CompTIA Network+ Certification All-in-One Exam Guide

Cover
Title Page
Copyright Page
Dedication
Contents at a Glance
Contents
Acknowledgments
Introduction
Chapter 1 Network Models
Historical/Conceptual
Working with Models
Biography of a Model
Network Models
The OSI Seven-Layer Model on a Simple Network
Welcome to MHTechEd!
Test Specific
Let’s Get Physical—Network Hardware and Layers 1–2
Beyond the Single Wire—Network Software and Layers 3–7
The OSI Seven-Layer Model and Remote Work
Chapter Review
Questions
Answers
Chapter 2 Cabling and Topology
Test Specific
Network Topologies
Bus and Ring
Star
Hybrid
Mesh
Parameters of a Topology
Cabling and Connectors
Copper Cabling and Connectors
Fiber-Optic Cabling and Connectors
Fire Ratings
Networking Industry Standards—IEEE
Chapter Review
Questions
Answers
Chapter 3 Ethernet Basics
Historical/Conceptual
Ethernet
802.3 Standards
Test Specific
Ethernet Frames
Early Ethernet Standards
Bus Ethernet
10BASE-T
10BASE-FL
CSMA/CD
Enhancing and Extending Ethernet Networks
The Trouble with Hubs
Switches to the Rescue
Connecting Ethernet Segments
Troubleshooting Switches
Chapter Review
Questions
Answers
Chapter 4 Ethernet Standards
Test Specific
100-Megabit Ethernet
100BASE-T
100BASE-FX
100BASE-SX
Full-Duplex Ethernet
Gigabit Ethernet
1000BASE-SX
1000BASE-LX
SFF Fiber Connectors
Mechanical Connection Variations
Implementing Multiple Types of Gigabit Ethernet
Ethernet Evolutions
10 Gigabit Ethernet
Chapter Review
Questions
Answers
Chapter 5 Installing a Physical Network
Historical/Conceptual
Understanding Structured Cabling
Cable Basics—A Star Is Born
Test Specific
Structured Cable—Network Components
Structured Cable—Beyond the Star
Installing Structured Cabling
Getting a Floor Plan
Mapping the Runs
Determining the Location of the Telecommunications Room
Pulling Cable
Making Connections
Testing the Cable Runs
NICs
Buying NICs
Link Lights
Diagnostics and Repair of Physical Cabling
Diagnosing Physical Problems
Check Your Lights
Check the NIC
Cable Testing
Problems in the Telecommunications Room
Toners
Chapter Review
Questions
Answers
Chapter 6 TCP/IP Basics
Historical/Conceptual
Test Specific
The TCP/IP Protocol Suite
Network Layer Protocols
Transport Layer Protocols
Application Layer Protocols
IP and Ethernet
IP Addresses
IP Addresses in Action
Class IDs
CIDR and Subnetting
Subnetting
CIDR: Key Takeaways
IP Address Assignment
Static IP Addressing
Dynamic IP Addressing
Special IP Addresses
Chapter Review
Questions
Answers
Chapter 7 Routing
Historical/Conceptual
How Routers Work
Test Specific
Routing Tables
Freedom from Layer 2
Network Address Translation
Dynamic Routing
Routing Metrics
Distance Vector and Path Vector
Link State
EIGRP
Dynamic Routing Makes the Internet
Route Redistribution and Administrative Distance
Working with Routers
Connecting to Routers
Basic Router Configuration
Router Problems
Chapter Review
Questions
Answers
Chapter 8 TCP/IP Applications
Historical/Conceptual
Transport Layer and Network Layer Protocols
How People Communicate
Test Specific
TCP
UDP
ICMP
IGMP
The Power of Port Numbers
Registered Ports
Connection Status
Rules for Determining Good vs. Bad Communications
Common TCP/IP Applications
Telnet and SSH
E-mail
SQL
FTP
HTTP and HTTPS
TCP/IP Applications Chart
Beyond Network+
Other Layer 7 Applications
Chapter Review
Questions
Answers
Chapter 9 Network Naming
Historical/Conceptual
Before DNS
NetBIOS
hosts
Test Specific
DNS
How DNS Works
Administering DNS Servers
Troubleshooting DNS on Clients
Diagnosing TCP/IP Network Issues
Chapter Review
Questions
Answers
Chapter 10 Securing TCP/IP
Historical/Conceptual
Making TCP/IP Secure
Encryption
Integrity
Nonrepudiation
Test Specific
Authentication
Authorization
TCP/IP Security Standards
User Authentication Standards
Encryption Standards
Combining Authentication and Encryption
Secure TCP/IP Applications
HTTPS
Securing E-Mail Protocols
SCP
SFTP
SNMP
LDAP
NTP
Chapter Review
Questions
Answers
Chapter 11 Switch Features
Test Specific
Switch Management
Access Management
Port Configuration
Port Security
Virtual LANs
Trunking
Configuring a VLAN-Capable Switch
Assigning VLANs and Tagging
VLAN Trunking Protocol
Inter-VLAN Routing
DHCP and VLANs
Voice VLANs
Private VLANs
Troubleshooting VLANs
Multilayer Switches
Load Balancing
QoS and Traffic Shaping
Port Bonding
Network Protection
Chapter Review
Questions
Answers
Chapter 12 IPv6
Test Specific
IPv6 Concepts
IPv6 Addresses
Neighbor Discovery
IPv6 Implementations
Stateless Address Autoconfiguration (SLAAC)
Aggregation
IPv6 and DNS
Moving to IPv6
IPv4 and IPv6
Transition Mechanisms
Chapter Review
Questions
Answers
Chapter 13 WAN Connectivity
Historical/Conceptual
WAN Technologies
SONET
Test Specific
Fiber Improvements
Private WANs
Last-Mile Technologies
DSL
Broadband Cable
Satellite
Fiber
Cellular WAN
Which Connection?
Remote Access
Remote Terminal
Virtual Private Networks
WAN Troubleshooting Scenarios
Loss of Internet Connectivity
Interface Errors
DNS Issues
Interference
Chapter Review
Questions
Answers
Chapter 14 Wireless Networking
Historical/Conceptual
Test Specific
Wi-Fi Standards
802.11
802.11b
802.11a
802.11g
802.11n
802.11ac
802.11ax
WPS
Wi-Fi Security
Enterprise Wireless
Implementing Wi-Fi
Performing a Site Survey
Installing the Client
Setting Up an Ad Hoc Network
Setting Up an Infrastructure Network
Extending the Network
Verifying the Installation
Troubleshooting Wi-Fi
No Connection
Slow Connection
Weird Connection
Chapter Review
Questions
Answers
Chapter 15 Virtualization and Cloud Computing
Test Specific
Virtualization and Cloud Computing Concepts
Virtualization
Cloud Computing
Infrastructure as Code
Virtual Networking
Putting Network Virtualization and Cloud Computing to Work
Setting Up Rocket.Chat in a Local Hypervisor
Managing Cloud Resources
Setting Up Rocket.Chat on IaaS
Desktop as a Service
Interconnecting Local and Cloud Resources
Chapter Review
Questions
Answers
Chapter 16 Data Centers
Test Specific
Classic Data Center Architecture and Design
Tiers
Traffic Flows
Data Storage
Where Is the Classic Data Center?
The Modern Data Center
Virtualization
Software-Defined Networking
Spine and Leaf
High Availability in the Data Center
Load Balancing
Redundancy
Facilities and Infrastructure Support
Documenting the Data Center
Network Diagrams
Baseline Configurations
Assessments
Chapter Review
Questions
Answers
Chapter 17 Integrating Network Devices
Test Specific
Internet of Things
IoT Home Automation
IoT Home Security
IoT Communications Technologies
Hardening IoT Devices
Unified Communication
It Started with VoIP
Unified Communication Features
VTC and Medianets
UCaaS
ICS
DCS
PLC
SCADA
Chapter Review
Questions
Answers
Chapter 18 Network Operations
Test Specific
Risk Management
Hardening and Security Policies
Change Management
Patching and Updates
Training
Common Agreements
Security Preparedness
Contingency Planning
Incident Response
Disaster Recovery
Business Continuity
Forensics
Chapter Review
Questions
Answers
Chapter 19 Protecting Your Network
Test Specific
Security Concepts
CIA
Zero Trust
Defense in Depth
Separation of Duties
Network Threats
Threat Terminology
Spoofing
Packet/Protocol Abuse
Zero-Day Attacks
Rogue Devices
ARP Cache Poisoning
Denial of Service
On-Path Attack
Session Hijacking
Password Attacks
Physical/Local Access
Malware
Social Engineering
Common Vulnerabilities
Unnecessary Running Services
Unpatched/Legacy Systems
Unencrypted Channels
Cleartext Credentials
RF Emanation
Hardening Your Network
Physical Security
Network Security
Device Hardening
Host Security
Firewalls
Types of Firewalls
Implementing and Configuring Firewalls
Troubleshooting Firewalls
Chapter Review
Questions
Answers
Chapter 20 Network Monitoring
Test Specific
SNMP
Monitoring Tools
Packet Sniffers
Protocol Analyzers
Sensors
Interface Monitors
Performance Monitors
Putting It All Together
Scenario: Monitoring and Managing
SIEM
Chapter Review
Questions
Answers
Chapter 21 Network Troubleshooting
Test Specific
Troubleshooting Tools
Hardware Tools
Software Tools
The Troubleshooting Process
Identify the Problem
Establish a Theory of Probable Cause
Test the Theory to Determine the Cause
Establish a Plan of Action and Identify Potential Effects
Implement the Solution or Escalate as Necessary
Verify Full System Functionality and Implement Preventive Measures
Document Findings, Actions, Outcomes, and Lessons Learned
Resolving Common Network Service Issues
“We Can’t Access Our Web Server in Istanbul!”
Network Troubleshooting Considerations
Hands-On Problems
Nearby Problems
Far-flung Problems
Network Performance Issues
Troubleshooting Is Fun!
Chapter Review
Questions
Answers
Appendix A Exam Objective Map
Exam N10-008
Appendix B Create Your Study Plan
Review Your Overall Score
Review Your Score by CompTIA Network+ Exam Domain
Appendix C About the Online Content
System Requirements
Your Total Seminars Training Hub Account
Privacy Notice
Single User License Terms and Conditions
TotalTester Online
Pre-Assessment
Create Your Study Plan
Playing the CompTIA Network+ Introduction Video
Mike’s CompTIA Network+ Video Training Sample
TotalSims Sample for CompTIA Network+
Mike’s Cool Tools
Technical Support
Glossary
Index