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Professor Messer’s
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Network+ Course Notes
James “Professor” Messer
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Professor Messer’s CompTIA N10-009 Network+ Course Notes
Written by James “Professor” Messer
Copyright © 2024 by Messer Studios, LLC
https://www.ProfessorMesser.com
All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means,
electronic or mechanical, including photocopying, recording, or by any information storage and retrieval
system, without written permission from the publisher.
First Edition: June 2024
This is version 1.2
Trademark Acknowledgments
All product names and trademarks are the property of their respective owners,
and are in no way associated or affiliated with Messer Studios LLC.
“Professor Messer” is a registered trademark of Messer Studios LLC.
“CompTIA” and “Network+” are registered trademarks of CompTIA, Inc.
Warning and Disclaimer
This book is designed to provide information about the CompTIA Network+ certification exam. However,
there may be typographical and/or content errors. Therefore, this book should serve only as a general
guide and not as the ultimate source of subject information. The author shall have no liability or
responsibility to any person or entity regarding any loss or damage incurred, or alleged to have incurred,
directly or indirectly, by the information contained in this book.
CompTIA Network+ Test Sheet with Answers
CompTIA A+ 220-901/1101/1102 Course Notes - Professor Messer
Contents
1.0 - Networking Concepts
1.1 - Understanding the OSI Model
1.1 - Networking Devices
1.2 - Networking Functions
1.3 - Designing the Cloud
1.3 - Cloud Models
1.4 - Introduction to IP
1.4 - Common Ports
1.4 - Other Useful Protocols
1.4 - Network Communication
1.5 - Wireless Networking
1.5 - Ethernet Standards
1.5 - Optical Fiber
1.5 - Copper Cabling
1.5 - Network Transceivers
1.5 - Fiber Connectors
1.6 - Network Topologies
1.6 - Network Architecture
1.7 - Binary Math
1.7 - IPv4 Addressing
1.7 - Classful Subnetting
1.7 - IPv4 Subnet Masks
1.7 - Calculating IPv4 Subnets and Hosts
1.7 - Magic Number Subnetting
1.7 - Seven Second Subnetting
1.8 - Software Defined Networking
1.8 - Virtual Extensible LAN
1.8 - Zero Trust
1.8 - Infrastructure as Code
1.8 - IPv6 Addressing
CompTIA A+ 220-1101 Course Notes - Professor Messer
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Security+ Exam Guide: Ace Your CompTIA Certification
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