CompTIA® Network+ N10-007, 6/e by Dulaney, Emmett -- Read -- Imperial Library of Trantor

Index

Cover Page Title Page Copyright Page Contents at a Glance Table of Contents About the Author Dedication Acknowledgments About the Technical Editor We Want to Hear from You! Reader Services Introduction Chapter 1: Introduction to Networking Technologies

Wired and Wireless Network Topologies

Bus Topology Ring Topology Star Topology Wired Mesh Topology Wireless Topologies Hybrid Topologies

Network Types

LANs WLANs WANs MANs CANs SANs PANs

IoT Technologies

Z-Wave Ant+ Bluetooth NFC IR RFID 802.11 The Magic Behind 802.11n and 802.11ac A Summary of 802.11 Wireless Standards

What’s Next?

Chapter 2: Models, Ports, Protocols, and Networking 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

Ports and Protocols

Connection-Oriented Protocols Versus Connectionless Protocols Internet Protocol Transmission Control Protocol User Datagram Protocol File Transfer Protocol Secure File Transfer Protocol Trivial File Transfer Protocol Simple Mail Transfer Protocol Hypertext Transfer Protocol Hypertext Transfer Protocol Secure Post Office Protocol Version 3/Internet Message Access Protocol Version 4 Telnet Secure Shell Internet Control Message Protocol Network Time Protocol Lightweight Directory Access Protocol H.323 Simple Network Management Protocol Session Initiation Protocol Remote Desktop Protocol Server Message Block Understanding Port Functions ARP and RARP

Network Services

Domain Name Service (DNS) The DNS Namespace Types of DNS Entries DNS Records DNS in a Practical Implementation Dynamic Host Configuration Protocol The DHCP Process DHCP and DNS Suffixes DHCP Relays and IP Helpers IP Address Management Network Time Protocol

What’s Next?

Chapter 3: Addressing, Routing, and Switching

IP Addressing

IPv4 IP Address Classes Subnet Mask Assignment Subnetting Identifying the Differences Between IPv4 Public and Private Networks Classless Interdomain Routing Default Gateways Virtual IP IPv4 Address Types IPv6 Addressing Comparing IPv4 and IPv6 Addressing Assigning IP Addresses Identifying MAC Addresses NAT, PAT, SNAT, and DNAT

Managing TCP/IP Routing and Switching

The Default Gateway Routing Tables Static Routing Switching Methods Software-Defined Networking Dynamic Routing Network Traffic Routing Metrics Virtual Local-Area Networks The Spanning Tree Protocol Interface Configuration and Switch Management Trunking Port Mirroring Port Authentication Power over Ethernet DMZ MAC Address Table Switch Management Managed and Unmanaged Quality of Service Traffic Shaping Access Control Lists

What’s Next?

Chapter 4: Network Components and Devices

Common Network Devices

Firewall Router Switch Hub Bridge Modems Wireless Access Point Media Converter Wireless Range Extender VoIP Endpoint Network Devices Summary

Advanced Networking Devices

Multilayer Switch Wireless Controller Load Balancer IDS/IPS Proxy Server VPN Concentrator AAA/RADIUS Server UTM Appliances and NGFW/Layer 7 Firewalls VoIP PBX and Gateway Content Filter

What’s Next?

Chapter 5: WAN Technologies

WAN Technologies

Integrated Services Digital Network Leased Lines Fiber, SONET, and OCx Levels Frame Relay Asynchronous Transfer Mode Copper Versus Fiber Other WAN Technologies

Internet Access Technologies

DSL Internet Access Cable Broadband Broadband Security Considerations Dial-up The Public Switched Telephone Network Satellite Internet Access Wireless Internet Access Termination Points

What’s Next?

Chapter 6: Cabling Solutions

General Media Considerations

Broadband Versus Baseband Transmissions Simplex, Half-Duplex, and Full-Duplex Modes Data Transmission Rates Types of Network Media Types of Media Connectors Media Couplers/Converters 568A and 568B Wiring Standards Straight-Through Versus Crossover Cables Rollover and Loopback Cables Components of Wiring Distribution Ethernet Deployment Standards

Troubleshooting Common Wired Connectivity Issues

Attenuation Latency Jitter Crosstalk EMI Open/Short Incorrect Pin-Out Incorrect Cable Types Bad Port Transceiver Mismatch TX/RX Reversed Duplex/Speed Mismatch Damaged Cables Bent Pins Bottlenecks VLAN Mismatch Network Connection LED Status Indicators

What’s Next?

Chapter 7: Wireless Solutions

Understanding Wireless Basics

Wireless Channels and Frequencies Cellular Access Speed, Distance, and Bandwidth Channel Bonding MIMO/MU-MIMO/Unidirectional/Omnidirectional Site Surveys Establishing Communications Between Wireless Devices Configuring the Wireless Connection

Troubleshooting Wireless Issues

Factors Affecting Wireless Signals Troubleshooting AP Coverage

What’s Next?

Chapter 8: Cloud Computing and Virtualization

Cloud Concepts

Software as a Service Platform as a Service Infrastructure as a Service Other Types of Services Private Cloud Public Cloud Hybrid Cloud Connectivity Methods Security Implications and Considerations The Relationship Between Resources

Virtualization and Storage-Area Networks

Virtualization Storage-Area Networks

What’s Next?

Chapter 9: Network Operations

Documentation Management

Wiring and Port Locations Physical and Logical Network Diagrams Baselines Policies, Procedures, Configurations, and Regulations Labeling

Business Continuity and Disaster Recovery

Backups Backup Best Practices Using Uninterruptible Power Supplies Alternatives to UPS Hot, Warm, and Cold Sites High Availability and Recovery Concepts

Monitoring Network Performance

Common Reasons to Monitor Networks SNMP Monitors Packet Sniffers Throughput Testing Port Scanners Vulnerability Scanners Network Performance, Load, and Stress Testing Tracking Event Logs

Remote Access

Remote File Access VPNs Site-to-Site and Client-to-Site HTTPS/Management URL Out-of-Band Management

What’s Next?

Chapter 10: Network Security

Physical Security and Device Hardening

Adding Physical Security to the Mix Two-Factor and Multifactor Authentication Secured Versus Unsecured Protocols Additional Device Hardening

Authentication and Access Controls

Mandatory Access Control Discretionary Access Control Rule-Based Access Control Role-Based Access Control RADIUS and TACACS+ Kerberos Authentication Local Authentication Lightweight Directory Access Protocol Using Certificates Auditing and Logging Multifactor Authentication Factors Access Control

Securing Wireless Networks

WPA, WPA2, TKIP-RC4, and CCMP-AES Wireless Authentication and Authorization Shared, Preshared, and Open Keys

Common Networking Attacks

Denial-of-Service and Distributed Denial-of-Service Attacks Other Common Attacks Vulnerabilities and Prevention

Mitigation Techniques

Signature Management Device Hardening Change Native VLAN Switch and Port Protection Demilitarized Zones (Perimeter Network) VLAN Network Segmentation Privileged User Account File Integrity Monitoring Role Separation Using ACLs to Restrict Access Honeypots and Honeynets Penetration Testing

What’s Next?

Chapter 11: Network Troubleshooting

Troubleshooting Steps and Procedures

Identify the Problem Establish a Theory of Probable Cause Test the Theory to Determine Cause Establish a Plan of Action Implement the Solution or Escalate Verify Full System Functionality Document the Findings, Actions, and Outcomes

Hardware and Software Troubleshooting Tools

Wire Crimpers, Strippers, and Snips Tone Generator and Probes Loopback Adapter Protocol Analyzer Media/Cable Testers TDR and OTDR Multimeter Spectrum Analyzer Packet Sniffers Port Scanner Wi-Fi Analyzer Bandwidth Speed Tester and Looking Glasses Environmental Monitors

Command-Line Troubleshooting Tools

The Trace Route Utility (tracert/traceroute) ping ARP The netstat Command ipconfig ifconfig nslookup dig The tcpdump Command The route Utility nmap

Troubleshooting Common Network Service Issues

Common Problems to Be Aware Of Hardware Failure

What’s Next?

Glossary Index

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