CompTIA Network+ N10-009 Exam Cram

Emmett Dulaney (CompTIA Network+, Cloud+, Security+, A+, and others) has been the author of several books on certifications and operating systems over the past 25 years. He is a columnist for Certification Magazine and a professor at a small university in Indiana. He is currently the editor of a journal devoted to business education (and the business of education).

Introduction
CHAPTER 1 Networking Models, Ports, Protocols, and Services
The OSI Networking Model
    The OSI Seven-Layer Model
    Comparing OSI to the Four-Layer TCP/IP Model
    Identifying the OSI Layers at Which Various Network Components Operate
    Data Encapsulation/Decapsulation and OSI
Ports, Protocols, Services, and Traffic Types
    Connection-Oriented Protocols Versus Connectionless Protocols
    Internet Protocol
    Transmission Control Protocol
    User Datagram Protocol
    Internet Control Message Protocol
    IPsec
    Generic Routing Encapsulation
    File Transfer Protocol (FTP)
    Secure File Transfer Protocol (SFTP)
    Secure Shell (SSH)
    Telnet
    Simple Mail Transfer Protocol (SMTP)
    Domain Name System (DNS)
    Dynamic Host Configuration Protocol (DHCP)
    Trivial File Transfer Protocol (TFTP)
    Hypertext Transfer Protocol (HTTP)
    Network Time Protocol (NTP)
    Simple Network Management Protocol (SNMP)
    Lightweight Directory Access Protocol (LDAP)
    Hypertext Transfer Protocol Secure (HTTPS)
    Server Message Block (SMB)
    Syslog
    Simple Mail Transfer Protocol Secure (SMTPS)
    Lightweight Directory Access Protocol over SSL (LDAPS)
    Structured Query Language (SQL) Server
    Remote Desktop Protocol (RDP)
    Session Initiation Protocol (SIP)
    Understanding Port Functions
    Traffic Types
What’s Next?
CHAPTER 2 Network Topologies, Architectures, and Types
Network Topologies
    Star/Hub and Spoke
    Mesh Topology
    Hybrid Topology
    Point to Point
    Spine and Leaf
    Three-Tier Hierarchical Model
    Collapsed Core
    Traffic Flows
    Older Topologies: Bus and Ring
What’s Next?
CHAPTER 3 Network Addressing, Routing, and Switching
IPv4 Network Addressing
    An Overview of IPv4
    IP Address Classes
    Subnet Mask Assignment
    Subnetting
    Identifying the Differences Between IPv4 Public and Private Networks
    Classless Interdomain Routing
    Default Gateways
    Assigning IP Addresses
    Identifying MAC Addresses
Routing and Switching Technologies
    The Default Gateway
    Routing Tables
    Static Routing
    Default Route
    Switching Methods
    Dynamic Routing
    Route Selection
    Address Translation
    First Hop Redundancy Protocol (FHRP)
    Virtual IP
    Subinterfaces
    Virtual Local-Area Networks
    Interface Configuration and Switch Management
    Voice VLAN
    Trunking
    The Spanning Tree Protocol (STP)
    Maximum Transmission Unit (MTU)
Network Services
    Dynamic Host Configuration Protocol
    The DHCP Process
    DHCP and DNS Suffixes
    DHCP Relays and IP Helpers
    Domain Name Service (DNS)
    The DNS Namespace
    Types of DNS Entries
    DNS Records
    DNS in a Practical Implementation
    Time Protocols
What’s Next?
CHAPTER 4 Network Implementations
Common Networking Devices
    Router
    Switch
    Firewall
    IDS/IPS
    Load Balancer
    Proxy Server
    Network-Attached Storage (NAS)
    Storage-Area Networks
    Wireless Access Point
    Wireless LAN Controller
    Applications/Content Delivery Network
    VPNs
    Quality of Service
    Time To Live (TTL)
Networking Use Cases
    Software-Defined Networking
    Virtual Extensible Local-Area Network (VXLAN)
    Zero Trust Architecture (ZTA)
    Secure Access Secure Edge (SASE)/Security Service Edge (SSE)
    Infrastructure as Code (IaC)
    IPv6 Addressing
    Comparing IPv4 and IPv6 Addressing
What’s Next?
CHAPTER 5 Cabling Solutions and Issues
General Media Considerations
    Broadband Versus Baseband Transmissions
    Simplex, Half-Duplex, and Full-Duplex Modes
    Data Transmission Rates
    Wired Versus Wireless
    Types of Wired Network Media
    Types of Media Connectors
    Media Couplers/Converters
    TIA/EIA 568A and 568B Wiring Standards
    Straight-Through Versus Crossover Cables
    Rollover and Loopback Cables
    Ethernet Copper and Fiber Standards
    Multiplexing Options
Troubleshooting Common Cable Connectivity Issues
Limitations, Considerations, and Issues
    Throughput, Speed, and Distance
    Cabling Specifications/Limitations
    Cabling Considerations
    Cabling Issues
    Signal Degradation
    Interference
    Improper Termination
    Incorrect Pinout
    Bad Ports
    Open/Short
    LED Status Indicators
    Duplexing Issues
    TX/RX Reversed
    Dirty Optical Cables
    Interface Issues
Hardware Issues
    Power over Ethernet Issues
    Transceiver Issues
Common Tools
    Cable Crimpers, Strippers, and Snips/Cutters
    Punchdown Tools
    Tone Generator
    Loopback Adapter
    TDR/OTDR
    Multimeter
    Cable Tester
    Wire Map
    Tap
    Fusion Splicer
    Spectrum Analyzer
    Fiber Light Meter
What’s Next?
CHAPTER 6 Wireless Solutions
Understanding Wireless Basics
    Wireless Channels and Frequencies
    Speed, Distance, and Bandwidth
    Channel Bonding
    MIMO/MU-MIMO/Directional/Omnidirectional
    Network Types
    Establishing Communications Between Wireless Devices
    Guest Networks
    Configuring the Wireless Connection
    Autonomous and Lightweight Access Points
What’s Next?
CHAPTER 7 Cloud Computing Concepts and Options
Cloud Concepts
    Service Models
    Software as a Service
    Platform as a Service
    Infrastructure as a Service
    Deployment Models
    Private Cloud
    Public Cloud
    Hybrid Cloud
    Multitenancy
    Elasticity
    Scalability
    Network Functions Virtualization (NFV)
    Cloud Connectivity Options
    Virtual Private Cloud (VPC)
    Cloud Gateways
    Network Security, Groups, and Lists
What’s Next?
CHAPTER 8 Network Operations
Physical Installation Factors
    Components of Wiring Distribution
    Using Uninterruptible Power Supplies
    Beyond the UPS
    Environmental Factors
Organizational Processes and Procedures
    Wiring and Port Locations
    Physical and Logical Network Diagrams
    Baseline/Golden Configurations
    Policies, Procedures, Configurations, and Regulations
    Labeling
Monitoring Network Performance
    Common Performance Metrics
    SNMP
    Network Performance, Load, and Stress Testing
    Network Device Logs
Disaster Recovery and High Availability
    Backups
    Backup Best Practices
    Cold, Warm, Hot, and Cloud Sites
    High-Availability Approaches and Recovery Concepts
    Active-Active Versus Active-Passive
    DR Testing
Network Access and Management Methods
    Site-to-Site VPN
    Client-to-Site VPN
    Connection Methods
    Jump Box
    In-Band Versus Out-of-Band Management
What’s Next?
CHAPTER 9 Network Security
Common Security Concepts
    Encryption
    Access Control
    Mandatory Access Control
    Discretionary Access Control
    Rule-Based Access Control
    Role-Based Access Control
    Defense in Depth
    Separation of Duties
    Deception Technologies: Honeypots and Honeynets
    RADIUS and TACACS+
    Kerberos Authentication
    Local Authentication
    Lightweight Directory Access Protocol
    Using Certificates
    Identity and Access Management (IAM)
    Security Assertion Markup Language (SAML)
    Multifactor Authentication Factors
    Auditing and Regulatory Compliance
    Additional Access Control Methods
    Risk Management
    Penetration Testing
    Security Information and Event Management
Common Networking Attacks
    Denial-of-Service and Distributed Denial-of-Service Attacks
    Other Common Attacks
    Vulnerabilities and Prevention
Applying Network Security
    Disposing of Assets
    Secured Versus Unsecured Protocols
    Key Management
    Hardening Best Practices
    Wireless Security
    Working with Zones
What’s Next?
CHAPTER 10 Network Troubleshooting
Troubleshooting Steps and Procedures
    Identify the Problem
    Establish a Theory of Probable Cause
    Test the Theory to Determine the Cause
    Establish a Plan of Action
    Implement the Solution or Escalate
    Verify Full System Functionality
    Document Findings, Actions, Outcomes, and Lessons Learned Throughout the Process
Troubleshooting Common Networking Issues
    Common Considerations
    Common Problems to Be Aware Of
    Hardware Failure
    Network Performance Issues
    Wireless Issues
    Site Surveys
    Factors Affecting Wireless Signals
    Troubleshooting AP Coverage
Troubleshooting Tools
    Toner
    Cable Tester
    Taps
    Visual Fault Locator
    Wi-Fi Analyzer
    Protocol Analyzer
    Speed Tester
    Port Scanner
    LLDP and CDP
    NetFlow Analyzer
    TFTP Server
    Terminal Emulator
    IP Scanner
    Command-Line Tools
    The Trace Route Utility (tracert/traceroute)
    ping
    ARP
    The netstat Command
    ipconfig
    ifconfig
    nslookup
    dig
    The tcpdump Command
    The route Utility
    nmap
    Basic Networking Device Commands
What’s Next?
Cram Sheet

Online
Glossary

9780135340837    TOC    7/25/2024