Table Of ContentAll-In-One / CompTIA A+™ Certification All-in-One Exam Guide / Meyers / 990-6 / Front Matter
Blind Folio: i
ALL IN ONE
A+
TM
CompTIA
Certification
E X A M G U I D E
Eleventh Edition (Exams 220-1101 & 220-1102)
00-FM.indd 1 24/09/22 3:03 PM
All-In-One / CompTIA A+™ Certification All-in-One Exam Guide / Meyers / 990-6 / Front Matter
Blind Folio: ii
ABOUT THE SERIES EDITOR
Michael Meyers is the industry’s leading authority on CompTIA A+ and CompTIA
Network+ certifications. He was the president and co-founder of Total Seminars, LLC, a
major provider of computer and network repair curriculum and seminars for thousands
of organizations throughout the world, and a member of CompTIA. Today, Mike works
as Vice President of marketing for National Cyber Group (www.nationalcyber.com).
Mike has written numerous popular textbooks, including the best-selling Mike Meyers’
CompTIA A+ Guide to Managing and Troubleshooting PCs, Mike Meyers’ CompTIA
Network+ Guide to Managing and Troubleshooting Networks, and Mike Meyers’ CompTIA
Security+ Certification Guide, plus many more.
About the Authors
Travis A. Everett is a software developer, writer, and editor who writes open-source
software in his spare time (and occasionally blogs about it). In addition to holding an
MFA in creative writing from Old Dominion University, Travis owns exactly one-third
of an original copy of Wolfenstein 3D on floppy disk and rewatches The Matrix regularly.
Travis is CompTIA A+ certified.
Andrew Hutz may be the newest guy on the Total Seminars writing staff, but he
brings ten years of writing experience in both IT and the music industry. When not
working for Total Seminars, Andrew deals with risk management in the cybersecurity
arena, where he blogs at https://tgasec.wordpress.com. Andrew holds the CompTIA A+
and CompTIA Security+ certifications and is working toward his bachelor’s degree in
software development and security.
About the Editor in Chief
Melissa Layne, EdD, has dedicated over 25 years in the field of education in various
capacities. Roles include serving as a clinical professor teaching and developing several
pre-service teacher courses at Sam Houston State University, a director of research, AVP
for research and innovation, editor in chief for four academic journals, and founding
editor for two of those journals. She has authored over 50 peer-reviewed academic articles
and book chapters on virtual environments and online learning. Dr. Layne has also led
internships for graduate students in scholarly communications, editorial processes, peer
review, and publishing. She loves to mess around in her flower garden and spend time
with her four children and three grandchildren.
00-FM.indd 2 24/09/22 3:03 PM
All-In-One / CompTIA A+™ Certification All-in-One Exam Guide / Meyers / 990-6 / Front Matter
Blind Folio: iii
About the Technical Editor
Mark Edward Soper has worked with computers and related technologies for over
30 years and specializes in technology education through training, writing, and public
speaking. He has authored and co-authored 40 books on technology topics ranging from
CompTIA A+ certification to Microsoft Windows, networking, and troubleshooting.
Mark has also taught these and other topics across the United States.
Mark has CompTIA A+ and Microsoft MOS – Microsoft Excel 2013 certifications,
and currently teaches Microsoft Office classes for University of Southern Indiana and
Ivy Tech Community College. Mark blogs at https://markesoper.com.
Special Mention: Michael Smyer
Our resident super-nerd Michael Smyer really stepped up to the plate in supporting the
book production and helping get Melissa Layne up to speed in record time. Many thanks
Michael—your ongoing magic with graphics combined with your jumping into the editor
slot kept the book going when we needed it most.
00-FM.indd 3 24/09/22 3:03 PM
All-In-One / CompTIA A+™ Certification All-in-One Exam Guide / Meyers / 990-6 / Front Matter
Blind Folio: iv
This page intentionally left blank
00-FM.indd 4 24/09/22 3:03 PM
All-In-One / CompTIA A+™ Certification All-in-One Exam Guide / Meyers / 990-6 / Front Matter
Blind Folio: v
ALL IN ONE
A+
TM
CompTIA
Certification
E X A M G U I D E
Eleventh Edition (Exams 220-1101 & 220-1102)
Mike Meyers,
Series Editor
Travis A. Everett
Andrew Hutz
New York Chicago San Francisco
Athens London Madrid Mexico City
Milan New Delhi Singapore Sydney Toronto
McGraw Hill is an independent entity from CompTIA® and is not affiliated with CompTIA in any manner. This publication and accompanying media
may be used in assisting students to prepare for the CompTIA A+™ exams. Neither CompTIA nor McGraw Hill warrants that use of this publication and
accompanying media will ensure passing any exam. CompTIA and CompTIA A+ are trademarks or registered trademarks of CompTIA in the United
States and/or other countries. All other trademarks are trademarks of their respective owners. The CompTIA Marks are the proprietary trademarks and/or
service marks of CompTIA and its affiliates used under license from CompTIA.
00-FM.indd 5 24/09/22 3:03 PM
Copyright © 2023 by McGraw Hill. All rights reserved. Except as permitted under the United States Copyright Act of 1976, no
part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system,
without the prior written permission of the publisher, with the exception that the program listings may be entered, stored, and
executed in a computer system, but they may not be reproduced for publication.
ISBN: 978-1-26-461015-0
MHID: 1-26-461015-7
The material in this eBook also appears in the print version of this title: ISBN: 978-1-26-460990-1,
MHID: 1-26-460990-6.
eBook conversion by codeMantra
Version 1.0
All trademarks are trademarks of their respective owners. Rather than put a trademark symbol after every occurrence of a trade-
marked name, we use names in an editorial fashion only, and to the benefit of the trademark owner, with no intention of infringe-
ment of the trademark. Where such designations appear in this book, they have been printed with initial caps.
McGraw Hill eBooks are available at special quantity discounts to use as premiums and sales promotions or for use in corporate
training programs. To contact a representative, please visit the Contact Us page at www.mhprofessional.com.
Information has been obtained by McGraw Hill from sources believed to be reliable. However, because of the possibility of hu-
man or mechanical error by our sources, McGraw Hill, or others, McGraw Hill does not guarantee the accuracy, adequacy, or
completeness of any information and is not responsible for any errors or omissions or the results obtained from the use of such
information.
TERMS OF USE
This is a copyrighted work and McGraw-Hill Education and its licensors reserve all rights in and to the work. Use of this work
is subject to these terms. Except as permitted under the Copyright Act of 1976 and the right to store and retrieve one copy of the
work, you may not decompile, disassemble, reverse engineer, reproduce, modify, create derivative works based upon, transmit,
distribute, disseminate, sell, publish or sublicense the work or any part of it without McGraw-Hill Education’s prior consent. You
may use the work for your own noncommercial and personal use; any other use of the work is strictly prohibited. Your right to
use the work may be terminated if you fail to comply with these terms.
THE WORK IS PROVIDED “AS IS.” McGRAW-HILL EDUCATION AND ITS LICENSORS MAKE NO GUARANTEES
OR WARRANTIES AS TO THE ACCURACY, ADEQUACY OR COMPLETENESS OF OR RESULTS TO BE OBTAINED
FROM USING THE WORK, INCLUDING ANY INFORMATION THAT CAN BE ACCESSED THROUGH THE WORK VIA
HYPERLINK OR OTHERWISE, AND EXPRESSLY DISCLAIM ANY WARRANTY, EXPRESS OR IMPLIED, INCLUD-
ING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. McGraw-Hill Education and its licensors do not warrant or guarantee that the functions contained in the work will
meet your requirements or that its operation will be uninterrupted or error free. Neither McGraw-Hill Education nor its licensors
shall be liable to you or anyone else for any inaccuracy, error or omission, regardless of cause, in the work or for any damages
resulting therefrom. McGraw-Hill Education has no responsibility for the content of any information accessed through the work.
Under no circumstances shall McGraw-Hill Education and/or its licensors be liable for any indirect, incidental, special, punitive,
consequential or similar damages that result from the use of or inability to use the work, even if any of them has been advised of
the possibility of such damages. This limitation of liability shall apply to any claim or cause whatsoever whether such claim or
cause arises in contract, tort or otherwise.
All-In-One / CompTIA A+™ Certification All-in-One Exam Guide / Meyers / 990-6 / Front Matter
Blind Folio: vii
To Amanda Lee Simpson
~SuperMuse
She walks in beauty, like the night
Of cloudless climes and starry skies;
And all that’s best of dark and bright
Meet in her aspect and her eyes;
Thus mellowed to that tender light
Which heaven to gaudy day denies.
~Lord Byron
00-FM.indd 7 24/09/22 3:03 PM
All-In-One / CompTIA A+™ Certification All-in-One Exam Guide / Meyers / 990-6 / Front Matter
Blind Folio: viii
This page intentionally left blank
00-FM.indd 8 24/09/22 3:03 PM
All-In-One / CompTIA A+™ Certification All-in-One Exam Guide / Meyers / 990-6 / Front Matter
CONTENTS AT A GLANCE
Chapter 1 Safety and Professionalism ................................................ 1
Chapter 2 The Visible Computer .....................................................29
Chapter 3 CPUs ........................................................................67
Chapter 4 RAM ....................................................................... 121
Chapter 5 Firmware ................................................................. 153
Chapter 6 Motherboards ........................................................... 191
Chapter 7 Power Supplies .......................................................... 233
Chapter 8 Mass Storage Technologies ............................................. 273
Chapter 9 Implementing Mass Storage ........................................... 305
Chapter 10 Essential Peripherals .................................................... 369
Chapter 11 Installing and Upgrading Operating Systems ......................... 419
Chapter 12 Working with Operating Systems ...................................... 457
Chapter 13 Users, Groups, and Permissions ........................................ 507
Chapter 14 Maintaining and Optimizing Operating Systems ..................... 551
Chapter 15 Working with the Command-Line Interface .......................... 595
Chapter 16 Troubleshooting Operating Systems .................................. 651
Chapter 17 Display Technologies .................................................... 687
Chapter 18 Essentials of Networking ............................................... 735
Chapter 19 Local Area Networking .................................................. 769
Chapter 20 Wireless Networking .................................................... 829
Chapter 21 The Internet .............................................................. 867
Chapter 22 Virtualization ............................................................. 927
Chapter 23 Portable Computing .................................................... 959
Chapter 24 Mobile Devices ......................................................... 1005
Chapter 25 Maintaining and Securing Mobile Devices ........................... 1055
Chapter 26 Printers and Multifunction Devices ................................... 1101
ix
00-FM.indd 9 24/09/22 3:03 PM
