CompTIA Network+ Study Guide

Name: CompTIA Network+ Study Guide | Exam N10-007
Brand: Wiley-Scrivener
Price: 32.99 EUR
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Exam N10-007

Todd Lammle(Autor*in)

Wiley-Scrivener (Verlag)

4. Auflage

Erschienen am 10. April 2018

1008 Seiten

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978-1-119-43222-7 (ISBN)

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Inhalt

Cover
Title Page
Copyright
Acknowledgments
About the Author
Contents at a Glance
Contents
Introduction
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
Wide Area Network
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
Selecting the Right Topology
The Network Backbone
Network Segments
CAN
SAN
Summary
Exam Essentials
Written Lab
Review Questions
Chapter 2 The Open Systems Interconnection Specifications
Internetworking Models
The Layered Approach
Advantages of Reference Models
The OSI Reference Model
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 Topologies, Connectors, and Wiring Standards
Physical Media
Coaxial Cable
Twisted-Pair 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
Contention Methods
Dynamic Host Configuration Protocol Server
IPAM
Other Specialized Devices
Multilayer Switch
Load Balancer
Domain Name Service Server
Proxy Server
Encryption Devices
Analog Modem
Packet Shaper
VPN Concentrator
Media Converter
VoIP PBX
VoIP Endpoint
NGFW/Layer 7 Firewall
VoIP Gateway
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
TCP/IP and the DoD Model
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 Autoconfiguration (EUI-64)
DHCPv6 (Stateful)
Migrating to IPv6
Summary
Exam Essentials
Written Labs
Written Lab 7.1
Written Lab 7.2
Written Lab 7.3
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)
VLSM 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 Availability
Hot Standby Router Protocol (HSRP)
Virtual Router Redundancy Protocol
Advanced IPv6 Concepts
Router Advertisement
Neighbor Discovery
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
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
Two Additional Advanced Features of Switches
Power over Ethernet (802.3af, 802.3at)
Port Mirroring/Spanning (SPAN/RSPAN)
Summary
Exam Essentials
Written Lab
Review Questions
Chapter 12 Wireless Networking
Introduction to Wireless Technology
Cellular
The 802.11 Standards
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)
Comparing 802.11 Standards
Range 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
Wireless Controllers
Mobile Hot Spots
Signal Degradation
Other Network Infrastructure Implementations
Technologies that facilitate the Internet of Things (IoT)
Installing and Configuring WLAN Hardware
Site Survey
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
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 Authentication and Access Control
Security Filtering
Access Control Lists
Tunneling
Encryption
Remote Access
Managing User Account and Password Security
Managing User Accounts
Managing Passwords
Single Sign-On
Local Authentication
LDAP
Certificates
Multifactor Authentication
User-Authentication Methods
Public Key Infrastructure (PKI)
Kerberos
Authentication, Authorization, and Accounting (AAA)
Web Services
Unified Voice Services
Network Controllers
Network Access Control (NAC)
Challenge Handshake Authentication Protocol (CHAP)
MS-CHAP
Extensible Authentication Protocol (EAP)
Hashes
Network Access Control
Summary
Exam Essentials
Written Lab
Review Questions
Chapter 14 Network Threats and Mitigation
Recognizing Security Threats
Denial of Service
Distributed DoS (DDoS)
Authentication Issues
Viruses
Zero-Day Attacks
Insider Threat/Malicious Employee
Vulnerabilities
Exploits vs. Vulnerabilities
Unnecessary Running Services
Open Ports
Unpatched/Legacy Systems
Unencrypted Channels
TEMPEST/RF Emanation
Malicious Users
Buffer Overflow
DNS Poisoning
Wireless Threats
Attackers and Their Tools
Misconfiguration Issues
Social Engineering (Phishing)
Understanding Mitigation Techniques
Active Detection
Passive Detection
Proactive Defense
Basic Forensic Concepts
Policies and Procedures
Security Policies
Security Training
Patches and Upgrades
Firmware Updates
Driver Updates
File Hashing
Generating New Keys
Upgrading vs. Downgrading
Asset Disposal
Detection
Anti-malware Software
Host Based
Cloud/Server Based
Configuration Backups
Updating Antivirus Components
Fixing an Infected Computer
Summary
Exam Essentials
Written Lab
Review Questions
Chapter 15 Physical Security and Risk
Using Hardware and Software Security Devices
Defining Firewalls
Network-Based Firewalls
Host-Based Firewalls
Firewall Technologies
Access Control Lists
Port Security
Demilitarized Zone
Protocol Switching
Dynamic Packet Filtering
Proxy Services
Firewalls at the Application Layer vs. the Network Layer
Stateful vs. Stateless Network Layer Firewalls
NGFW/Layer7 Firewall
Scanning Services and Other Firewall Features
Content Filtering
Signature Identification
Context Awareness
Virtual Wire vs. Routed
Zones
Intrusion Detection and Prevention Systems
Network-Based IDS
Host-Based IDS
Vulnerability Scanners
VPN Concentrators
Understanding Problems Affecting Device Security
Physical Security
Logical Security Configurations
Risk-Related Concepts
Summary
Exam Essentials
Written Lab
Review Questions
Chapter 16 Wide Area Networks
What's a WAN?
Defining WAN Terms
The Public Switched Telephone Network
WAN Connection Types
Bandwidth or Speed
T-Series Connections
The T1 Connection
The T3 Connection
Transmission Media
Wired Connections
Wavelength Division Multiplexing
Passive Optical Network
Wireless Technologies
Broadband Services
DSL Technology and xDSL
Cable Modem
Wireless WAN Technologies
Cellular WAN
WAN Protocols
Integrated Services Digital Network
Frame Relay Technology
Point-to-Point Protocol
DMVPN
SIP Trunks
Asynchronous Transfer Mode
MPLS
WAN Troubleshooting
Loss of Internet Connectivity
Interface Errors/Monitoring
Split Horizon
DNS Issues
Router Configurations
Company Security Policy
Summary
Exam Essentials
Written Lab
Review Questions
Chapter 17 Troubleshooting Tools
Protocol Analyzers
Throughput Testers
Connectivity Software
Using traceroute
Using ipconfig and ifconfig
Using the ifconfig Utility
Using the iptables utility
Using the ping Utility
Using the Address Resolution Protocol
The Windows ARP Table
Using the arp Utility
Using the nslookup Utility
Resolving Names with the Hosts Table
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 nbtstat Utility
The -a Switch
The -A Switch
The -c Switch
The -n Switch
The -r Switch
The -R Switch
The -S Switch
The -s Switch
Using the netstat Utility
The -a Switch
The -e Switch
The -r Switch
The -s Switch
The -p Switch
The -n Switch
Using tcpdump
Examples of Using tcpdump
Using the File Transfer Protocol
Starting FTP and Logging In to an FTP Server
Downloading Files
Uploading Files
Using the Telnet Utility
How to Enable Telnet in Windows
Don't Use Telnet, Use Secure Shell
Summary
Exam Essentials
Written Lab
Review Questions
Chapter 18 Software and Hardware Tools
Understanding Network Scanners
Packet Sniffers/Network Monitors
Intrusion Detection and Prevention Software
Port Scanners
Wi-Fi Analyzer
Bandwidth Speed Tester
Baseline
Network Monitoring and Logging
Network Monitoring
SNMP
Syslog
SIEM
Utilization
Identifying Hardware Tools
Cable Testers
Protocol Analyzer
Certifiers
Time-Domain Reflectometer
Optical Time-Domain Reflectometer
Multimeter
Spectrum Analyzer
Toner Generator (Probe)
Metrics
Butt Set
Punch-Down Tool
Cable Stripper/Snips
Voltage Event Recorder (Power)
Environmental Monitors
Summary
Exam Essentials
Written Lab
Review Questions
Chapter 19 Network Troubleshooting
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?
Troubleshooting Steps
Step 1: Identify the Problem
Step 2: Establish a Theory of Probable Cause
Step 3: Test the Theory to Determine 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 If Applicable, Implement Preventative Measures
Step 7: Document Findings, Actions, and Outcomes
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 20 Management, Monitoring, and Optimization
Managing Network Documentation
Using SNMP
Schematics and Diagrams
Network Monitoring
Baselines
Processes
On-Boarding and Off-Boarding of Mobile Devices
NAC
Policies, Procedures, and Regulations
Safety Practices
Implementing Network Segmentation
Network Optimization
Reasons to Optimize Your Network's Performance
How to Optimize Performance
Unified Communications
Traffic Shaping
Load Balancing
High Availability
Caching Engines
Fault Tolerance
Archives/Backups
Common Address Redundancy Protocol
Virtual Networking
Locating and Installing Equipment
Change Management Procedures
Summary
Exam Essentials
Written Lab
Review Questions
Appendix A Answers to Written Labs
Chapter 1: Introduction to Networks
Chapter 2: The Open Systems Interconnection Specifications
Chapter 3: Networking Topologies, 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
Written Lab 7.1
Written Lab 7.2
Written Lab 7.3
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: Authentication and Access Control
Chapter 14: Network Threats and Mitigation
Chapter 15: Physical Security and Risk
Chapter 16: Wide Area Networks
Chapter 17: Troubleshooting Tools
Chapter 18: Software and Hardware Tools
Chapter 19: Network Troubleshooting
Chapter 20: Management, Monitoring, and Optimization
Appendix B Answers to Review Questions
Chapter 1: Introduction to Networks
Chapter 2: The Open Systems Interconnection Specifications
Chapter 3: Networking Topologies, 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: Authentication and Access Control
Chapter 14: Network Threats and Mitigation
Chapter 15: Physical Security and Risk
Chapter 16: Wide Area Networks
Chapter 17: Troubleshooting Tools
Chapter 18: Software and Hardware Tools
Chapter 19: Network Troubleshooting
Chapter 20: Management, Monitoring, and Optimization
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 1
Written Lab 2
Answers to Written Lab 1
Answers to Written Lab 2
Index
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