CompTIA Network+ N10-008 Certification Guide: The ultimate guide to passing the N10-008 exam, 2nd Edition

692 Pages·2022·26.069 MB·English

by  Glen D. Singh

CompTIA Network+ N10-008
Certification Guide
The ultimate guide to passing the N10-008 exam
Glen D. Singh
BIRMINGHAM—MUMBAI
CompTIA Network+ N10-008 Certification Guide
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First published: November 2018
Second edition: October 2022
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I would like to dedicate this book to the people in our society who have always worked hard in their
field of expertise and who have not been recognized for their hard work, commitment, sacrifices, and
ideas, but who, most importantly, believed in themselves when no one else did. This book is for you.
Always have faith in yourself. With commitment, hard work, and focus, anything can be possible.
Never give up, because great things take time.
– Glen D. Singh
Contributors
About the author
Glen D. Singh is an information security author and cybersecurity instructor. His areas of expertise
are cybersecurity operations, offensive security tactics, and enterprise networking. He is a holder
of many certifications, including CEH, CHFI, PAWSP, and 3xCCNA (in CyberOps, Security, and
Routing and Switching).
Glen loves teaching and mentoring others and sharing his wealth of knowledge and experience as
an author. He has written many books that focus on vulnerability discovery and exploitation, threat
detection, intrusion analysis, incident response, network security, and enterprise networking. As an
aspiring game-changer, Glen is passionate about increasing cybersecurity awareness in his homeland,
Trinidad and Tobago.
I would like to thank God, the preserver of the universe, for all His divine grace and guidance. I would
also like to thank Shrilekha Malpani, Sayali Pingale, Neil D’mello, and the wonderful team at Packt
Publishing, who have provided amazing support throughout this journey. To the technical reviewer,
Greg Gardner, thank you for your outstanding contribution to making this an amazing book.
About the reviewer
Greg Gardner is a former U.S. Navy Officer, government consultant, and technology expert. He has
worked in the aerospace industry, at several dot-coms, at several data centers, at the Pentagon, and
with most federal and many state agencies. He received his Master of Information Technology from
Virginia Tech. Greg teaches and writes courseware for A+, Network+, Security+, CND, and CEH.
Greg has taught at the high school and undergraduate levels as well as in private industry. He speaks
at national technology conferences and has written two cyber-espionage novels.
As a long-time member of the IT community, it is my honor to be in the “give back” portion of my
career. As a teacher, technology evangelist, and author, I strive to ensure that individuals who are
making career changes or simply want to understand the fast-moving IT industry are prepared.
Throughout my career, my family and spouse have been my greatest supporters – thank you.

Table of Contents
Preface xvii
Part 1: Networking Concepts
1
Exploring the OSI Model and TCP/IP 3
Technical requirements 4 Understanding TCP/IP 28
The need for networking Data encapsulation concepts 30
models 4
Ethernet header 31
Exploring the OSI model 7 IP headers 32
Application layer 10 TCP header 34
Presentation layer 11 UDP headers 35
Session layer 12 Analyzing network packets 36
Transport layer 12
Summary 45
Network layer 21
Questions 46
Data Link layer 23
Further reading 48
Physical layer 26
2
Network Topologies and Connections 49
Understanding network Client-server 66
topologies 50 Personal area network 66
Types of network topologies 53 Local area network 67
Wide area network 69
Discovering network types 64
Metropolitan area network 72
Peer-to-peer 65
Wireless local area network 73
viii Table of Contents
Campus area network 74 Satellite 81
Storage area network 75 Digital Subscriber Line 82
Software-defined wide area network 76 Cable 84
Multiprotocol label switching 77 Leased line 85
Multipoint generic routing encapsulation 78 Metro optical 85
Identifying service-related Summary 86
entry points 80 Questions 86
Comparing provider links 81 Further reading 88
3
Ethernet Technology and Virtualization 89
Technical requirements 90 Hypervisors 115
Types of connections 90 Virtual networking components 119
Lab – creating a virtual machine 122
Copper cables 90
Fiber optic cables 100 Summary 139
Cable management 106 Questions 140
Ethernet standards 109 Further reading 142
Virtual network concepts 113
4
Understanding IPv4 and IPv6 Addressing 143
Technical requirements 144 Extended unique identifier
(EUI-64) 168
The need for IP addressing 144
Unicast 170
Public versus private address spaces 147
Multicast 172
Network Address Translation (NAT) 150
Broadcast 173
Exploring the structure of Anycast 173
IPv4 and IPv6 156 Link-local 174
Fundamentals of IPv4 156 Loopback 174
Fundamentals of IPv6 165 Unique local address 176
Default gateway 176
Types of IPv4 and IPv6
addresses 167 Delving into IPv6 concepts 178
Automatic Private IP Addressing Tunneling 179
(APIPA) 167 Dual stack 179
Table of Contents ix
Translation 180 Linux operating system 187
Router advertisement 180 Cisco IOS router 190
Stateless Address Autoconfiguration
Summary 192
(SLAAC) 180
Questions 192
Configuring IP addresses 182
Further reading 194
Windows operating system 182
5
Applied IPv4 Subnetting 195
Understanding the purpose Step 1 – determining the appropriate
of the subnet mask 195 IPv4 block 204
Step 2 – creating new subnets
Delving into network prefixes
(subnetworks) 206
and subnet masks 196
Step 3 – assigning subnets to each
Determining the network
network 210
ID 199
Step 4 – performing Variable-Length
Understanding the importance Subnet Masking (VLSM) 213
of subnetting 201
Summary 219
IPv4 subnetting and
Questions 219
VLSM 204
Further reading 221
6
Exploring Network Protocols and Services 223
Technical requirements 224 Network protocol types 247
Network protocols 224 Internet Control Message Protocol 247
File protocols 225 TCP 250
Remote access protocols 231 UDP 250
Email protocols 235 Network services 250
HTTP and HTTPS 240
Network Time Protocol 250
SQL database protocols 242
Dynamic Host Configuration
Lightweight Directory Access
Protocol 252
Protocol 243
DNS 256
Syslog 245
Simple Network Management
Session Initiation Protocol 246
Protocol 260