Contents

Introduction

Assessment Test

Chapter 1: Introduction to Networks

First Things First: What’s a Network?
Physical Network Topologies
Topology Selection, Backbones, and Segments
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 2: The Open Systems Interconnection Specifications

Internetworking Models
The OSI Reference Model
Introduction to Encapsulation
Modulation Techniques
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 3: Networking Topologies, Connectors, and Wiring Standards

Physical Media
Cable Properties
Wiring Standards
Installing Wiring Distributions
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 4: The Current Ethernet Specifications

Network Basics
Ethernet Basics
Ethernet at the Data Link Layer
Ethernet at the Physical Layer
Ethernet over Other Standards (IEEE 1905.1-2013)
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 5: Networking Devices

Common Network Connectivity Devices
Other Specialized Devices
Planning and Implementing a Basic SOHO Network Using Network Segmentation
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 6: Introduction to the Internet Protocol

Introducing TCP/IP
Data Encapsulation
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 7: IP Addressing

IP Terminology
The Hierarchical IP Addressing Scheme
IPv4 Address Types
Internet Protocol Version 6 (IPv6)
Summary
Exam Essentials
Written Labs
Written Lab 7.1
Written Lab 7.2
Written Lab 7.3
Review Questions

Chapter 8: IP Subnetting, Troubleshooting IP, and Introduction to NAT

Subnetting Basics
Troubleshooting IP Addressing
Introduction to Network Address Translation (NAT)
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 9: Introduction to IP Routing

Routing Basics
The IP Routing Process
Testing Your IP Routing Understanding
Static and Dynamic Routing
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 10: Routing Protocols

Routing Protocol Basics
Distance Vector Routing Protocols
Link State Routing Protocols
High Availability
Advanced IPv6 Concepts
IPv6 Routing Protocols
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 11: Switching and Virtual LANs

Networking Before Layer 2 Switching
Switching Services
Spanning Tree Protocol
Virtual LANs
VLAN Trunking Protocol
Two Additional Advanced Features of Switches
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 12: Wireless Networking

Introduction to Wireless Technology
Cellular
The 802.11 Standards
Comparing 802.11 Standards
Wireless Network Components
Installing a Wireless Network
Site Survey
Wireless Security
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 13: Authentication and Access Control

Security Filtering
Managing User Account and Password Security
User-Authentication Methods
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 14: Network Threats and Mitigation

Recognizing Security Threats
Vulnerabilities
Understanding Mitigation Techniques
Policies and Procedures
Anti-malware Software
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 15: Physical Security and Risk

Using Hardware and Software Security Devices
Defining Firewalls
Firewall Technologies
Firewalls at the Application Layer vs. the Network Layer
Scanning Services and Other Firewall Features
Intrusion Detection and Prevention Systems
VPN Concentrators
Understanding Problems Affecting Device Security
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 16: Wide Area Networks

What’s a WAN?
T-Series Connections
Transmission Media
Broadband Services
Wireless WAN Technologies
WAN Protocols
WAN Troubleshooting
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 17: Troubleshooting Tools

Protocol Analyzers
Throughput Testers
Connectivity Software
Using traceroute
Using the ping Utility
Using the Address Resolution Protocol
Using the nslookup Utility
Resolving Names with the Hosts Table
Using the Mtr Command (pathping)
Using the route Command
Using the nbtstat Utility
Using the netstat Utility
Using tcpdump
Using the File Transfer Protocol
Using the Telnet Utility
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 18: Software and Hardware Tools

Understanding Network Scanners
Baseline
Network Monitoring and Logging
Identifying Hardware Tools
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 19: Network Troubleshooting

Narrowing Down the Problem
Troubleshooting Steps
Troubleshooting Tips
Summary
Exam Essentials
Written Lab
Review Questions

Chapter 20: Management, Monitoring, and Optimization

Managing Network Documentation
Network Monitoring
Network Optimization
Summary
Exam Essentials
Written Lab
20.6
Review Questions

Appendix A: Answers to Written Labs

Appendix B: Answers to Review Questions

Appendix C: Subnetting Class A

Index

Advert

EULA

List of Tables

Chapter 3

Table 3.1

Chapter 4

Table 4.1
Table 4.2
Table 4.3
Table 4.4

Chapter 5

Table 5.1

Chapter 6

Table 6.1
Table 6.2

Chapter 7

Table 7.1
Table 7.2
Table 7.3

Chapter 8

Table 8.1
Table 8.2
Table 8.3
Table 8.4

Chapter 10

Table 10.1
Table 10.2
Table 10.3

Chapter 12

Table 12.1
Table 12.2
Table 12.3

Chapter 15

Table 15.1

Chapter 16

Table 16.1
Table 16.2

Chapter 17

Table 17.1
Table 17.2
Table 17.3
Table 17.4
Table 17.5
Table 17.6
Table 17.7
Table 17.8

Chapter 18

Table 18.1

Chapter 20

Table 20.1
Table 20.2

List of Illustrations

Chapter 1

Figure 1.1 A basic network
Figure 1.2 Two separate LANs (workgroups)
Figure 1.3 A router connects LANs.
Figure 1.4 A network populated with servers and workstations
Figure 1.5 An internetwork
Figure 1.6 Multiprotocol Label Switching layout
Figure 1.7 A peer-to-peer network
Figure 1.8 A client-server network
Figure 1.9 A typical bus network’s physical topology
Figure 1.10 Typical star topology with a hub
Figure 1.11 A typical ring topology
Figure 1.12 A typical mesh topology
Figure 1.13 Three point-to-point connections
Figure 1.14 A point-to-multipoint network, example 1
Figure 1.15 A point-to-multipoint network, example 2
Figure 1.16 A simple hybrid network
Figure 1.17 Backbone and segments on a network

Chapter 2

Figure 2.1 Layer functions
Figure 2.2 The upper layers
Figure 2.3 The lower layers
Figure 2.4 Establishing a connection-oriented session
Figure 2.5 Transmitting segments with flow control
Figure 2.6 Windowing
Figure 2.7 Transport layer reliable delivery
Figure 2.8 Routing table used in a router
Figure 2.9 A router in an internetwork
Figure 2.10 Data Link layer
Figure 2.11 Data encapsulation

Chapter 3

Figure 3.1 A stripped-back thinnet cable
Figure 3.2 Male and female BNC connectors
Figure 3.3 Cat 5e UTP cable
Figure 3.4 RJ-11 and RJ-45 connectors
Figure 3.5 The pin-outs in an RJ-45 Connector, T568B standard
Figure 3.6 UPC and APC connectors
Figure 3.7 An example of an ST connector
Figure 3.8 A sample SC connector
Figure 3.9 Bidirectional communication
Figure 3.10 A sample MT-RJ fiber-optic connector
Figure 3.11 A sample LC fiber-optic connector
Figure 3.12 Single-mode fiber to Ethernet
Figure 3.13 Multimode fiber to Ethernet
Figure 3.14 Fiber to coaxial
Figure 3.15 Single-mode to multimode fiber
Figure 3.16 RS-232 cable ends
Figure 3.17 A USB port
Figure 3.18 A USB plug
Figure 3.19 T568A wired standard
Figure 3.20 T568B wired standard
Figure 3.21 Straight-through Ethernet cable
Figure 3.22 Crossover Ethernet cable
Figure 3.23 An inexpensive cable tester
Figure 3.24 UTP gigabit crossover Ethernet cable
Figure 3.25 Rolled Ethernet cable
Figure 3.26 A T1 crossover cable
Figure 3.27 A 110 block

Chapter 4

Figure 4.1 The basic network
Figure 4.2 CSMA/CD
Figure 4.3 Shorter and longer wavelengths
Figure 4.4 Ethernet addressing using MAC addresses
Figure 4.5 802.3 and Ethernet frame formats in bytes
Figure 4.6 Ethernet Physical layer specifications
Figure 4.7 Powerline adapter sets
Figure 4.8 Basic BPL installation
Figure 4.9 Ethernet over HDMI

Chapter 5

Figure 5.1 Network interface card
Figure 5.2 A typical hub
Figure 5.3 Bridges break up collision domains.
Figure 5.4 Typical Ethernet switch
Figure 5.5 Router connected to the Internet, providing access for hosts
Figure 5.6 Example of firewalls with a DMZ
Figure 5.7 Example of an AP in a network
Figure 5.8 DHCP client sends broadcasts looking for a DHCP server.
Figure 5.9 A Windows DHCP server's scope options
Figure 5.10 DHCP client request to a DHCP server
Figure 5.11 DHCP client parameter request list
Figure 5.12 DHCP server response
Figure 5.13 Configuring a DHCP relay
Figure 5.14 DNS resolution example
Figure 5.15 A Windows DNS server
Figure 5.16 A DNS query to www.lammle.com
Figure 5.17 The DNS answer to our query
Figure 5.18 Internal and external DNS
Figure 5.19 A proxy server
Figure 5.20 Encryption appliances
Figure 5.21 Content filtering appliance
Figure 5.22 Analog modem
Figure 5.23 Packet shaper
Figure 5.24 VPN concentrator
Figure 5.25 Media converter
Figure 5.26 A switch can replace the hub, breaking up collision domains.
Figure 5.27 Routers create an internetwork.
Figure 5.28 Internetworking devices
Figure 5.29 Switched networks creating an internetwork
Figure 5.30 A router in an internetwork
Figure 5.31 A switch in an internetwork
Figure 5.32 A hub in a network

Chapter 6

Figure 6.1 The DoD and OSI models
Figure 6.2 The TCP/IP protocol suite
Figure 6.3 DHCP client four-step process
Figure 6.4 TCP segment format
Figure 6.5 UDP segment
Figure 6.6 Port numbers for TCP and UDP
Figure 6.7 IPv4 header
Figure 6.8 ICMP error message is sent to the sending host from the remote router.
Figure 6.9 Local ARP broadcast
Figure 6.10 RARP broadcast example
Figure 6.11 Data encapsulation
Figure 6.12 PDU and layer addressing
Figure 6.13 Port numbers at the Transport layer

Chapter 7

Figure 7.1 Summary of the three classes of networks
Figure 7.2 IPv6 address example
Figure 7.3 EUI-64 interface ID assignment
Figure 7.4 A 6to4 tunnel

Chapter 8

Figure 8.1 Implementing a Class C /25 logical network
Figure 8.2 Implementing a Class C /26 logical network
Figure 8.3 Basic IP troubleshooting
Figure 8.4 IP address problem 1
Figure 8.5 IP address problem 2
Figure 8.6 Find the valid host.
Figure 8.7 Find the valid host #2.
Figure 8.8 Find the valid host address #3.
Figure 8.9 Find the valid subnet mask.
Figure 8.10 Where to configure NAT
Figure 8.11 Basic NAT translation
Figure 8.12 NAT overloading example (PAT)

Chapter 9

Figure 9.1 A simple routing example
Figure 9.2 IP routing example using two hosts and one router
Figure 9.3 Frame used from Host_A to the Lab_A router when Host_B is pinged
Figure 9.4 IP routing example 1
Figure 9.5 IP routing example 2
Figure 9.6 Routing options
Figure 9.7 Dynamic routing options
Figure 9.8 DV and LS routing protocols
Figure 9.9 Hybrid routing

Chapter 10

Figure 10.1 Routing flow tree
Figure 10.2 The internetwork with distance vector routing
Figure 10.3 Converged routing tables
Figure 10.4 Typical classful network
Figure 10.5 Classless network design
Figure 10.6 A discontiguous network
Figure 10.7 EIGRP tables
Figure 10.8 Border Gateway Protocol (BGP)
Figure 10.9 OSPF design example
Figure 10.10 IS-IS network terminology
Figure 10.11 FHRPs use a virtual router with a virtual IP address and virtual MAC address.
Figure 10.12 HSRP active and standby routers
Figure 10.13 Example of HSRP active and standby routers swapping interfaces
Figure 10.14 HSRP Hellos
Figure 10.15 First two steps to IPv6 auto-configuration
Figure 10.16 IPv6 auto-configuration example
Figure 10.17 IPv6 neighbor discovery: neighbor solicitation message

Chapter 11

Figure 11.1 A network before switching
Figure 11.2 The first switched LAN
Figure 11.3 The typical switched network design
Figure 11.4 Switches create private domains.
Figure 11.5 Empty forward/filter table on a switch
Figure 11.6 How switches learn hosts’ locations
Figure 11.7 Forward/filter table
Figure 11.8 Broadcast storm
Figure 11.9 Multiple frame copies
Figure 11.10 Distributed switching
Figure 11.11 A switched network with switching loops
Figure 11.12 An optimal hierarchical switch design
Figure 11.13 Flat network structure
Figure 11.14 The benefit of a switched network
Figure 11.15 Physical LANs connected to a router
Figure 11.16 Switches removing the physical boundary
Figure 11.17 Access and trunk links in a switched network
Figure 11.18 IEEE 802.1Q encapsulation with and without the 802.1Q tag
Figure 11.19 VTP modes
Figure 11.20 Port security on a switch port restricts port access by MAC address.
Figure 11.21 MAC flooding attack
Figure 11.22 Before and after port channels
Figure 11.23 Switched Ethernet ports can provide power to devices.
Figure 11.24 An external power injector used for PoE
Figure 11.25 Wireless bridge power injector
Figure 11.26 Switches send frames out the destination port only.
Figure 11.27 Place a hub between two hosts to troubleshoot.
Figure 11.28 Port spanning/mirroring

Chapter 12

Figure 12.1 Unlicensed frequencies
Figure 12.2 Wireless LAN history
Figure 12.3 802.11b CSMA/CA
Figure 12.4 ISM 2.4 GHz channels
Figure 12.5 U-NII 5 GHz band has 12 non-overlapping channels (US)
Figure 12.6 Standards for spectrums and speeds
Figure 12.7 Range comparisons of 802.11 standards
Figure 12.8 A wireless access point
Figure 12.9 A wireless NIC
Figure 12.10 A wireless network in ad hoc mode
Figure 12.11 A wireless network in infrastructure mode
Figure 12.12 Extended service set (ESS)
Figure 12.13 Stand-alone and controller-based wireless networks
Figure 12.14 LWAPP
Figure 12.15 Mobile hot spot
Figure 12.16 iPhone hot spot
Figure 12.17 Basic coverage
Figure 12.18 Enterprise design
Figure 12.19 A multifloor installation
Figure 12.20 A heat map of a building
Figure 12.21 RADIUS authentication server

Chapter 13

Figure 13.1 Two networks with an ACL-enabled router
Figure 13.2 A tunnel through the Internet
Figure 13.3 Example of using a VPN network
Figure 13.4 The SSL connection process
Figure 13.5 GRE encapsulation
Figure 13.6 TCP/IP packet in IPSec transport mode with AH
Figure 13.7 TCP/IP packet in IPSec tunnel mode with ESP
Figure 13.8 Public-key encryption
Figure 13.9 The PGP encryption system
Figure 13.10 A typical remote-access connection between a remote user and a server
Figure 13.11 ILO port
Figure 13.12 The certificate authority process
Figure 13.13 PKI in action
Figure 13.14 The Kerberos authentication process
Figure 13.15 TACACS+ login and logout sequence
Figure 13.16 CHAP authentication process

Chapter 14

Figure 14.1 Unreachable gateway
Figure 14.2 Botnet
Figure 14.3 Smurf attack in progress
Figure 14.4 A simple DoS/SYN flood attack
Figure 14.5 DNS amplification attack
Figure 14.6 IP4 packets tunneled in DNS
Figure 14.7 VLAN hopping
Figure 14.8 An email virus spreading rapidly
Figure 14.9 Multipartite virus
Figure 14.10 Wireshark
Figure 14.11 Man-in-the-middle attack
Figure 14.12 A common DMZ configuration
Figure 14.13 Automating Windows Update
Figure 14.14 Open case warning in the BIOS

Chapter 15

Figure 15.1 A typical secured network
Figure 15.2 Two networks with an ACL-enabled router
Figure 15.3 A firewall with a DMZ
Figure 15.4 Protocol switching with and without a dead zone
Figure 15.5 A hacker denied by a dynamic state list
Figure 15.6 A packet going to a proxy
Figure 15.7 Virtual wire
Figure 15.8 Internet Options Security tab
Figure 15.9 Adding a trusted site
Figure 15.10 Custom security settings
Figure 15.11 An MD-IDS system in action
Figure 15.12 An IDS connected to the network
Figure 15.13 Shutting down port 80 for 60 seconds to stop an attack
Figure 15.14 Deceiving an attacker with a honeypot
Figure 15.15 VPN concentrator in a network
Figure 15.16 A three-layer security model
Figure 15.17 Mantrap
Figure 15.18 Network perimeter defense
Figure 15.19 Network divided into security zones
Figure 15.20 Using routers to divide a network into security zones
Figure 15.21 RAID-0
Figure 15.22 RAID-1
Figure 15.23 RAID-5
Figure 15.24 Nessus

Chapter 16

Figure 16.1 A typical wide area network
Figure 16.2 WAN connection types
Figure 16.3 An example of a satellite point-to-multipoint
Figure 16.4 Broadband access using cable or DSL
Figure 16.5 Cable network
Figure 16.6 Before Frame Relay
Figure 16.7 After Frame Relay
Figure 16.8 Point-to-Point Protocol stack
Figure 16.9 PPP session establishment
Figure 16.10 DMVPN
Figure 16.11 SIP trunk
Figure 16.12 WAN troubleshooting spots

Chapter 17

Figure 17.1 DHCP capture
Figure 17.2 Throughput
Figure 17.3 LogMeIn
Figure 17.4 Elevating your command prompt
Figure 17.5 TCP flags
Figure 17.6 route print output
Figure 17.7 Sample output of the nbtstat –a command
Figure 17.8 Sample output of the nbtstat –c command
Figure 17.9 Sample output of the nbtstat –n command
Figure 17.10 Sample output of the nbtstat –r command
Figure 17.11 Sample output of the nbtstat –S command
Figure 17.12 Sample output of the nbtstat –s command
Figure 17.13 Sample output of the netstat –a command
Figure 17.14 The Telnet utility

Chapter 18

Figure 18.1 Output from a packet sniffer
Figure 18.2 A Cisco ASA
Figure 18.3 IDS/IPS placement in an internetwork
Figure 18.4 Nmap in action
Figure 18.5 Angry IP port scanning
Figure 18.6 Wireless analyzer
Figure 18.7 Wireless survey tool
Figure 18.8 SNMP GET and TRAP messages
Figure 18.9 Syslog server and client
Figure 18.10 Speakeasy Speed Test
Figure 18.11 Looking Glass site output
Figure 18.12 Windows Event Viewer system log
Figure 18.13 Mac Activity Monitor
Figure 18.14 Wireless channel utilization
Figure 18.15 An inexpensive cable tester
Figure 18.16 Ethernet loopback plug
Figure 18.17 Fiber loopback plug
Figure 18.18 Sample OTDR output
Figure 18.19 A multimeter
Figure 18.20 Spectrum analyzer output
Figure 18.21 A toner probe
Figure 18.22 A butt set
Figure 18.23 An example of a punch-down tool
Figure 18.24 Using a punch-down tool on a small keystone connector
Figure 18.25 A combination cable stripper, crimper, and snippers

Chapter 19

Figure 19.1 Cannot connect
Figure 19.2 Host could not be found.
Figure 19.3 Successful ping
Figure 19.4 Rogue DHCP
Figure 19.5 Certificate error
Figure 19.6 Netstat -a
Figure 19.7 Service dependencies
Figure 19.8 ipconfig/all
Figure 19.9 Manage Network Connections
Figure 19.10 Interface properties
Figure 19.11 IP properties
Figure 19.12 Obtain DNS Server Address Automatically
Figure 19.13 ipconfig /all

Chapter 20

Figure 20.1 RJ-45 connector
Figure 20.2 Two ends of a crossover cable
Figure 20.3 Rack-mounted switches
Figure 20.4 Simple network physical diagram
Figure 20.5 Network diagram with firewalls from SmartDraw
Figure 20.6 Hardware-rack diagram from SmartDraw
Figure 20.7 Logical network diagram
Figure 20.8 Grounding methods
Figure 20.9 Hot and cold aisles
Figure 20.10 Backup types
Figure 20.11 Guests and hosts
Figure 20.12 Hypervisors
Figure 20.13 Virtualization
Figure 20.14 Classic SAN vs. iSCSI
Figure 20.15 NAS and SAN
Figure 20.16 MDF and IDFs
Figure 20.17 Cable trays
Figure 20.18 Two-post racks
Figure 20.19 Four-post rack
Figure 20.20 Freestanding rack

Senior Acquisitions Editor: Kenyon Brown
Development Editor: Kim Wimpsett
Technical Editors: Wynn D. Smith and Jon Buhagiar
Senior Production Editor: Christine O’Connor
Copy Editor: Judy Flynn
Editorial Manager: Mary Beth Wakefield
Production Manager: Kathleen Wisor
Executive Editor: Jim Minatel
Book Designers: Judy Fung and Bill Gibson
Proofreader: Amy Schneider
Indexer: Ted Laux
Project Coordinator, Cover: Brent Savage
Cover Designer: Wiley
Cover Image: Getty Images Inc./Jeremy Woodhouse

Published simultaneously in Canada

ISBN: 978-1-119-43225-8
ISBN: 978-1-119-43222-7 (ebk.)
ISBN: 978-1-119-43226-5 (ebk.)

Manufactured in the United States of America

No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600. Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, (201) 748-6011, fax (201) 748-6008, or online at http://www.wiley.com/go/permissions.

Limit of Liability/Disclaimer of Warranty: The publisher and the author make no representations or warranties with respect to the accuracy or completeness of the contents of this work and specifically disclaim all warranties, including without limitation warranties of fitness for a particular purpose. No warranty may be created or extended by sales or promotional materials. The advice and strategies contained herein may not be suitable for every situation. This work is sold with the understanding that the publisher is not engaged in rendering legal, accounting, or other professional services. If professional assistance is required, the services of a competent professional person should be sought. Neither the publisher nor the author shall be liable for damages arising herefrom. The fact that an organization or Web site is referred to in this work as a citation and/or a potential source of further information does not mean that the author or the publisher endorses the information the organization or Web site may provide or recommendations it may make. Further, readers should be aware that Internet Web sites listed in this work may have changed or disappeared between when this work was written and when it is read.

For general information on our other products and services or to obtain technical support, please contact our Customer Care Department within the U.S. at (877) 762-2974, outside the U.S. at (317) 572-3993 or fax (317) 572-4002.

Wiley publishes in a variety of print and electronic formats and by print-on-demand. Some material included with standard print versions of this book may not be included in e-books or in print-on-demand. If this book refers to media such as a CD or DVD that is not included in the version you purchased, you may download this material at http://booksupport.wiley.com. For more information about Wiley products, visit www.wiley.com.

Library of Congress Control Number: 2018937836

TRADEMARKS: Wiley, the Wiley logo, and the Sybex logo are trademarks or registered trademarks of John Wiley & Sons, Inc. and/or its affiliates, in the United States and other countries, and may not be used without written permission. CompTIA and Network+ are trademarks or registered trademarks of CompTIA Properties, LLC. All other trademarks are the property of their respective owners. John Wiley & Sons, Inc. is not associated with any product or vendor mentioned in this book.

Acknowledgments

Kim Wimpsett was the development editor of this Sybex CompTIA series. Thank you, Kim, for your patience and kindness, and working so hard on this book with me.

Kenyon Brown was acquisitions editor for this book. Thank you, Kenyon, for making this book a reality!

In addition, Christine O’Connor was an excellent production editor, and she worked really hard to get the book done as quickly as possible, without missing the small mistakes that are so easy to overlook. I am always very pleased when I hear that she will be working with me on a new project.

Wynn D. Smith reviewed each topic in this guide, scrutinizing the material until we both agreed it was verifiably solid. Thank you, Wynn!

Troy McMillan literally hashed and rehashed each topic in this guide with me at all hours of the day and night. Thank you, Troy, yet again!

CompTIA^®
Network+^®

Study Guide
Exam N10-007
Fourth Edition

Acknowledgments

About the Author

Study Guide Exam N10-007Fourth Edition

Study Guide
Exam N10-007
Fourth Edition