CompTIA Network+ N10-004 Exam Cram (Exam Cram (Pearson))

Cover
Table of Contents
Introduction
Self-Assessment
Chapter 1: Introduction to Networking
	Introduction
	LANs, WANs, MANs, and WPANs
		LANs
		WANs
		Metropolitan Area Networks (MANs)
		WPANs
	Network Models
		Peer-to-Peer Networking Model
		Client/Server Networking Model
		Comparing Peer-to-Peer and Client/Server Network Models
	Centralized and Distributed Computing
	Virtual Private Networks (VPNs)
		Components of the VPN Connection
		VPN Pros and Cons
	Virtual Local Area Networks (VLANs)
		VLAN Membership
	Network Topologies
		Bus Topology
		Ring Topology
		Star Topology
		Wired Mesh Topology
		Wireless Topologies
		Point-to-Point, Point-to-Multipoint, and Wireless Mesh Topologies
		Hybrid Topologies
	Review and Test Yourself
		The Facts
		Key Terms
		Exam Prep Questions
		Answers to Exam Prep Questions
	Need to Know More?
Chapter 2: Cabling, Connectors, and Ethernet Standards
	Introduction
	General Media Considerations
		Broadband Versus Baseband
		Simplex, Half Duplex, and Full Duplex
		Media Interference
		Attenuation
		Data Transmission Rates
	Network Media
		Twisted-Pair Cabling
		Coaxial
		Fiber-Optic Cable
		Plenum Cables
	Media Connectors
		BNC Connectors
		RJ-11 Connectors
		RJ-45 Connectors
		F-Type Connectors and RG-59 and RG-6
		Fiber Connectors
		RS-232 Standard
		IEEE 1394
		Universal Serial Bus (USB)
	568A and 568B Wiring Standards
	Straight Versus Crossover Cable
	Rollover and Loopback Cables
		Loopback Cable
	Components of Wiring Distribution
		Network Cross-Connects
		Horizontal Cabling
		Vertical Cable
		Patch Panels
		Type 66 and Type 110 Punchdown Blocks
		MDF and IDF
		Demarc, Demarc Extension, and Smart Jacks
		Verify Wiring Installation and Termination
	IEEE and Overview of Networking Standards
		IEEE 802.2 Standard
		IEEE 802.3x Standard Characteristics
	802.3 Ethernet Standards
		10BaseT
		10BaseFL
		Fast Ethernet
		Gigabit Ethernet: 1000BaseX
		1000BaseT
		10 Gigabit Ethernet
		10GBaseT
	Review and Test Yourself
		The Facts
		Key Terms
		Exam Prep Questions
		Answers to Exam Prep Questions
	Need to Know More?
Chapter 3: Networking Components and Devices
	Introduction
	Hubs
	MSAU
	Switches
		Hub and Switch Cabling
	Bridges
		Bridge Placement and Bridging Loops
		Types of Bridges
	Routers
	Gateways
	Network Cards
		Types of Network Interfaces
		Installing Network Cards
	Media Converters
	Wireless Access Points
	Modems
	Firewalls
	DHCP Server
	Repeaters
	Specialized Network Devices
		Multilayer and Content Switches
		Intrusion Detection and Prevention Systems
		Load Balancer
		Multifunction Network Devices
		DNS Server
		Bandwidth Shaper
		Proxy Server
		CSUs/DSUs
		Network Devices Summary
	Advanced Features of a Switch
		Power over Ethernet (PoE)
		Spanning Tree
		Trunking
		Port Mirroring
		Port Authentication
	Review and Test Yourself
		The Facts
		Key Terms
		Exam Prep Questions
		Answers to Exam Prep Questions
	Need to Know More?
Chapter 4: OSI Model and Network Protocols
	Introduction
	The OSI Seven-Layer Model
		Physical Layer (Layer 1)
		Data Link Layer (Layer 2)
		Network Layer (Layer 3)
		Transport Layer (Layer 4)
		Session Layer (Layer 5)
		Presentation Layer (Layer 6)
		Application Layer (Layer 7)
		OSI Model Summary
	Identifying the OSI Layers at Which Various Network Components Operate
	Connectionless and Connection-Oriented Protocols
	Introduction to Protocols
		Internet Protocol (IP)
		Transmission Control Protocol (TCP)
		User Datagram Protocol (UDP)
		File Transfer Protocol (FTP)
		Secure File Transfer Protocol (SFTP)
		Trivial File Transfer Protocol (TFTP)
		Simple Mail Transfer Protocol (SMTP)
		Hypertext Transfer Protocol (HTTP)
		Hypertext Transfer Protocol Secure (HTTPS)
		Post Office Protocol Version 3/Internet Message Access Protocol Version 4 (POP3/IMAP4)
		Telnet
		Secure Shell (SSH)
		Internet Control Message Protocol (ICMP)
		Address Resolution Protocol (ARP)/Reverse Address Resolution Protocol (RARP)
		Network Time Protocol (NTP)
		Network News Transfer Protocol (NNTP)
		Secure Copy Protocol (SCP)
		Lightweight Directory Access Protocol (LDAP)
		Internet Group Management Protocol (IGMP)
		Domain Name System (DNS)
		Simple Network Management Protocol (SNMP)
		Dynamic Host Configuration Protocol (DHCP)
		Transport Layer Security
		Session Initiation Protocol (SIP)/Real-Time Transport Protocol (RTP)
		TCP/IP Protocol Suite Summary
	Review and Test Yourself
		The Facts
		Key Terms
		Exam Prep Questions
		Answers to Exam Prep Questions
	Need to Know More?
Chapter 5: TCP/IP Routing and Addressing
	Introduction
		IP Addressing
		IPv4
		IP Address Classes
		Subnet Mask Assignment
		Subnetting
	Identifying the Differences Between IPv4 Public and Private Networks
		Private Address Ranges
		Classless Interdomain Routing (CIDR)
		Default Gateways
		IPv4 Address Types
		IPv6 Addressing
		Comparing IPv4 and IPv6 Addressing
	Assigning IP Addresses
		Static Addressing
		Dynamic Addressing
		BOOT Protocol (BOOTP)
		APIPA
	Identifying MAC Addresses
	NAT, PAT, and SNAT
		Network Address Translation (NAT)
		PAT and SNAT
	TCP/UDP Port Functions
	Managing TCP/IP Routing
		The Default Gateway
		Routing Tables
		Static Routing
		Dynamic Routing
	Review and Test Yourself
		The Facts
		Key Terms
		Exam Prep Questions
		Answers to Exam Prep Questions
	Need to Know More?
Chapter 6: WAN Technologies and Internet Access
	WAN Technologies
		Switching Methods
		Integrated Services Digital Network (ISDN)
		T-carrier Lines
		SONET/OCx Levels
		X.25 and Frame Relay
		Asynchronous Transfer Mode (ATM)
		Summary of WAN Technologies
	Internet Access Technologies
		xDSL Internet Access
		Cable Internet Access
		Broadband Security Considerations
		POTS Internet Access
		The Public Switched Telephone Network (PSTN)
		Satellite Internet Access
		Wireless Internet Access
		MPLS
	Review and Test Yourself
		The Facts
		Key Terms
		Exam Prep Questions
		Answers to Exam Prep Questions
	Need to Know More?
Chapter 7: Wireless Networking
	Introduction
		Wireless Access Points
		Working with APs
		Wireless Antennas
		Antenna Ratings
		Antenna Coverage
	Wireless Radio Channels
		Data Rate Versus Throughput
	Factors Affecting Wireless Signals
		Interference Types
		Spread-Spectrum Technology
		Orthogonal Frequency Division Multiplexing
		Beacon Management Frame
	802.11 Wireless Standards
		The Magic Behind 802.11n
		Summary of 802.11 Wireless Standards
	Securing Wireless Networks
		Wired Equivalent Privacy (WEP)
		Wi-Fi Protected Access (WPA)
		802.1X
		Temporal Key Integrity Protocol
	Establishing Communications Between Wireless Devices
	Configuring the Wireless Connection
	Access Point Coverage
	Wireless Signal Quality
	Wireless Troubleshooting Checklist
	Infrared Wireless Networking
	Bluetooth
	Review and Test Yourself
		The Facts
		Key Terms
		Exam Prep Questions
		Answers to Exam Prep Questions
	Need to Know More?
Chapter 8: Network Performance Optimization
	Introduction
	What Is Uptime?
	The Risks
	Fault Tolerance
		Disk-Level Fault Tolerance
		Server and Services Fault Tolerance
		Link Redundancy
		Using Uninterruptible Power Supplies
	Disaster Recovery
		Full Backup
		Differential Backup
		Incremental Backup
		Tape Rotations
		Backup Best Practices
		Hot and Cold Spares
		Hot, Warm, and Cold Sites
	Network Optimization Strategies
		QoS
		Traffic Shaping
		Caching Engines
	Working with Command-Line Utilities
		Troubleshooting with Diagnostic Utilities
		The Trace Route Utility (tracert/traceroute)
		ping
		ARP
		The netstat Command
		nbtstat
		The ipconfig Command
		ifconfig
		nslookup
		dig
		mtr
		The host Command
		The route Utility
	Review and Test Yourself
		The Facts
		Key Terms
		Exam Prep Questions
		Answers to Exam Prep Questions
	Need to Know More?
Chapter 9: Network Security
	Introduction
	Firewalls
		Stateful and Stateless Firewalls
		Packet-Filtering Firewalls
		Circuit-Level Firewalls
		Application Layer Firewalls
		Comparing Firewall Types
		Firewall Wrap-up
		Demilitarized Zones (Perimeter Network)
	Other Security Devices
		Honeypots and Honeynets
	Access Control Overview
		Mandatory Access Control (MAC)
		Discretionary Access Control (DAC)
		Rule-Based Access Control (RBAC)
		Role-Based Access Control (RoBAC)
		MAC Filtering
		TCP/IP Filtering
	Tunneling and Encryption
		Point-to-Point Tunneling Protocol (PPTP)
		Layer 2 Tunneling Protocol (L2TP)
		IPSec
	Remote-Access Protocols and Services
		Remote Access Service (RAS)
		SLIP
		PPP
		PPPoE
		Remote-Control Protocols
	Authentication, Authorization, and Accounting (AAA)
		Passwords and Password Policies
		Kerberos Authentication
		Public Key Infrastructure
		RADIUS and TACACS+
	Remote Authentication Protocols
	Physical Security
		Server Room Access
	Secured Versus Unsecured Protocols
	Managing Common Security Threats
		More on Viruses
		More on Worms and Trojan Horses
		Denial of Service and Distributed Denial of Service Attacks
		Other Common Attacks
		An Ounce of Prevention
	Review and Test Yourself
		The Facts
		Key Terms
		Exam Prep Questions
		Answers to Exam Prep Questions
	Need to Know More?
Chapter 10: Network Management Tools and Documentation
	Introduction
	Documentation Management
		Wiring Schematics
		Physical and Logical Network Diagrams
		Baselines
		Policies, Procedures, Configurations, and Regulations
	Monitoring Network Performance
		Common Reasons to Monitor Networks
		Packet Sniffers
		Throughput Testing
		Port Scanners
		Network Performance, Load, and Stress Testing
		Tracking Event Logs
	Networking Tools
		Wire Crimpers, Strippers, and Snips
		Voltage Event Recorder
		Temperature Monitors
		Toner Probes
		Protocol Analyzer
		Media/Cable Testers
		TDR and OTDR
		Multimeter
		Network Qualification Tester
		Butt Set
		Wireless Detection
	Review and Test Yourself
		The Facts
		Key Terms
		Exam Prep Questions
		Answers to Exam Questions
	Need to Know More?
Chapter 11: Troubleshooting and Supporting the Network
	Introduction
	Troubleshooting Steps and Procedures
		Information Gathering: Identify Symptoms and Problems
		Identify the Affected Areas of the Network
		Determine if Anything Has Changed
		Establish the Most Probable Cause
		Determine if Escalation Is Necessary
		Create an Action Plan and Solution Identifying Potential Effects
		Implement and Test the Solution
		Identify the Results and Effects of the Solution
		Document the Solution and the Entire Process
	Troubleshooting the Network
		Troubleshooting Wiring
		Wiring Issues
		Troubleshooting Infrastructure Hardware
		Configuring and Troubleshooting Client Connectivity
		Troubleshooting an Incorrect VLAN
	Topology Errors
		Star Topology
		Ring Topology
		Bus Network Errors
		Mesh Network Errors
	Issue Escalation
	Review and Test Yourself
		The Facts
		Key Terms
		Exam Prep Questions
		Answers to Exam Prep Questions
	Need to Know More?
Practice Exam 1
Answers to Practice Exam 1
	Answers at a Glance
	Answers and Explanations
Practice Exam 2
Answers to Practice Exam 2
	Answers at a Glance
	Answers and Explanations
Glossary
	A
	B
	C
	D
	E
	F
	G
	H
	I
	J
	K
	L
	M
	N
	O
	P
	Q–R
	S
	T
	U
	V
	W
	X–Z
Index
	A
	B
	C
	D
	E
	F
	G
	H
	I
	J - K - L
	M
	N
	O
	P
	Q - R
	S
	T
	U
	V
	W
	X - Y - Z