CompTIA Network+ N10-007 Cert Guide

103 Pages·2017·0.86 MB·English

by  Anthony Sequeira

CompTIA Network+
N10-007 Cert Guide
Anthony Sequeira, CCIE No. 15626
Pearson IT Certifcation
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Anthony Sequeira
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Contents at a Glance
Introduction xxviii
ChAPTEr 1 Computer Network Fundamentals 3
ChAPTEr 2 The OSI Reference Model 31
ChAPTEr 3 Network Components 63
ChAPTEr 4 Ethernet Technology 117
ChAPTEr 5 IPv4 and IPv6 Addresses 153
ChAPTEr 6 Routing IP Packets 205
ChAPTEr 7 Wide Area Networks (WANs) 239
ChAPTEr 8 Wireless Technologies 275
ChAPTEr 9 Network Optimization 305
ChAPTEr 10 Command-Line Tools 337
ChAPTEr 11 Network Management 379
ChAPTEr 12 Network Security 409
ChAPTEr 13 Network Policies and Best Practices 467
ChAPTEr 14 Network Troubleshooting 481
ChAPTEr 15 Final Preparation 529
APPENDIx A Answers to Review Questions 537
APPENDIx B CompTIA Network+ N10-07 Cert Guide Exam Updates 547
Glossary 551
Index 585
ONLINE ELEMENTS:
APPENDIx C Memory Tables
APPENDIx D Memory Tables Answer Key
APPENDIx E Study Planner
Exam Essentials Interactive Study Guide
Key Terms Flash Cards Application
Instructional Videos
Performance-Based Exercises
CompTIA Network+ N10-007 Hands-on Lab Simulator Lite Software
Table of Contents
Introduction xxviii
Chapter 1 Computer Network Fundamentals 3
Foundation Topics 4
Defining a Network 4
The Purpose of Networks 4
Overview of Network Components 5
Networks Defined by Geography 7
LAN 7
WAN 8
WLAN 8
SAN 9
Other Categories of Networks 9
CAN 9
MAN 9
PAN 9
Networks Defined by Topology 10
Physical Versus Logical Topology 10
Bus Topology 11
Ring Topology 13
Star Topology 15
Hub-and-Spoke Topology 16
Full-Mesh Topology 17
Partial-Mesh Topology 18
Wireless Topologies 20
Ad Hoc 20
Infrastructure 20
Mesh 20
Networks Defined by Resource Location 21
Client/Server Networks 21
Peer-to-Peer Networks 22
Real-World Case Study 24
Summary 25
Exam Preparation Tasks 25
vi CompTIA Network+ N10-007 Cert Guide
Review All the Key Topics 25
Complete Tables and Lists from Memory 26
Define Key Terms 26
Complete Chapter 1 Hands-On Lab in Network+ Simulator Lite 26
Additional Resources 26
Review Questions 26
Chapter 2 The OSI reference Model 31
Foundation Topics 32
The Purpose of Reference Models 32
The OSI Model 33
Layer 1: The Physical Layer 35
Layer 2: The Data Link Layer 38
Media Access Control 39
Logical Link Control 40
Layer 3: The Network Layer 41
Layer 4: The Transport Layer 44
Layer 5: The Session Layer 46
Layer 6: The Presentation Layer 47
Layer 7: The Application Layer 48
The TCP/IP Stack 49
Layers of the TCP/IP Stack 49
Common Application Protocols in the TCP/IP Stack 53
Real-World Case Study 56
Summary 57
Exam Preparation Tasks 58
Review All the Key Topics 58
Complete Tables and Lists from Memory 59
Define Key Terms 59
Complete Chapter 2 Hands-On Labs in Network+ Simulator Lite 59
Additional Resources 59
Review Questions 60
Chapter 3 Network Components 63
Foundation Topics 64
Media 64
Contents vii
Coaxial Cable 64
Twisted-Pair Cable 66
Shielded Twisted Pair 66
Unshielded Twisted Pair 67
Plenum Versus Nonplenum Cable 70
Fiber-Optic Cable 70
Multimode Fiber 70
Single-Mode Fiber 72
Fiber Connector Polishing Styles 74
Media Converters 75
Cable Distribution 75
Wireless Technologies 77
Technologies for the Internet of Things 78
Network Infrastructure Devices 79
Hubs 80
Bridges 81
Switches 82
Multilayer Switches 89
Routers 90
Infrastructure Device Summary 91
Specialized Network Devices 91
VPN Concentrators 91
Firewalls 92
DNS Servers 93
DHCP Servers 96
Proxy Servers 98
Content Engines 99
Content Switches 100
Other Specialized Devices 101
Virtual Network Devices 101
Virtual Servers 101
Virtual Routers and Firewalls 103
Virtual Switches 103
Virtual Desktops 104
viii CompTIA Network+ N10-007 Cert Guide
Other Virtualization Solutions 105
Cloud Computing 105
Software-Defined Networking (SDN) 107
Voice over IP Protocols and Components 107
Real-World Case Study 108
Summary 110
Exam Preparation Tasks 110
Review All the Key Topics 110
Complete Tables and Lists from Memory 111
Define Key Terms 112
Complete Chapter 3 Hands-On Labs in Network+ Simulator Lite 112
Additional Resources 112
Review Questions 113
Chapter 4 Ethernet Technology 117
Foundation Topics 118
Principles of Ethernet 118
Ethernet Origins 118
Carrier-Sense Multiple Access/Collision Detect 120
Distance and Speed Limitations 123
Ethernet Switch Features 126
Virtual LANs 126
Switch Configuration for an Access Port 128
Trunks 129
Switch Configuration for a Trunk Port 130
Spanning Tree Protocol 130
Corruption of a Switch’s MAC Address Table 131
Broadcast Storms 132
STP Operation 133
Link Aggregation 136
LACP Configuration 137
Power over Ethernet 138
Port Monitoring 139
Port Mirroring Configuration 141
User Authentication 141
Contents ix
Management Access and Authentication 142
First-Hop Redundancy 144
Other Switch Features 145
Real-World Case Study 145
Summary 146
Exam Preparation Tasks 146
Review All the Key Topics 146
Complete Tables and Lists from Memory 147
Define Key Terms 147
Complete Chapter 4 Hands-On Labs in Network+ Simulator Lite 147
Additional Resources 148
Review Questions 148
Chapter 5 IPv4 and IPv6 Addresses 153
Foundation Topics 154
Binary Numbering 154
Principles of Binary Numbering 154
Converting a Binary Number to a Decimal Number 155
Converting a Decimal Number to a Binary Number 155
Binary Numbering Practice 157
Binary Conversion Exercise 1 157
Binary Conversion Exercise 1: Solution 158
Binary Conversion Exercise 2 158
Binary Conversion Exercise 2: Solution 158
Binary Conversion Exercise 3 159
Binary Conversion Exercise 3: Solution 159
Binary Conversion Exercise 4 160
Binary Conversion Exercise 4: Solution 160
IPv4 Addressing 161
IPv4 Address Structure 161
Classes of Addresses 163
Types of Addresses 165
Unicast 165
Broadcast 165
Multicast 166
x CompTIA Network+ N10-007 Cert Guide
Assigning IPv4 Addresses 166
IP Addressing Components 167
Static Configuration 168
Dynamic Configuration 172
BOOTP 173
DHCP 173
Automatic Private IP Addressing 174
Subnetting 176
Purpose of Subnetting 176
Subnet Mask Notation 177
Subnet Notation: Practice Exercise 1 178
Subnet Notation: Practice Exercise 1 Solution 178
Subnet Notation: Practice Exercise 2 179
Subnet Notation: Practice Exercise 2 Solution 179
Extending a Classful Mask 179
Borrowed Bits 179
Calculating the Number of Created Subnets 180
Calculating the Number of Available Hosts 180
Basic Subnetting Practice: Exercise 1 181
Basic Subnetting Practice: Exercise 1 Solution 181
Basic Subnetting Practice: Exercise 2 182
Basic Subnetting Practice: Exercise 2 Solution 182
Calculating New IP Address Ranges 183
Advanced Subnetting Practice: Exercise 1 186
Advanced Subnetting Practice: Exercise 1 Solution 186
Advanced Subnetting Practice: Exercise 2 187
Advanced Subnetting Practice: Exercise 2 Solution 188
Additional Practice 189
Classless Interdomain Routing 190
IP Version 6 191
Need for IPv6 191
IPv6 Address Structure 192
IPv6 Address Types 193
IPv6 Data Flows 194