Cover
Title Page
Copyright
Dedication
Acknowledgments
1. About the Author
About the Technical Editor
Introduction
1. What Is Network+ Certification?
2. Is This Book for You?
3. How Is This Book Organized?
4. Interactive Online Learning Environment and Test Bank
5. Tips for Taking the Network+ Exam
6. How to Contact the Publisher
7. The Exam Objectives
8. The Network+ Exam Objectives
9. Objective Map
10. Network+ Acronyms
11. Network+ Proposed Hardware and Software
Chapter 1: Domain 1.0: Networking Fundamentals
1. 1.1 Compare and contrast the Open Systems Interconnection (OSI) model layers and encapsulation concepts.
2. 1.2 Explain the characteristics of network topologies and network types.
3. 1.3 Summarize the types of cables and connectors and explain which is the appropriate type for a solution.
4. 1.4 Given a scenario, configure a subnet and use appropriate IP addressing schemes.
5. 1.5 Explain common ports and protocols, their application, and encrypted alternatives.
6. 1.6 Explain the use and purpose of network services.
7. 1.7 Explain basic corporate and datacenter network architecture.
8. 1.8 Summarize cloud concepts and connectivity options.
9. Review Questions
Chapter 2: Domain 2.0: Network Implementations
1. 2.1 Compare and contrast various devices, their features, and their appropriate placement on the network.
2. 2.2 Compare and contrast routing technologies and bandwidth management concepts.
3. 2.3 Given a scenario, configure and deploy common Ethernet switching features.
4. 2.4 Given a scenario, install and configure the appropriate wireless standards and technologies.
5. Review Questions
Chapter 3: Domain 3.0: Network Operations
1. 3.1 Given a scenario, use the appropriate statistics and sensors to ensure network availability.
2. 3.2 Explain the purpose of organizational documents and policies.
3. 3.3 Explain high availability and disaster recovery concepts and summarize which is the best solution.
4. Review Questions
Chapter 4: Domain 4.0: Network Security
1. 4.1 Explain common security concepts.
2. 4.2 Compare and contrast common types of attacks.
3. 4.3 Given a scenario, apply network hardening techniques.
4. 4.4 Compare and contrast remote access methods and security implications.
5. 4.5 Explain the importance of physical security.
6. Review Questions
Chapter 5: Domain 5.0: Network Troubleshooting
1. 5.1 Explain the network troubleshooting methodology.
2. 5.2 Given a scenario, troubleshoot common cable connectivity issues and select the appropriate tools.
3. 5.3 Given a scenario, use the appropriate network software tools and commands.
4. 5.4 Given a scenario, troubleshoot common wireless connectivity issues.
5. 5.5 Given a scenario, troubleshoot general networking issues.
6. Review Questions
Appendix: Answers to Review Questions
1. Chapter 1: Domain 1.0: Networking Fundamentals
2. Chapter 2: Domain 2.0: Network Implementations
3. Chapter 3: Domain 3.0: Network Operations
4. Chapter 4: Domain 4.0: Network Security
5. Chapter 5: Domain 5.0: Network Troubleshooting
Index
Online Test Bank
1. Register and Access the Online Test Bank
End User License Agreement

List of Tables

Chapter 1
1. TABLE 1.1 Fiber-optic cable specifications
2. TABLE 1.2 Cable categories and speeds
3. TABLE 1.3 AND Truth Table
4. TABLE 1.4 Key features of UDP and TCP
Chapter 2
1. TABLE 2.1 Cisco administrative distances
2. TABLE 2.2 DSCP markings
3. TABLE 2.3 IEEE STP link costs
4. TABLE 2.4 802.1D vs. 802.1w port states
Chapter 3
1. TABLE 3.1 Severity levels
2. TABLE 3.2 Uptime for nines of an SLA
Chapter 5
1. TABLE 5.1 Rollover cable pinouts
2. TABLE 5.2 EIA/TIA 568 crossover cabling
3. TABLE 5.3 RF absorption rates by common material

List of Illustrations

Chapter 1
1. FIGURE 1.1 The layers of the OSI
2. FIGURE 1.2 Transport server port binding
3. FIGURE 1.3 Transport client requests
4. FIGURE 1.4 Logical network addressing
5. FIGURE 1.5 Network layer protocol numbers
6. FIGURE 1.6 The Data Link layer and the sublayers within
7. FIGURE 1.7 The LLC sublayer and the Network layer
8. FIGURE 1.8 An Ethernet II frame
9. FIGURE 1.9 MAC address format
10. FIGURE 1.10 OSI layers and PDUs
11. FIGURE 1.11 Encapsulation and decapsulation
12. FIGURE 1.12 UDP segment
13. FIGURE 1.13 TCP three-way handshake
14. FIGURE 1.14 TCP sliding window example
15. FIGURE 1.15 TCP segment
16. FIGURE 1.16 An IP packet
17. FIGURE 1.17 A typical star topology
18. FIGURE 1.18 A logical ring topology
19. FIGURE 1.19 A physical topology of a full mesh
20. FIGURE 1.20 A comparison of bus networks to SCSI disk networks
21. FIGURE 1.21 A hybrid topology
22. FIGURE 1.22 Typical LAN
23. FIGURE 1.23 Typical WLAN
24. FIGURE 1.24 Typical WAN
25. FIGURE 1.25 Typical SAN
26. FIGURE 1.26 Example of multiple GRE tunnels
27. FIGURE 1.27 Hypervisor types
28. FIGURE 1.28 A DSL network
29. FIGURE 1.29 The broadband cable network
30. FIGURE 1.30 A typical satellite network
31. FIGURE 1.31 A common UTP cable
32. FIGURE 1.32 A common STP cable
33. FIGURE 1.33 Coax cable elements
34. FIGURE 1.34 Cross section of solid core vs. stranded core cables
35. FIGURE 1.35 A typical fiber-optic cable
36. FIGURE 1.36 An RJ-45 connector
37. FIGURE 1.37 An RJ-11 connector
38. FIGURE 1.38 A BNC connector
39. FIGURE 1.39 An F-connector
40. FIGURE 1.40 An LC connector
41. FIGURE 1.41 An ST connector
42. FIGURE 1.42 An SC connector
43. FIGURE 1.43 APC vs. UPC
44. FIGURE 1.44 An MTRJ connector
45. FIGURE 1.45 A typical SFP transceiver
46. FIGURE 1.46 A QSFP transceiver
47. FIGURE 1.47 A media converter
48. FIGURE 1.48 How bidirectional transceivers work
49. FIGURE 1.49 A 66 block panel
50. FIGURE 1.50 A 110 block panel
51. FIGURE 1.51 A Krone block panel
52. FIGURE 1.52 A typical patch panel
53. FIGURE 1.53 A typical fiber distribution panel
54. FIGURE 1.54 Cable management example
55. FIGURE 1.55 TIA/EIA 568A and 568B wiring standard
56. FIGURE 1.56 Straight-through cable wiring
57. FIGURE 1.57 Crossover cable wiring
58. FIGURE 1.58 The static NAT process
59. FIGURE 1.59 Dynamic NAT process
60. FIGURE 1.60 Port address translation process
61. FIGURE 1.61 Port forwarding example
62. FIGURE 1.62 A broadcast frame and IP packet
63. FIGURE 1.63 A unicast frame and packet
64. FIGURE 1.64 IPv6 address example
65. FIGURE 1.65 Breakdown of an IPv6 global unicast address
66. FIGURE 1.66 A link-local prefix
67. FIGURE 1.67 6to4 tunneling
68. FIGURE 1.68 Dual stack example
69. FIGURE 1.69 The DHCP DORA process
70. FIGURE 1.70 The SLAAC process
71. FIGURE 1.71 Padding process of EUI-64 addresses
72. FIGURE 1.72 Bit flipping for EUI-64 addresses
73. FIGURE 1.73 The Windows DHCP/static IP address dialog box
74. FIGURE 1.74 The ANDing process
75. FIGURE 1.75 Subnetting of an IP address
76. FIGURE 1.76 Subnet IDs
77. FIGURE 1.77 Host ID calculations
78. FIGURE 1.78 Creating a subnet calculator
79. FIGURE 1.79 The subnet calculator
80. FIGURE 1.80 Subnetting for hosts
81. FIGURE 1.81 Valid host IDs for a 13-bit host ID‘
82. FIGURE 1.82 A variable-length subnet mask (VLSM) network
83. FIGURE 1.83 VLSM worksheet
84. FIGURE 1.84 A CIDR calculator
85. FIGURE 1.85 Typical FHRP setup
86. FIGURE 1.86 FTP active and passive modes
87. FIGURE 1.87 An overview of the DHCP process
88. FIGURE 1.88 GRE tunnel example
89. FIGURE 1.89 A GRE Packet
90. FIGURE 1.90 ESP Packet
91. FIGURE 1.91 AH packet
92. FIGURE 1.92 AH and ESP
93. FIGURE 1.93 DNS hierarchy
94. FIGURE 1.94 Primary and secondary DNS servers
95. FIGURE 1.95 DNS queries
96. FIGURE 1.96 The Windows DHCP management console
97. FIGURE 1.97 DHCP Components
98. FIGURE 1.98 The DHCP client lease life cycle
99. FIGURE 1.99 An example of a network router configured with an IP helper
100. FIGURE 1.100 An example of a DHCP relay agent configured on a server
101. FIGURE 1.101 Three-tier vs. collapsed core model
102. FIGURE 1.102 Software-defined networking
103. FIGURE 1.103 A typical spine-leaf network
104. FIGURE 1.104 Data center traffic
105. FIGURE 1.105 A typical storage area network
106. FIGURE 1.106 A comparison between separate SAN and network switching vs. a c...
107. FIGURE 1.107 A private cloud
108. FIGURE 1.108 A public cloud
109. FIGURE 1.109 A hybrid cloud
110. FIGURE 1.110 A community cloud
Chapter 2
1. FIGURE 2.1 Four-port active hub
2. FIGURE 2.2 Hubs, repeaters, and the OSI model
3. FIGURE 2.3 Typical managed switches
4. FIGURE 2.4 Switches and the OSI model
5. FIGURE 2.5 Typical edge router
6. FIGURE 2.6 Routers and the OSI model
7. FIGURE 2.7 Layer 3 switches and the OSI model
8. FIGURE 2.8 WAPs with internal and external antennas
9. FIGURE 2.9 Access points and the OSI model
10. FIGURE 2.10 Wireless LAN controller functionality
11. FIGURE 2.11 Overview of a proxy server implementation
12. FIGURE 2.12 Overview of a reverse proxy server implementation
13. FIGURE 2.13 UC platform and VoIP gateway
14. FIGURE 2.14 VoIP gateway acting as the PSTN
15. FIGURE 2.15 VoIP gateway serving POTS
16. FIGURE 2.16 A typical hardware firewall appliance
17. FIGURE 2.17 Firewalls and the OSI model
18. FIGURE 2.18 NGFW and the OSI model
19. FIGURE 2.19 Typical wired VoIP phone
20. FIGURE 2.20 Network print process
21. FIGURE 2.21 Decentralized print process
22. FIGURE 2.22 Peer-to-peer print process
23. FIGURE 2.23 Centralized print process
24. FIGURE 2.24 Access control schematic
25. FIGURE 2.25 HVAC schematic
26. FIGURE 2.26 SCADA systems
27. FIGURE 2.27 The basic routing process
28. FIGURE 2.28 Two-router network
29. FIGURE 2.29 Default routing example
30. FIGURE 2.30 EIGRP tables
31. FIGURE 2.31 A traffic shaping example
32. FIGURE 2.32 An 802.1Q frame
33. FIGURE 2.33 Hubs, switches, and collision domains
34. FIGURE 2.34 Two broadcast domains connected with a router
35. FIGURE 2.35 The MAC address learning process
36. FIGURE 2.36 Duplicate unicast packets
37. FIGURE 2.37 A broadcast storm
38. FIGURE 2.38 Three switches with redundant links
39. FIGURE 2.39 Three switches with STP calculated
40. FIGURE 2.40 Backup and alternate ports
41. FIGURE 2.41 A flat switched network
42. FIGURE 2.42 A network using VLANs
43. FIGURE 2.43 Routed VLANs
44. FIGURE 2.44 An 802.1Q frame
45. FIGURE 2.45 802.1Q trunk link and broadcasts
46. FIGURE 2.46 Untagging and tagging ports
47. FIGURE 2.47 Voice VLAN ports
48. FIGURE 2.48 LACP port aggregation between two switches
49. FIGURE 2.49 The 2.4 GHz channel plan
50. FIGURE 2.50 The 5 GHz channel plan
51. FIGURE 2.51 802.11ac data rates vs. distance
52. FIGURE 2.52 Channel bonding in the 5 GHz radio band
53. FIGURE 2.53 MIMO wireless example
54. FIGURE 2.54 A Yagi antenna radiation pattern example
55. FIGURE 2.55 An omnidirectional antenna radiation pattern example
56. FIGURE 2.56 Ad hoc wireless network example
57. FIGURE 2.57 Basic service set example
58. FIGURE 2.58 Extended service set example
59. FIGURE 2.59 Mesh WAP example
60. FIGURE 2.60 Wireless authentication for 802.1x/EAP
Chapter 3
1. FIGURE 3.1 Bandwidth vs. utilization
2. FIGURE 3.2 Latency vs. time
3. FIGURE 3.3 Jitter vs. time
4. FIGURE 3.4 SNMP components
5. FIGURE 3.5 SNMP monitor graph
6. FIGURE 3.6 SNMP get and trap methods
7. FIGURE 3.7 Example of an Elasticsearch with Kibana
8. FIGURE 3.8 Event Viewer filtering
9. FIGURE 3.9 Anatomy of a syslog message
10. FIGURE 3.10 Anatomy of NetFlow
11. FIGURE 3.11 Network management station availability
12. FIGURE 3.12 Policies, processes, and procedures
13. FIGURE 3.13 A logical diagram
14. FIGURE 3.14 A physical diagram
15. FIGURE 3.15 A conceptual logical diagram
16. FIGURE 3.16 A floor plan drawing
17. FIGURE 3.17 A rack diagram
18. FIGURE 3.18 Typical wiring diagram
19. FIGURE 3.19 Network cable label wrap
20. FIGURE 3.20 Typical site survey report
21. FIGURE 3.21 NIST Cybersecurity Framework
22. FIGURE 3.22 Scaling out a web server
23. FIGURE 3.23 Typical multipath iSCSI setup
24. FIGURE 3.24 Redundant team of NICs
25. FIGURE 3.25 RAID-1 (mirroring)
26. FIGURE 3.26 RAID-5 (striping with parity)
27. FIGURE 3.27 RAID-6 (striping with two parity schemes)
28. FIGURE 3.28 Example of a high availability cluster
29. FIGURE 3.29 Redundancy in a network
30. FIGURE 3.30 First-hop redundancy protocols (FHRPs)
31. FIGURE 3.31 FHRP and Firewalls,
32. FIGURE 3.32 Hot and cold aisles in a data center
33. FIGURE 3.33 Internet service provider connections
34. FIGURE 3.34 Typical HSRP setup
Chapter 4
1. FIGURE 4.1 The CIA triad
2. FIGURE 4.2 Role-based access
3. FIGURE 4.3 Example of defense in depth
4. FIGURE 4.4 A typical DMZ with two firewalls
5. FIGURE 4.5 A typical screened subnet with two routers
6. FIGURE 4.6 A typical screened subnet with one firewall
7. FIGURE 4.7 NAC and 802.1X
8. FIGURE 4.8 Single sign-on example
9. FIGURE 4.9 AAA bank analogy
10. FIGURE 4.10 802.1X switch control
11. FIGURE 4.11 NIST CSF processes
12. FIGURE 4.12 Typical DoS attack
13. FIGURE 4.13 Typical reflective attack
14. FIGURE 4.14 Typical amplified attack
15. FIGURE 4.15 Components of a DDoS attack
16. FIGURE 4.16 On-path attack
17. FIGURE 4.17 Switch spoofing
18. FIGURE 4.18 Double-tagging of VLANs
19. FIGURE 4.19 Example of MAC spoofing
20. FIGURE 4.20 Example of a rogue DHCP server
21. FIGURE 4.21 Evil twin attack
22. FIGURE 4.22 Brute-force password attacks
23. FIGURE 4.23 Example of MAC spoofing
24. FIGURE 4.24 Example of IP spoofing
25. FIGURE 4.25 Private VLAN terminology
26. FIGURE 4.26 A typical corporate network
27. FIGURE 4.27 Wireless authentication for 802.1X/EAP
28. FIGURE 4.28 An inline captive portal
29. FIGURE 4.29 An out-of-band captive portal
30. FIGURE 4.30 A typical site-to-site VPN
31. FIGURE 4.31 A typical host-to-site VPN
32. FIGURE 4.32 Client-to-site VPN connection
33. FIGURE 4.33 A modem for out-of-band management
34. FIGURE 4.34 A router console connection
35. FIGURE 4.35 A typical PIR sensor
36. FIGURE 4.36 A typical biometric reader
37. FIGURE 4.37 A common access control vestibule setup
Chapter 5
1. FIGURE 5.1 A router console connection
2. FIGURE 5.2 A typical Ethernet jack
3. FIGURE 5.3 A typical Ethernet switch
4. FIGURE 5.4 Fiber-optic transceivers
5. FIGURE 5.5 A typical pair of cable crimpers
6. FIGURE 5.6 A typical punch-down tool
7. FIGURE 5.7 A punch-down tool punching a wire into a patch panel
8. FIGURE 5.8 A tone generator and tracing probe
9. FIGURE 5.9 An LC fiber-optic loopback plug
10. FIGURE 5.10 An optical time-domain reflectometer
11. FIGURE 5.11 A typical multimeter
12. FIGURE 5.12 A cable tester pair
13. FIGURE 5.13 A time-domain reflectometer
14. FIGURE 5.14 A cable certifier
15. FIGURE 5.15 NETSCOUT AirMagnet spectrum analyzer
16. FIGURE 5.16 Wire cutters
17. FIGURE 5.17 Wire snips
18. FIGURE 5.18 Typical cable strippers
19. FIGURE 5.19 Android Wifi analyzer
20. FIGURE 5.20 Protocol analyzer of a TCP packet
21. FIGURE 5.21 A NetFlow analyzer
22. FIGURE 5.22 A typical TFTP server
23. FIGURE 5.23 A typical terminal emulator
24. FIGURE 5.24 A typical IP scanner
25. FIGURE 5.25 Distance vs. speed
26. FIGURE 5.26 Omnidirectional vs. directional antennas
27. FIGURE 5.27 5 GHz channels
28. FIGURE 5.28 2.4 GHz channels
29. FIGURE 5.29 802.11 Association process
30. FIGURE 5.30 Limited connectivity
31. FIGURE 5.31 Collisions
32. FIGURE 5.32 Broadcast storms
33. FIGURE 5.33 Asymmetrical routing example
34. FIGURE 5.34 Redundant switch paths
35. FIGURE 5.35 Routing loop example
36. FIGURE 5.36 Incorrect /16 netmask in a /24 network
37. FIGURE 5.37 Incorrect /24 netmask in a /16 network
38. FIGURE 5.38 An untrusted SSL certificate warning
39. FIGURE 5.39 A self-signed certificate
40. FIGURE 5.40 The DNS query process
41. FIGURE 5.41 Historical performance charting

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Published by John Wiley & Sons, Inc., Hoboken, New Jersey.

Published simultaneously in Canada.

ISBN: 978-1-119-80695-0
ISBN: 978-1-119-80697-4 (ebk.)
ISBN: 978-1-119-80696-7 (ebk.)

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Acknowledgments

I would like to thank my wife, Teresa. She has had so much patience during the writing of this book. I would also like to thank the many people who made this book possible, including the following: Kenyon Brown at Wiley Publishing for giving me the opportunity to write this book; Kim Wimpsett, for working with me as the developmental editor and making the entire project seamless; Christine O’Connor, for helping with production editing; Buzz Murphy, for serving as technical reviewer to ensure I didn't miss any details; Judy Flynn, for her many edits that helped make this book a polished product; and Saravanan Dakshinamurthy, for helping make sure the content was perfect. Thank you to the many other people I've never met who worked behind the scenes to make this book a success.

About the Author

Jon Buhagiar, BS/ITM, MCSE, CCNA, is an information technology professional with two decades of experience in higher education and the private sector.

Jon currently serves as supervisor of network operations at Pittsburgh Technical College. In this role, he manages data center and network infrastructure operations and IT operations and is involved in project management of projects supporting the quality of education at the college. He also serves as an adjunct instructor in the college's School of Information Technology department, where he has taught courses for Microsoft and Cisco certification. Jon has been an instructor for 23+ years with several colleges in the Pittsburgh area, since the introduction of the Windows NT MCSE in 1998.

Jon earned a bachelor of science degree in Information Technology Management from Western Governors University. He also achieved an associate degree in Business Management from Pittsburgh Technical College. He has recently become a Windows Server 2016 Microsoft Certified Solutions Expert (MCSE) and earned the Cisco Certified Network Associate (CCNA) certification. Other certifications he holds include CompTIA Network+, CompTIA A+, and CompTIA Project+.

In addition to his professional and teaching roles, he has authored CCNA Routing and Switching Practice Tests: Exam 100-105, Exam 200-105, and Exam 200-125; CompTIA Network+ Review Guide: Exam N10-007, Fourth Edition; CompTIA A+ Deluxe Study Guide: Exam 220-1002 (all Sybex, 2016); and CCNA Certification Practice Tests: Exam 200-301, First Edition. He has also served as the technical editor for the second edition of the CompTIA Cloud+ Study Guide (Sybex, 2016), CCNA Security Study Guide: Exam 210-260 (Sybex, 2018), CCNA Cloud Complete Study Guide: Exam 210-451 and Exam 210-455 (Sybex, 2018), CCNP Enterprise Certification Study Guide: Implementing (Sybex, 2018), and CCNP Enterprise Certification Study Guide: Implementing and Operating Cisco Enterprise Network Core Technologies: Exam 350-401 (Sybex, 2020). He has spoken at several conferences about spam and email systems. He is an active radio electronics hobbyist and has held a ham radio license for the past 18 years, KB3KGS. He experiments with electronics and has a strong focus on the Internet of Things (IoT).

CompTIA^® Network+^®
Review Guide

Exam N10-008

Acknowledgments

About the Author

About the Technical Editor