• Computer Network Fundamentals
• The OSI Reference Model
• Network Components
• Ethernet Technology
• IPv4 and IPv6 Addresses
• Routing IP Packets
• Wide-Area Networks
• Wireless LANs
• Network Optimization
• Command-Line Tools
• Network Management
• Network Security
• Network Troubleshooting
• Final Preparation
• Exam Updates
• Exam Essentials
• Foundation Topics
• Defining a Network
• The Purpose of Networks
• Overview of Network Components
• Networks Defined by Geography
• LAN
• WAN
• Other Categories of Networks
• CAN
• MAN
• PAN
• Networks Defined by Topology
• Physical Versus Logical Topology
• Bus Topology
• Ring Topology
• Star Topology
• Hub-and-Spoke Topology
• Full-Mesh Topology
• Partial-Mesh Topology
• Networks Defined by Resource Location
• Client/Server Networks
• Peer-to-Peer Networks
• Real-World Case Study
• Exam Preparation Tasks
The CompTIA Network+ (N10-006) certification exam will test to determine that
the successful candidate has the knowledge and skills required to configure, manage
and troubleshoot a network that uses Internet Protocol (IP).
In a digital world, digital literacy is an essential survival skill. Certification proves
that you have the knowledge and skill to solve business problems in nearly any business
environment. Certifications are highly valued credentials that qualify you for
jobs, increased compensation, and promotion.
■ The CompTIA Network+ credential: Proves knowledge of networking features
and functions and is the leading vendor-neutral certification for networking
professionals.
■ Career pathway: CompTIA Network+ is the first step in starting a networking
career. Hundreds of thousands of individuals worldwide are CompTIA Network+ certified.
■ Mandated/recommended by organizations worldwide: Such as Cisco, HP,
Ricoh, the U.S. State Department, and U.S. government contractors such as
EDS, General Dynamics, and Northrop Grumman.
CompTIA offers a number of credentials that form a foundation for your career in
technology and allow you to pursue specific areas of concentration. Depending on
the path you choose to take, CompTIA certifications help you build upon your skills
and knowledge, supporting learning throughout your entire career.
Why CompTIA?
■ Global recognition: CompTIA is recognized globally as the leading IT nonprofit
trade association and has enormous credibility. Plus, CompTIA’s certifications
are vendor-neutral and offer proof of foundational knowledge that
translates across technologies.
■ Valued by hiring managers: Hiring managers value CompTIA certification
because it is vendor- and technology-independent validation of your technical
skills.
■ Recommended or required by government and businesses: Many government
organizations and corporations either recommend or require technical
staff to be CompTIA certified.
The goal of this book is to assist you in learning and understanding the technologies
covered in the Network+ N10-006 blueprint from CompTIA. This also allows you
to demonstrate that knowledge by passing the N10-006 version of the CompTIA
Network+ exam.
To aid you in mastering and understanding the Network+ certification objectives,
this book uses the following methods:
■ Opening topics list: This defines the topics that are covered in the chapter.
■ Foundation topics: At the heart of a chapter, this section explains the topics
from a hands-on and a theory-based standpoint. This includes in-depth descriptions,
tables, and figures that build your knowledge so that you can pass
the N10-006 exam. The chapters are each broken into multiple sections.
■ Key topics: This indicates important figures, tables, and lists of information
that you need to know for the exam. They are sprinkled throughout each
chapter and are summarized in table format at the end of each chapter.
■ Memory tables: You can find these on the DVD within Appendixes D and E.
Use them to help memorize important information.
■ Key terms: Key terms without definitions are listed at the end of each chapter.
Write down the definition of each term, and check your work against the
complete key terms in the Glossary. On the DVD, you will find a flash card
application with all the glossary terms separated by chapter, so feel free to use
that to study key terms as well.
■ Exercises: This book comes with 40 performance-based practice exercises that
are designed to help you prepare for the hands-on portion of the Network+
exam. These exercises are available on the DVD. Make sure you do the exercises
as you complete each chapter and again when you have completed the
book and are doing your final preparation.
■ Hands-on Labs: These include matching, drag and drop, and simulations.
These hands-on exercises are an important part of this book. In addition to
reading this book, you should go through all the exercises included with the
book. These interactive hands-on exercises provide examples, additional information,
and insight about a vendor’s implementation of the technologies. To
perform the labs, simply install the CompTIA Network+ N10-006 Hands-on
Lab Simulator software from the DVD.
■ Practice Exams: This book comes complete with several full length practice
exams available to you in the Pearson IT Certification Practice Test software
on the DVD. Be sure to run through the questions in Exam Bank 1 as you
complete each chapter in study mode. When you have completed the book,
take a full practice test using Exam Banks 2-4 questions in practice exam mode
to test your exam readiness.
■ Exam Essentials: This book includes an Exam Essentials appendix that summaries
the key points from every chapter. This review tool is available in both
print and an interactive PDF on the DVD. Review these essential exam facts
after each chapter and again when you have completed the book. This makes
a great review summary that you can mark up as you review and master each
concept.
The CompTIA Network+ certification is a popular certification for those entering
the computer networking field. Although many vendor-specific networking certifications
are popular in the industry, the CompTIA Network+ certification is unique
in that it is vendor neutral. The CompTIA Network+ certification often acts as a
stepping-stone to more specialized and vendor-specific certifications, such as those
offered by Cisco Systems.
In CompTIA Network+, the topics are mostly generic in that they can apply to
networking equipment regardless of vendor. Although the CompTIA Network+ is
vendor neutral, network software and systems are implemented by multiple independent
vendors. In that light, several of the exercises, examples, and simulations in
this book include using a vendor’s configuration and technology such as Microsoft
Windows operating systems or Cisco Systems routers and switches. More detailed
training for a specific vendor’s software and hardware can be found in books and
training specific to that vendor.
• Foundation Topics
• The Purpose of Reference Models
• The OSI Model
• Layer 1: The Physical Layer
• Layer 2: The Data Link Layer
• Media Access Control
• Logical Link Control
• Layer 3: The Network Layer
• Layer 4: The Transport Layer
• Layer 5: The Session Layer
• Layer 6: The Presentation Layer
• Layer 7: The Application Layer
• The TCP/IP Stack
• Layers of the TCP/IP Stack
• Common Application Protocols in the TCP/IP Stack
• Real-World Case Study
• Exam Preparation Tasks
• Foundation Topics
• Media
• Coaxial Cable
• Twisted-Pair Cable
• Shielded Twisted Pair
• Unshielded Twisted Pair
• Plenum Versus Nonplenum Cable
• Fiber-Optic Cable
• Multimode Fiber
• Single-Mode Fiber
• Fiber Connector Polishing Styles
• Media Converters
• Cable Distribution
• Wireless Technologies
• Network Infrastructure Devices
• Hubs
• Bridges
• Switches
• Multilayer Switches
• Routers
• Infrastructure Device Summary
• Specialized Network Devices
• VPN Concentrators
• Firewalls
• DNS Servers
• DHCP Servers
• Proxy Servers
• Content Engines
• Content Switches
• Virtual Network Devices
• Virtual Servers
• Virtual Routers and Firewalls
• Virtual Switches
• Virtual Desktops
• Other Virtualization Solutions
• Cloud Computing
• Software-Defined Networking
• Voice over IP Protocols and Components
• Real-World Case Study
• Exam Preparation Tasks
• Foundation Topics
• Principles of Ethernet
• Ethernet Origins
• Carrier Sense Multiple Access Collision Detect
• Distance and Speed Limitations
• Ethernet Switch Features
• Virtual LANs
• Switch Configuration for an Access Port
• Trunks
• Switch Configuration for a Trunk Port
• Spanning Tree Protocol
• Corruption of a Switch’s MAC Address Table
• Broadcast Storms
• STP Operation
• Link Aggregation
• LACP Configuration
• Power over Ethernet
• Port Monitoring
• Port Mirroring Configuration
• User Authentication
• Management Access and Authentication
• First-Hop Redundancy
• Other Switch Features
• Real-World Case Study
• Exam Preparation Tasks
• IPv4 and IPv6 Addresses
• Foundation Topics
• Binary Numbering
• Principles of Binary Numbering
• Converting a Binary Number to a Decimal Number
• Converting a Decimal Number to a Binary Number
• Binary Numbering Practice
• Binary Conversion Exercise 1
• Binary Conversion Exercise 1: Solution
• Binary Conversion Exercise 2
• Binary Conversion Exercise 2: Solution
• Binary Conversion Exercise 3
• Binary Conversion Exercise 3: Solution
• Binary Conversion Exercise 4
• Binary Conversion Exercise 4: Solution
• IPv4 Addressing
• IPv4 Address Structure
• Classes of Addresses
• Types of Addresses
• Unicast
• Broadcast
• Multicast
• Assigning IPv4 Addresses
• IP Addressing Components
• Static Configuration
• Dynamic Configuration
• BOOTP
• DHCP
• Automatic Private IP Addressing
• Subnetting
• Purpose of Subnetting
• Subnet Mask Notation
• Subnet Notation: Practice Exercise 1
• Subnet Notation: Practice Exercise 1 Solution
• Subnet Notation: Practice Exercise 2
• Subnet Notation: Practice Exercise 2 Solution
• Extending a Classful Mask
• Borrowed Bits
• Calculating the Number of Created Subnets
• Calculating the Number of Available Hosts
• Basic Subnetting Practice: Exercise 1
• Basic Subnetting Practice: Exercise 1 Solution
• Basic Subnetting Practice: Exercise 2
• Basic Subnetting Practice: Exercise 2 Solution
• Calculating New IP Address Ranges
• Advanced Subnetting Practice: Exercise 1
• Advanced Subnetting Practice: Exercise 1 Solution
• Advanced Subnetting Practice: Exercise 2
• Advanced Subnetting Practice: Exercise 2 Solution
• Additional Practice
• Classless Interdomain Routing
• IP Version 6
• Need for IPv6
• IPv6 Address Structure
• IPv6 Address Types
• IPv6 Data Flows
• Unicast
• Multicast
• Anycast
• Real-World Case Study
• Exam Preparation Tasks
• Foundation Topics
• Basic Routing Processes
• Sources of Routing Information
• Directly Connected Routes
• Static Routes
• Dynamic Routing Protocols
• Routing Protocol Characteristics
• Believability of a Route
• Metrics
• Interior Versus Exterior Gateway Protocols
• Route Advertisement Method
• Distance Vector
• Link State
• Routing Protocol Examples
• Address Translation
• NAT
• PAT
• Multicast Routing
• IGMP
• PIM
• PIM-DM
• PIM-SM
• Real-World Case Study
• Exam Preparation Tasks
• Foundation Topics
• WAN Properties
• WAN Connection Types
• WAN Data Rates
• WAN Media Types
• Physical Media
• Wireless Media
• WAN Technologies
• Dedicated Leased Line
• T1
• E1
• T3
• E3
• CSU/DSU
• Metro Ethernet
• Point-to-Point Protocol
• Point-to-Point Protocol over Ethernet
• Microsoft RRAS
• Digital Subscriber Line
• Cable Modem
• Synchronous Optical Network
• Satellite
• Plain Old Telephone Service
• Integrated Services Digital Network
• Frame Relay
• Asynchronous Transfer Mode
• Multiprotocol Label Switching
• Overlay Networks
• Real-World Case Study
• Exam Preparation Tasks
• Tools for Final Preparation
• Pearson Cert Practice Test Engine and Questions on the DVD
• Install the Software from the DVD
• Activate and Download the Practice Exam
• Activating Other Exams
• Premium Edition
• Video Training on DVD
• Memory Tables
• Simulations and Performance-Based Exercises
• End-of-Chapter Review Tools
• Suggested Plan for Final Review and Study
• Strategies for Taking the Exam
• Foundation Topics
• Introducing Wireless LANs
• WLAN Concepts and Components
• Wireless Routers
• Wireless Access Point
• Antennas
• Frequencies and Channels
• CSMA/CA
• Transmission Methods
• WLAN Standards
• 802.11a
• 802.11b
• 802.11g
• 802.11n
• 802.11ac
• 802.11x Standard Summary
• Deploying Wireless LANs
• Types of WLANs
• IBSS
• BSS
• ESS
• Mesh Topology
• Sources of Interference
• Wireless AP Placement
• Securing Wireless LANs
• Security Issues
• Approaches to WLAN Security
• Security Standards
• WEP
• WPA
• WPA2
• Additional Wireless Options
• Real-World Case Study
• Exam Preparation Tasks
• Foundation Topics
• High Availability
• High-Availability Measurement
• Fault-Tolerant Network Design
• Hardware Redundancy
• Layer 3 Redundancy
• Design Considerations for High-Availability Networks
• High-Availability Best Practices
• Content Caching
• Load Balancing
• QoS Technologies
• Introduction to QoS
• QoS Configuration Steps
• QoS Components
• QoS Mechanisms
• Classification
• Marking
• Congestion Management
• Congestion Avoidance
• Policing and Shaping
• Link Efficiency
• Case Study: SOHO Network Design
• Case Study Scenario
• Suggested Solution
• IP Addressing
• Layer 1 Media
• Layer 2 Devices
• Layer 3 Devices
• Wireless Design
• Environmental Factors
• Cost Savings Versus Performance
• Topology
• Real-World Case Study
• Exam Preparation Tasks
• Foundation Topics
• Windows Commands
• arp
• ipconfig
• nbtstat
• netstat
• nslookup
• ping
• ping with IPv6
• route
• tracert
• tracert with IPv6
• PathPing
• UNIX Commands
• arp
• dig and nslookup
• host
• ifconfig
• traceroute
• traceroute for IPv6
• netstat
• ping
• Real-World Case Study
• Exam Preparation Tasks
• Foundation Topics
• Maintenance Tools
• Bit-Error Rate Tester
• Butt Set
• Cable Certifier
• Cable Tester
• Connectivity Software
• Crimper
• Electrostatic Discharge Wrist Strap
• Environmental Monitor
• Loopback Plug
• Multimeter
• Protocol Analyzer
• WiFi Analyzer
• Looking-Glass Sites
• Speed Test Sites
• Punch-Down Tool
• Throughput Tester
• Time Domain Reflectometer/Optical Time Domain Reflectometer
• Toner Probe
• Configuration Management
• Monitoring Resources and Reports
• SNMP
• Syslog
• Logs
• Application Logs
• Security Logs
• System Logs
• Real-World Case Study
• Exam Preparation Tasks
• Foundation Topics
• Security Fundamentals
• Network Security Goals
• Confidentiality
• Symmetric Encryption
• Asymmetric Encryption
• Integrity
• Availability
• Categories of Network Attacks
• Confidentiality Attacks
• Integrity Attacks
• Availability Attacks
• Denial of Service
• Distributed Denial of Service
• TCP SYN Flood
• Buffer Overflow
• ICMP Attacks
• Electrical Disturbances
• Attacks on a System’s Physical Environment
• Physical Controls
• Defending Against Attacks
• User Training
• Patching
• Security Policies
• Governing Policy
• Technical Policies
• End-User Policies
• More Detailed Documents
• Incident Response
• Vulnerability Scanners
• Nessus
• Nmap
• Honey Pots and Honey Nets
• Access Control Lists
• Remote-Access Security
• Firewalls
• Firewall Types
• Firewall Inspection Types
• Packet-Filtering Firewall
• Stateful Firewall
• Firewall Zones
• Unified Threat Management Firewalls
• Virtual Private Networks
• Overview of IPsec with IKEv1
• IKE Modes and Phases
• Authentication Header and Encapsulating Security Payload
• The Five Steps in Setting Up and Tearing Down an IPsec Site-to-Site
• VPN Using IKEv1
• Other VPN Technologies
• Intrusion Detection and Prevention
• IDS Versus IPS
• IDS and IPS Device Categories
• Detection Methods
• Signature-Based Detection
• Policy-Based Detection
• Anomaly-Based Detection
• Deploying Network-Based and Host-Based Solutions
• Real-World Case Study
• Exam Preparation Tasks
• Foundation Topics
• Troubleshooting Basics
• Troubleshooting Fundamentals
• Structured Troubleshooting Methodology
• Physical Layer Troubleshooting
• Physical Layer Troubleshooting: Scenario
• Physical Layer Troubleshooting: Solution
• Data Link Layer Troubleshooting
• Data Link Layer Troubleshooting: Scenario
• Data Link Layer Troubleshooting: Solution
• Network Layer Troubleshooting
• Layer 3 Data Structures
• Common Layer 3 Troubleshooting Issues
• Network Layer Troubleshooting: Scenario
• Network Layer Troubleshooting: Solution
• Wireless Troubleshooting
• Wireless Network Troubleshooting: Scenario
• Wireless Network Troubleshooting: Solution
• Specialized Networks
• Real-World Case Study
• Exam Preparation Tasks
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