CompTIA Network+ Study Guide
Exam N10-009
6th Edition
Published on 17. April 2024
1024 pages
978-1-394-23562-9 (ISBN)
Description
Prepare for the Network+ certification and a new career in network installation and administration
In the newly revised Sixth Edition of CompTIA Network+ Study Guide: Exam N10-009, bestselling authors and network experts Todd Lammle and Jon Buhagiar deliver thorough and accurate coverage of how to install, configure, and troubleshoot today's networking hardware peripherals and protocols.
This book shows you how to succeed on the in-demand CompTIA Network+ certification exam, impress interviewers in the networking industry, and excel in your first role as a network administrator, support technician, or related position.
The accomplished authors draw on their combined 30+ years of networking experience to walk you through the ins and outs of the five functional domains covered by the Network+ Exam: N10-009: Networking concepts, implementation, operations, security, and troubleshooting. You'll also get:
* Comprehensive, domain-specific coverage of the updated Network+ Exam: N10-009 objectives
* Preparation for the leading network certification used by over 350,000 networking professionals
* Access to a superior set of online study tools, including hundreds of practice questions, flashcards, and a glossary of key terms
Perfect for anyone preparing for the latest version of the CompTIA Network+ Exam: N10-009, the Sixth Edition of CompTIA Network+ Study Guide: Exam N10-009 is a must-have resource for network admins seeking to enhance their skillset with foundational skills endorsed by industry pros and thought leaders from around the world.
In the newly revised Sixth Edition of CompTIA Network+ Study Guide: Exam N10-009, bestselling authors and network experts Todd Lammle and Jon Buhagiar deliver thorough and accurate coverage of how to install, configure, and troubleshoot today's networking hardware peripherals and protocols.
This book shows you how to succeed on the in-demand CompTIA Network+ certification exam, impress interviewers in the networking industry, and excel in your first role as a network administrator, support technician, or related position.
The accomplished authors draw on their combined 30+ years of networking experience to walk you through the ins and outs of the five functional domains covered by the Network+ Exam: N10-009: Networking concepts, implementation, operations, security, and troubleshooting. You'll also get:
* Comprehensive, domain-specific coverage of the updated Network+ Exam: N10-009 objectives
* Preparation for the leading network certification used by over 350,000 networking professionals
* Access to a superior set of online study tools, including hundreds of practice questions, flashcards, and a glossary of key terms
Perfect for anyone preparing for the latest version of the CompTIA Network+ Exam: N10-009, the Sixth Edition of CompTIA Network+ Study Guide: Exam N10-009 is a must-have resource for network admins seeking to enhance their skillset with foundational skills endorsed by industry pros and thought leaders from around the world.
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04/2024
6th Edition
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Content
- Cover
- Title Page
- Copyright Page
- Acknowledgments
- About the Authors
- About the Technical Editor
- Contents at a Glance
- Contents
- Table of Exercises
- Introduction
- What Is the Network+ Certification?
- Why Become Network+ Certified?
- How to Become Network+ Certified
- Tips for Taking the Network+ Exam
- Who Should Read This Book?
- What Does This Book Cover?
- What's Included in the Book
- Interactive Online Learning Environment and Test Bank
- How to Use This Book
- N10-009 Exam Objectives
- Objective Map
- Assessment Test
- Answers to Assessment Test
- Chapter 1 Introduction to Networks
- First Things First: What's a Network?
- The Local Area Network
- Common Network Components
- Network Types
- Network Architecture: Peer-to-Peer or Client-Server?
- Physical Network Topologies
- Bus Topology
- Star Topology
- Ring Topology
- Mesh Topology
- Point-to-Point Topology
- Point-to-Multipoint Topology
- Hybrid Topology
- Topology Selection, Backbones, and Segments
- They're Just Cables, Right?
- Selecting the Right Topology
- The Network Backbone
- Network Segments
- Service-Related Entry Points
- Service Provider Links
- Virtual Networking
- Three-Tiered Model
- Spine and Leaf
- Traffic Flow
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 2 The Open Systems Interconnection (OSI) Reference Model
- Internetworking Models
- The Layered Approach
- Advantages of Reference Models
- The Application Layer
- The Presentation Layer
- The Session Layer
- The Transport Layer
- The Network Layer
- The Data Link Layer
- The Physical Layer
- Introduction to Encapsulation
- Modulation Techniques
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 3 Networking Connectors and Wiring Standards
- Physical Media
- Coaxial Cable
- Twisted-Pair Cable
- Twinaxial Cable
- Fiber-Optic Cable
- Transceivers
- Media Converters
- Serial Cables
- Cable Properties
- Transmission Speeds
- Distance
- Duplex
- Noise Immunity (Security, EMI)
- Frequency
- Wiring Standards
- T568A vs. T568B
- Straight-Through Cable
- Crossover Cable
- Rolled/Rollover Cable
- T1 Crossover Cable
- Installing Wiring Distributions
- MDF/IDF
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 4 The Current Ethernet Specifications
- Network Basics
- Ethernet Basics
- Collision Domain
- Broadcast Domain
- CSMA/CD
- Broadband/Baseband
- Bit Rates vs. Baud Rate
- Wavelength
- Half- and Full-Duplex Ethernet
- Ethernet at the Data Link Layer
- Binary to Decimal and Hexadecimal Conversion
- Ethernet Addressing
- Ethernet Frames
- Ethernet at the Physical Layer
- Ethernet over Other Standards (IEEE 1905.1-2013)
- Ethernet over Power Line
- Ethernet over HDMI
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 5 Networking Devices
- Common Network Connectivity Devices
- Network Interface Card
- Hub
- Bridge
- Switch
- Router
- Firewall
- IDS/IPS
- HIDS
- Access Point
- Wireless Range Extender
- Wireless LAN Controller
- Load Balancer
- Contention Methods
- Dynamic Host Configuration Protocol Server
- IPAM
- Other Specialized Devices
- Multilayer Switch
- Domain Name System Server
- Network Time Protocols
- Proxy Server
- Encryption and Content Filtering
- Analog Modem
- Packet Shaper
- VPN Concentrator/Headend
- Media Converter
- VoIP PBX
- VoIP Endpoint
- NGFW/Layer 7 Firewall
- VoIP Gateway
- Cable Modem
- DSL Modem
- Networked Devices
- VoIP Phones
- Printers
- Physical Access Control Devices
- Cameras
- Heating Ventilation, and Air Conditioning (HVAC) Sensors
- Internet of Things (IoT)
- Industrial Control Systems
- Planning and Implementing a Basic SOHO Network Using Network Segmentation
- Determining Requirements
- Switches and Bridges at the Data Link Layer
- Hubs at the Physical Layer
- Environmental Considerations
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 6 Introduction to the Internet Protocol
- Introducing TCP/IP
- A Brief History of TCP/IP
- The DoD Model and TCP/IP
- The Process/Application Layer Protocols
- The Host-to-Host Layer Protocols
- The Internet Layer Protocols
- Data Encapsulation
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 7 IP Addressing
- IP Terminology
- The Hierarchical IP Addressing Scheme
- Network Addressing
- Private IP Addresses (RFC 1918)
- IPv4 Address Types
- Layer 2 Broadcasts
- Layer 3 Broadcasts
- Unicast Address
- Multicast Address (Class D)
- Internet Protocol Version 6 (IPv6)
- Why Do We Need IPv6?
- The Benefits of and Uses for IPv6
- IPv6 Addressing and Expressions
- Shortened Expression
- Address Types
- Special Addresses
- Stateless Address Autoconfiguration (SLAAC)
- DHCPv6 (Stateful)
- Migrating to IPv6
- Summary
- Exam Essentials
- Written Labs
- Written Lab 7.1
- Written Lab 7.2
- Review Questions
- Chapter 8 IP Subnetting, Troubleshooting IP, and Introduction to NAT
- Subnetting Basics
- How to Create Subnets
- Subnet Masks
- Classless Inter-Domain Routing (CIDR)
- Subnetting Class C Addresses
- Subnetting Class B Addresses
- Troubleshooting IP Addressing
- Determining IP Address Problems
- Introduction to Network Address Translation (NAT)
- Types of Network Address Translation
- NAT Names
- How NAT Works
- 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
- Administrative Distances
- Classes of Routing Protocols
- Distance-Vector Routing Protocols
- Routing Information Protocol (RIP)
- RIP Version 2 (RIPv2)
- VLSMs and Discontiguous Networks
- EIGRP
- Border Gateway Protocol (BGP)
- Link-State Routing Protocols
- Open Shortest Path First (OSPF)
- Intermediate System-to-Intermediate System (IS-IS)
- High Available Routes
- Advanced IPv6 Concepts
- Router Advertisement
- Neighbor Discovery Protocol
- Tunneling
- Dual Stack
- IPv6 Routing Protocols
- RIPng
- EIGRPv6
- OSPFv3
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 11 Switching and Virtual LANs
- Networking Before Layer 2 Switching
- Switching Services
- Limitations of Layer 2 Switching
- Bridging vs. LAN Switching
- Three Switch Functions at Layer 2
- Distributed Switching
- Spanning Tree Protocol
- Spanning Tree Port States
- STP Convergence
- Rapid Spanning Tree Protocol 802.1w
- Virtual LANs
- VLAN Basics
- Quality of Service
- VLAN Memberships
- Static VLANs
- Dynamic VLANs
- Identifying VLANs
- VLAN Identification Methods
- Routing Between VLANs
- VLAN Trunking Protocol
- VTP Modes of Operation
- Do We Really Need to Put an IP Address on a Switch?
- Switch Port Protection
- Port Bonding
- Device Hardening
- Advanced Features of Switches
- Power over Ethernet (802.3af, 802.3at)
- Port Mirroring/Spanning (SPAN/RSPAN)
- Jumbo Frames
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 12 Wireless Networking
- Introduction to Wireless Technology
- Cellular Technologies
- The 802.11 Standards (Regulatory Impacts)
- 2.4 GHz (802.11b)
- 2.4 GHz (802.11g)
- 5 GHz (802.11a)
- 5 GHz (802.11h)
- 2.4 GHz/5 GHz (802.11n)
- 5 GHz (802.11ac)
- Wi-Fi 6 (802.11ax)
- Comparing 802.11 Standards
- Range and Speed Comparisons
- Wireless Network Components
- Wireless Access Points
- Wireless Network Interface Card
- Wireless Antennas
- Installing a Wireless Network
- Ad Hoc Mode: Independent Basic Service Set
- Infrastructure Mode: Basic Service Set identifier (BSSID)
- Wireless Controllers
- Guest Networks
- Captive Portals
- Mobile Hot Spots
- Signal Degradation
- Technologies That Facilitate the Internet of Things (IoT)
- Installing and Configuring WLAN Hardware
- Site Survey
- Exercise 12.2
- Providing Capacity
- Multiple Floors
- Location-Based WLAN
- Site Survey Tools
- Wireless Security
- Wireless Threats
- Open Access
- Service Set Identifiers, Wired Equivalent Privacy, and Media Access Control Address Authentication
- Geofencing
- Remote Authentication Dial-In User Service (802.1X)
- Temporal Key Integrity Protocol
- Wi-Fi Protected Access or WPA2 Pre-Shared Key
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 13 Remote Network Access
- Site-to-Site VPN
- Client-to-Site VPN
- Clientless VPN
- Split Tunnel vs. Full Tunnel
- Remote Desktop Connection
- Remote Desktop Protocol
- RDP Gateway
- Virtual Network Computing
- Virtual Desktop
- Connection Methods
- Secure Shell
- Graphical User Interface
- Application Programming Interface
- Console/Rolled Serial Cable
- Jump Box/Host
- Where Should You Implement a Jump Box/Host?
- In-Band vs. Out-of-Band Management
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 14 Using Statistics and Sensors to Ensure Network Availability
- Performance Monitoring/Metrics/Sensors
- Device/Chassis
- Network Metrics
- Additional Monitoring Solutions
- Baseline Metrics
- Traffic Analysis
- Performance Monitoring
- Availability Monitoring
- Configuration Monitoring
- SNMP
- Agent
- NMS
- Commands
- Community Name
- Versions
- OIDs and the MIB
- Authentication
- Application Programming Interface Integration
- Protocol Analyzer/Packet Capture
- Port Mirroring
- Flow Data
- Log Aggregation
- Network Device Logs
- Log Reviews
- Syslog
- SIEM
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 15 Organizational Documents and Policies
- Plans and Procedures
- Change Management
- Incident Response Plan
- Disaster Recovery Plan
- Business Continuity Plan
- Inventory Management
- System Life Cycle
- Standard Operating Procedures
- Hardening and Security Policies
- Acceptable Use Policy
- Password Policy
- Bring Your Own Device Policy
- Remote Access Policy
- Onboarding and Offboarding Policy
- Patch Management
- Driver/Firmware Updates
- Security Policy
- Data Loss Prevention
- Common Documentation
- Physical Network Diagram
- Logical Network Diagram
- Wiring Diagram
- Layered Network Diagram
- Site Survey Report
- Audit and Assessment Report
- Baseline Configurations
- IP Address Management
- Common Agreements
- Nondisclosure Agreement
- Service-Level Agreement
- Memorandum of Understanding
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 16 High Availability and Disaster Recovery
- Load Balancing
- Multipathing
- Network Interface Card (NIC) Teaming
- Redundant Hardware/Clusters
- Switches
- Routers
- Firewalls
- Servers
- Clusters
- Mean Time to Repair
- Mean Time Between Failure
- Facilities and Infrastructure Support
- Uninterruptible Power Supply
- Power Distribution Units
- Generator
- HVAC
- Fire Suppression
- Redundancy and High Availability Concepts
- Disaster Recovery Sites
- Active/Active vs. Active/Passive
- Backups
- Network Device Backup/Restore
- Recovery
- Testing
- Tabletop Exercises
- Validation Tests
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 17 Data Center Architecture and Cloud Concepts
- Cloud Computing
- Characteristics of a Cloud
- Cloud Delivery Models
- Types of Services
- Network Function Virtualization
- Virtual Private Cloud
- Connectivity Options
- Cloud Gateways
- Multitenancy
- Elasticity
- Scalability
- Network Security Groups
- Network Security Lists
- Security Implications/Considerations
- Relationship Between Local and Cloud Resources
- Infrastructure as Code
- Automation/Orchestration
- Source Control
- Software-Defined Networking
- Benefits of Software-Defined Networking
- Components of Software-Defined Networking
- Virtual Extensible Local Area Network
- Layer 2 Encapsulation Limitations Addressed by VXLAN
- Data Center Interconnect
- Zero Trust Architecture
- Policy-Based Authentication
- Authorization
- Least Privilege Access
- Secure Access Secure Edge/Security Service Edge
- SASE
- SSE
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 18 Network Troubleshooting Methodology
- Narrowing Down the Problem
- Did You Check the Super Simple Stuff?
- Is Hardware or Software Causing the Problem?
- Is It a Workstation or a Server Problem?
- Which Segments of the Network Are Affected?
- Is It Bad Cabling?
- Cable Considerations
- Cable Application
- Troubleshooting Steps
- Step 1: Identify the Problem
- Step 2: Establish a Theory of Probable Cause
- Step 3: Test the Theory to Determine the Cause
- Step 4: Establish a Plan of Action to Resolve the Problem and Identify Potential Effects
- Step 5: Implement the Solution or Escalate as Necessary
- Step 6: Verify Full System Functionality and Implement Preventative Measures if Applicable
- Step 7: Document Findings, Actions, Outcomes, and Lessons Learned Throughout the Process
- Troubleshooting Tips
- Don't Overlook the Small Stuff
- Prioritize Your Problems
- Check the Software Configuration
- Don't Overlook Physical Conditions
- Don't Overlook Cable Problems
- Check for Viruses
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 19 Network Software Tools and Commands
- Software Tools
- Protocol Analyzer/Packet Capture
- Bandwidth Speed Testers
- Port Scanners
- NetFlow Analyzers
- Trivial File Transfer Protocol Server
- Connectivity Software
- IP Scanner
- Using traceroute
- Using ipconfig, ifconfig, and ip
- Using the ipconfig Utility
- Using the ifconfig Utility
- Using the ip Utility
- Using the iptables Utility
- Examples of iptables
- Using the ping Utility
- The Address Resolution Protocol
- The Windows ARP Table
- Using the arp Utility
- Using the nslookup Utility
- Resolving Names with the Hosts File
- Using the mtr Command (pathping)
- Using the Nmap Utility
- Using the route Command
- Using the route Command Options
- Some Examples of the route Command
- Using the netstat Utility
- The -e Switch
- The -r Switch
- The -s Switch
- The -p Switch
- The -n Switch
- Using tcpdump
- Examples of Using tcpdump
- Basic Networking Device Commands
- show running-config (Show Run)
- show config
- Cisco Discovery Protocol
- show ip route (route Command in Windows)
- show version
- show inventory
- show switch
- show mac-address-table
- show interface
- show arp
- show vlan
- show power
- Hardware Tools
- Toner/Toner Probe
- Cable Tester
- Taps
- Wi-Fi Analyzers
- Visual Fault Locator
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 20 Network Security Concepts
- Common Security Terminology
- Threats and Risk
- Vulnerability
- Exploit
- Confidentiality, Integrity, and Availability
- Encryption
- Certificates
- AAA Model
- Authentication
- Authorization
- Accounting
- Regulatory Compliance
- Policies, Processes, and Procedures
- Audit
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Chapter 21 Common Types of Attacks
- Technology-Based Attacks
- Denial of Service/Distributed Denial of Service
- DNS Poisoning/Spoofing
- VLAN Hopping
- ARP Spoofing/Poisoning
- Rogue Devices and Services
- Password Attacks
- MAC Spoofing
- IP Spoofing
- MAC Flooding
- Malware
- Human and Environmental
- Social Engineering
- Phishing
- Environmental
- Hardening Security
- Device Gardening
- Key Management
- Access Control Lists
- Content Filtering
- Implementing Network Segmentation
- Network Segmentation Enforcement
- Screened Subnet
- 802.1X
- NAC
- MAC Filtering
- Port Security
- Internet of Things
- Industrial Control Systems/Supervisory Control and Data Acquisition
- Separate Private/Public Networks
- Honeypot/Honeynet
- Bring Your Own Device
- Guest Network Isolation
- Physical Security Concepts
- Video Surveillance
- Door Locks
- Equipment Locks
- Summary
- Exam Essentials
- Written Lab
- Review Questions
- Appendix A: Answers to Written Labs
- Chapter 1: Introduction to Networks
- Chapter 2: The Open Systems Interconnection (OSI) Reference Model
- Chapter 3: Networking Connectors and Wiring Standards
- Chapter 4: The Current Ethernet Specifications
- Chapter 5: Networking Devices
- Chapter 6: Introduction to the Internet Protocol
- Chapter 7: IP Addressing
- Chapter 8: IP Subnetting, Troubleshooting IP, and Introduction to NAT
- Chapter 9: Introduction to IP Routing
- Chapter 10: Routing Protocols
- Chapter 11: Switching and Virtual LANs
- Chapter 12: Wireless Networking
- Chapter 13: Remote Network Access
- Chapter 14: Using Statistics and Sensors to Ensure Network Availability
- Chapter 15: Organizational Documents and Policies
- Chapter 16: High Availability and Disaster Recovery
- Chapter 17: Data Center Architecture and Cloud Concepts
- Chapter 18: Network Troubleshooting Methodology
- Chapter 19: Network Software Tools and Commands
- Chapter 20: Network Security Concepts
- Chapter 21: Common Types of Attacks
- Appendix B: Answers to ReviewQuestions
- Chapter 1: Introduction to Networks
- Chapter 2: The Open Systems Interconnection (OSI) Reference Model
- Chapter 3: Networking Connectors and Wiring Standards
- Chapter 4: The Current Ethernet Specifications
- Chapter 5: Networking Devices
- Chapter 6: Introduction to the Internet Protocol
- Chapter 7: IP Addressing
- Chapter 8: IP Subnetting, Troubleshooting IP, and Introduction to NAT
- Chapter 9: Introduction to IP Routing
- Chapter 10: Routing Protocols
- Chapter 11: Switching and Virtual LANs
- Chapter 12: Wireless Networking
- Chapter 13: Remote Network Access
- Chapter 14: Using Statistics and Sensors to Ensure Network Availability
- Chapter 15: Organizational Documents and Policies
- Chapter 16: High Availability and Disaster Recovery
- Chapter 17: Data Center Architecture and Cloud Concepts
- Chapter 18: Network Troubleshooting Methodology
- Chapter 19: Network Software Tools and Commands
- Chapter 20: Network Security Concepts
- Chapter 21: Common Types of Attacks
- Appendix C: Subnetting Class A
- Subnetting Practice Examples: Class A Addresses
- Practice Example #1A: 255.255.0.0 (/16)
- Practice Example #2A: 255.255.240.0 (/20)
- Practice Example #3A: 255.255.255.192 (/26)
- Subnetting in Your Head: Class A Addresses
- Written Lab C.1
- Written Lab C.2
- Answers to Written Lab C.1
- Answers to Written Lab C.2
- Index
- Online Test Bank
