2)

Questions

326

(4)

Answers

330

(3)

Chapter 11 Managing the Linux Boot Process

333

(30)

The Bootstrap Phase

333

(4)

BIOS

334

(2)

UEFI ESP

336

(1)

PXE

337

(1)

ISO

337

(1)

The Bootloader Phase

337

(9)

GRUB (Legacy)

337

(6)

GRUB2

343

(2)

Exercise 11-1: Working with GRUB2

345

(1)

The Kernel Phase

346

(1)

System V Initialization

346

(5)

Runlevel

346

(1)

/etc/inittab

347

(1)

/etc/rc.local

348

(1)

Changing Runlevels

349

(1)

Managing Daemons

349

(1)

Shutting Down the System

350

(1)

Working with systemd

351

(4)

Units

351

(3)

Controlling Services

354

(1)

Targets

354

(1)

Kernel Panic

355

(1)

Review

356

(2)

Questions

358

(4)

Answers

362

(1)

Chapter 12 Managing Hardware Under Linux

363

(50)

Discovering Devices

363

(13)

Kernel and User Space

363

(1)

/sys and sysfs

364

(2)

PCI

366

(3)

Host Bus Adapter (HBA)

369

(1)

udev

370

(6)

Configuring Hardware Devices

376

(8)

lsdev

376

(5)

lshw

381

(2)

Exercise 12-1: Discovering Devices

383

(1)

Configuring Bluetooth

384

(1)

Classes

384

(1)

Bluetooth Commands

384

(1)

Configuring Wi-Fi

385

(2)

Scanning for Network Devices

385

(1)

Configuring a Wi-Fi Network

386

(1)

Configuring Storage Devices

387

(7)

IDE

387

(1)

SCSI

387

(1)

SATA

388

(1)

Optical Drives

389

(1)

Solid State Drives

389

(1)

USB

389

(3)

sginfo

392

(1)

hdparm

393

(1)

lsscsi

393

(1)

Understanding Printing

394

(1)

Adding Printers

394

(1)

lpadmin

394

(7)

Printing to a Printer

397

(1)

Managing Printers and Print Queues

397

(1)

Cancelling Print Jobs

398

(1)

lpmove

399

(1)

Removing a Printer or Printer Class

399

(1)

Exercise 12-2: Printing

400

(1)

Using Facility Priority with dmesg

401

(1)

Using the abrt Command

402

(2)

Exercise 12-3: abrt

403

(1)

Review

404

(3)

Questions

407

(3)

Answers

410

(3)

Chapter 13 Writing Shell Scripts

413

(38)

Understanding Shell Script Components

413

(5)

Shebang (#!)

413

(1)

Comments (#)

413

(1)

Executing a Script

413

(1)

Variables

414

(1)

Reading User Input

415

(1)

Positional Parameters

416

(1)

Functions

417

(1)

Command Substitution

418

(1)

Using Control Operators

418

(8)

Expressions

418

(3)

Control Structure

421

(2)

Using Looping Structures

423

(2)

Exercise 13-1: Creating a Basic Shell Script

425

(1)

Processing Text Streams

426

(17)

426

(1)

cut

427

(1)

expand and unexpand

428

(1)

fmt

429

(1)

join and paste

429

(1)

430

(2)

432

(1)

433

(1)

sed

433

(4)

awk

437

(3)

sort

440

(1)

split

441

(1)

head

441

(1)

tail

441

(1)

uniq

441

(1)

442

(1)

Exercise 13-2: Processing Text Streams

442

(1)

Review

443

(2)

Questions

445

(3)

Answers

448

(3)

Chapter 14 Managing Linux Network Settings

451

(38)

Understanding IP Networks

452

(9)

What Is a Protocol?

452

(4)

How IPv4 Addresses Work

456

(2)

How IPv4 Subnet Masks Work

458

(3)

Configuring Network Addressing Parameters

461

(11)

Assigning NIC Nomenclature

461

(1)

Configuring IPv4 Parameters

461

(5)

Exercise 14-1: Working with Network Interfaces

466

(1)

Configuring Routing Parameters

467

(2)

Configuring Name Resolver Settings

469

(2)

Configuring IPv6

471

(1)

Troubleshooting Network Problems

472

(8)

Using a Standardized Troubleshooting Model

472

(2)

Using ping

474

(1)

Using netstat

475

(1)

Using traceroute

476

(2)

Using nc

478

(1)

Using Name Resolution Tools

478

(2)

Exercise 14-2: Working with Network Commands

480

(1)

Understanding Network-based Filesystems

480

(2)

Network File System (NFS)

481

(1)

Samba

481

(1)

Review

482

(2)

Questions

484

(2)

Answers

486

(3)

Chapter 15 Understanding Network Security

489

(44)

Understanding How Encryption Works

489

(3)

Symmetric Encryption

490

(1)

Asymmetric Encryption

491

(1)

Integrity Checking via Hashing

491

(1)

Implementing Secured Tunnel Networks

492

(11)

How SSH Works

493

(1)

Configuring SSH

494

(2)

Exercise 15-1: Working with SSH

496

(2)

Logging In to SSH Without a Password

498

(2)

Exercise 15-2: Configuring Public Key Authentication

500

(1)

Virtual Private Networks

501

(2)

Configuring High-Availability Networking

503

(2)

Network Bridge Control

504

(1)

Network Bonding

505

(1)

Understanding Single Sign-On

505

(3)

RADIUS

506

(1)

LDAP

507

(1)

Kerberos

507

(1)

TACACS+

508

(1)

Defending Against Network Attacks

508

(12)

Mitigating Network Vulnerabilities

508

(3)

Implementing a Firewall with firewalld

511

(4)

Exercise 15-3: Implementing Network

Security Measures with firewalld

515

(1)

Implementing a Firewall with iptables

516

(2)

Exercise 15-4: Implementing Network

Security Measures with iptables

518

(2)

Encrypting Files with GPG

520

(8)

How GPG Works

520

(1)

Using GPG to Encrypt Files

521

(5)

Exercise 15-5: Using GPG to Encrypt Files

526

(2)

Review

528

(2)

Questions

530

(1)

Answers

531

(2)

Chapter 16 Securing Linux

533

(44)

Securing the System

533

(3)

Securing the Physical Environment

533

(1)

Securing Access to the Operating System

534

(2)

Controlling User Access

536

(14)

To Root or Not to Root?

536

(3)

Implementing a Strong Password Policy

539

(3)

Locking Accounts After Failed Authentications

542

(1)

Configuring User Limits

543

(2)

Disabling User Login

545

(2)

Security Auditing Using find

547

(2)

Exercise 16-1: Managing User Access

549

(1)

Managing System Logs

550

(12)

Configuring Log Files

550

(7)

Using Log Files to Troubleshoot Problems

557

(3)

Using Log Files to Detect Intruders

560

(2)

Enhancing Group and File Security

562

(7)

Implementing SELinux

562

(5)

Implementing AppArmor

567

(1)

Exercise 16-2: Managing SELinux Contexts

568

(1)

Review

569

(3)

Questions

572

(3)

Answers

575

(2)

Chapter 17 Applying DevOps: Automation and Orchestration

577

(14)

Orchestration Concepts

577

(2)

Orchestration Processes

579

(1)

The Git Revision Control System

580

(7)

Using Git

580

(3)

Collaborating with Git

583

(3)

Exercise 17-1: Working with a Git Repository

586

(1)

Review

587

(1)

Questions

588

(1)

Answers

589

(2)

Chapter 18 Understanding Cloud and Virtualization

591

(12)

Understanding Virtualization

591

(3)

Hypervisors

591

(2)

Thin vs. Thick Provisioning

593

(1)

Virtualization File Formats

593

(1)

libvirt

593

(1)

Containers

594

(2)

Persistent Volumes

594

(1)

BLOB Storage

594

(1)

Container Markup Languages

595

(1)

Cloud-init

595

(1)

Networking

596

(1)

NAT

596

(1)

Bridge

596

(1)

Overlay

596

(1)

Dual-Homed

596

(1)

Bonding Interfaces

596

(1)

Virtual Switch

597

(1)

Anaconda and Kickstart

597

(1)

Review

598

(1)

Questions

599

(2)

Answers

601

(2)

Chapter 19 Troubleshooting and Diagnostics

603

(26)

A Standardized Troubleshooting Model

603

(1)

Troubleshooting Computer Problems

604

(13)

Verify Hardware Configuration

604

(2)

Verify CPU Performance

606

(1)

Verify Memory Performance

607

(3)

Exercise 19-1: Working with Swap Space

610

(1)

Validate Storage Performance

610

(3)

Validate Other Devices

613

(4)

Troubleshooting Network Problems

617

(8)

Verify Network Performance

618

(4)

Validate User Connections

622

(1)

Validate the Firewall

623

(1)

Exercise 19-2: Troubleshooting Networking Issues

624

(1)

Review

625

(1)

Questions

626

(2)

Answers

628

(1)

Chapter 20 Installing and Configuring Linux

629

(36)

Designing a Linux Installation

630

(10)

Linux Installers and the Lima+ Exam

630

(1)

Conducting a Needs Assessment

630

(1)

Selecting a Distribution

631

(1)

Checking Hardware Compatibility

632

(1)

Verifying System Requirements

633

(1)

Planning the Filesystem

633

(2)

Selecting Software Packages

635

(1)

Identifying User Accounts

636

(1)

Gathering Network Information

636

(1)

Selecting an Installation Source

636

(4)

Installing Linux

640

(3)

Exercise 20-1: Installing a Linux System

640

(3)

Configuring the X Environment

643

(6)

Configuring the X Server

643

(3)

Configuring the Display Manager

646

(1)

Configuring Accessibility

647

(2)

Configuring Locale Settings

649

(1)

Configuring Time Zone Settings

650

(1)

Configuring Printing with CUPS

651

(3)

Configuring CUPS

651

(3)

Configuring E-mail

654

(2)

Configuring SQL Databases

656

(1)

Questions

657

(5)

Answers

662

(3)

Appendix About the Online Content

665

(4)

System Requirements

665

(1)

Your Total Seminars Training Hub Account

665

(1)

Privacy Notice

665

(1)

Single User License Terms and Conditions

665

(2)

TotalTester Online

667

(1)

Other Book Resources

667

(1)

Virtual Machines

667

(1)

Videos

668

(1)

Book Figures

668

(1)

Technical Support

668

(1)

Index

669

Ted Jordan has more than 25 years of UNIX, IRIX, Solaris, and Linux experience. He is founder and president of two successful tech companies, including Funutation Tekademy Inc., which teaches kids programming on Linux-based Raspberry Pi systems their franchise operators. Sandor Strohmayer has been an instructor for over 20 years. He has authored multiple Linux training guides and created learning programs for several corporate entities. Mr. Strohmayer specializes in developing book, e-learning, and blended learning course materials.

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Püsilink: https://www.kriso.ee/db/97812604573536e.html

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E-raamat: CompTIA Linux+ Certification All-in-One Exam Guide: Exam XK0-004

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