CompTIA Network+ N10-008 Certification Guide: The ultimate guide to passing the N10-008 exam, 2nd Edition

Cover
Title Page
Copyright
Dedication
Contributors
Table of Contents
Preface
Part 1: Networking Concepts
Chapter 1: Exploring the OSI Model and TCP/IP
	Technical requirements
	The need for networking models
	Exploring the OSI model
		Application layer
		Presentation layer
		Session layer
		Transport layer
		Network layer
		Data Link layer
		Physical layer
	Understanding TCP/IP
	Data encapsulation concepts
		Ethernet header
		IP headers
		TCP header
		UDP headers
	Analyzing network packets
	Summary
	Questions
	Further reading
Chapter 2: Network Topologies and Connections
	Understanding network topologies
		Types of network topologies
	Discovering network types
		Peer-to-peer
		Client-server
		Personal area network
		Local area network
		Wide area network
		Metropolitan area network
		Wireless local area network
		Campus area network
		Storage area network
		Software-defined wide area network
		Multiprotocol label switching
		Multipoint generic routing encapsulation
	Identifying service-related entry points
	Comparing provider links
		Satellite
		Digital Subscriber Line
		Cable
		Leased line
		Metro optical
	Summary
	Questions
	Further reading
Chapter 3: Ethernet Technology and Virtualization
	Technical requirements
	Types of connections
		Copper cables
		Fiber optic cables
		Cable management
	Ethernet standards
	Virtual network concepts
		Hypervisors
		Virtual networking components
		Lab – creating a virtual machine
	Summary
	Questions
	Further reading
Chapter 4: Understanding IPv4 and IPv6 Addressing
	Technical requirements
	The need for IP addressing
		Public versus private address spaces
		Network Address Translation (NAT)
	Exploring the structure of IPv4 and IPv6
		Fundamentals of IPv4
		Fundamentals of IPv6
	Types of IPv4 and IPv6 addresses
		Automatic Private IP Addressing (APIPA)
		Extended unique identifier (EUI-64)
		Unicast
		Multicast
		Broadcast
		Anycast
		Link-local
		Loopback
		Unique local address
		Default gateway
	Delving into IPv6 concepts
		Tunneling
		Dual stack
		Translation
		Router advertisement
		Stateless Address Autoconfiguration (SLAAC)
	Configuring IP addresses
		Windows operating system
		Linux operating system
		Cisco IOS router
	Summary
	Practice questions
	Further reading
Chapter 5: Applied IPv4 Subnetting
	Understanding the purpose of the subnet mask
	Delving into network prefixes and subnet masks
	Determining the network ID
	Understanding the importance of subnetting
	IPv4 subnetting and VLSM
		Step 1 – determining the appropriate IPv4 block
		Step 2 – creating new subnets (subnetworks)
		Step 3 – assigning subnets to each network
		Step 4 – performing Variable-Length Subnet Masking (VLSM)
	Summary
	Questions
	Further reading
Chapter 6: Exploring Network Protocols and Services
	Technical requirements
	Network protocols
		File protocols
		Remote access protocols
		Email protocols
		HTTP and HTTPS
		SQL database protocols
		Lightweight Directory Access Protocol
		Syslog
		Session Initiation Protocol
	Network protocol types
		Internet Control Message Protocol
		TCP
		UDP
	Network services
		Network Time Protocol
		Dynamic Host Configuration Protocol
		DNS
		Simple Network Management Protocol
	Lab – analyzing FTP packets
	Lab – analyzing TFTP packets
	Lab – analyzing SMB packets
	Lab – analyzing Telnet packets
	Lab – reassembling a SIP telephone conversation
	Summary
	Questions
	Further reading
Chapter 7: Data Center Architecture and Cloud Computing
	Understanding network architecture
		Cisco 3-tier architecture
		Cisco 2-tier architecture
	Discovering software-defined networking
		Components of SDN
	Exploring data center architectures
		Branch office versus on-premises
		Spine and leaf
	Delving into storage area networks
		Connection types
	Fundamentals of cloud computing
		Deployment models
		Cloud service models
		Cloud connectivity solutions
	Summary
	Questions
	Further reading
Part 2: Network Implementation
Chapter 8: Networking Devices
	Understanding networking devices
		Hub
		Layer 2 switch
		Layer 3 capable switch
		Bridge
		Router
		Access point
		Wireless LAN controller
		Load balancer
		Proxy server
		Internet modems
		Repeater
		Voice gateways and media converters
	Exploring security appliances
		Firewall
		IPS/IDS
	Types of networked devices
	Summary
	Practice questions
	Further reading
Chapter 9: Routing and Switching Concepts
	Exploring routing concepts
	Understanding routing protocols
		Dynamic routing
		Static routing
	Bandwidth management
	Delving into switching concepts
		PoE
		Spanning-Tree
		Port aggregation
		Neighbor discovery protocol
	Exploring VLAN
		Types of VLANs
	Understanding switch port configurations
		Duplex and speed
		Port mirroring
		Port security
		Auto MDI-X
	Summary
	Questions
	Further reading
Chapter 10: Exploring Wireless Standards and Technologies
	Exploring wireless networking
		Beacons, probes, stations, and SSIDs
		Frequencies, ranges, and channels
		SSID
		Antenna types
		MIMO concepts
	Delving into wireless security
		Wireless encryption standards
		Authentication methods
	Exploring cellular technologies
	Summary
	Questions
	Further reading
Part 3: Network Operations
Chapter 11: Assuring Network Availability
	Network performance metrics
		SNMP
		Network device logs
	Understanding interface issues
		Checking the link state (up/down)
		Checking the speed
		Checking the duplex
		Checking the uptime/downtime
		Interface errors or alerts
	Environmental factors and sensors
	Summary
	Practice questions
	Further reading
Chapter 12: Organizational Documents and Policies
	Plans and procedures
		Change management
		Incident response plans
		The business continuity plan
		Disaster recovery plans
		The system life cycle
		Standard operating procedures
	Hardening and security policies
		Password policies
		Acceptable use policy
		Bring your own device policies
		Remote access policies
		Onboarding and off-boarding policies
		Security policies
		Data loss prevention
	Common documentation
	Common agreements
	Summary
	Practice questions
	Further reading
Chapter 13: High Availability and Disaster Recovery
	High availability concepts
		Diverse paths
		Infrastructure redundancy
		Active-active versus active-passive configurations
		First hop redundancy
	Disaster recovery concepts
		Recovery sites
		Facilities and infrastructure support
		Network device backup/restore
	Summary
	Practice questions
	Further reading
Part 4: Network Security and Troubleshooting
Chapter 14: Network Security Concepts
	Understanding network security
		Confidentiality, integrity, and availability
		Threats, vulnerabilities, and exploits
		Least privilege and RBAC
		Defense in Depth and zero trust
	Exploring authentication methods
		Multi-factor authentication
		Kerberos, single sign-on, and LDAP
	Risk management
		Security risk assessments
	Summary
	Practice questions
	Further reading
Chapter 15: Exploring Cyberattacks and Threats
	Exploring network-based attacks
		Denial of service
		Botnets
		On-path attack
		DNS-based attack
		VLAN hopping
		Rogue DHCP
		Password attacks
	Understanding wireless attacks
		Rogue access points and evil twins
		Deauthentication attacks
	Delving into human and environmental attacks
		Social engineering
		Types of social engineering attacks
	Summary
	Practice questions
	Further reading
Chapter 16: Implementing Network Security
	Network hardening techniques
	Wireless security techniques
		SSID considerations
		Password considerations
		MAC filtering
		Antennas and power levels
		Geofencing and captive portals
		Client isolation
		Wireless authentication protocols
		Installation considerations
	Remote connectivity methods
		Remote access methods
	Importance of physical security
	Summary
	Questions
	Further reading
Chapter 17: Network Troubleshooting
	Network troubleshooting methodology
	Cable connectivity issues
		Link lights/status indicators
		Damaged cables and connectors
		Incorrect TX/RX alignment
		Attenuation
		Crosstalk and Electro-Magnetic Interference (EMI)
		Bad ports/transceivers
		VLAN mismatch
		Sub-optimal performance
	Wireless connectivity issues
		Physical layer issues
		Antenna issues
		Signal power issues
		Interference
		Client configuration issues
	Common network issues
	Hardware-based troubleshooting tools
	Software-based tools and commands
		Packet sniffer
		Port scanner
		Wi-Fi analyzer
		Bandwidth speed tester
		Command-line tools
	Summary
	Practice questions
	Further reading
Chapter 18: Practice Exam
	Questions
	Answers
Assessments
	Chapter 1 – Exploring the OSI Model and TCP/IP
	Chapter 2 – Network Topologies and Connections
	Chapter 3 – Ethernet Technology and Virtualization
	Chapter 4 – Understanding IPv4 and IPv6 Addressing
	Chapter 5 – Applied IPv4 Subnetting
	Chapter 6 – Exploring Network Protocols and Services
	Chapter 7 – Data Center Architecture and Cloud Computing
	Chapter 8 – Network Devices
	Chapter 9 – Routing and Switching Concepts
	Chapter 10 – Exploring Wireless Standards and Technologies
	Chapter 11 – Assuring Network Availability
	Chapter 12 – Organizational Documents and Policies
	Chapter 13 – High Availability and Disaster Recovery
	Chapter 14 – Network Security Concepts
	Chapter 15 – Exploring Cyber Attacks and Threats
	Chapter 16 – Implementing Network Security
	Chapter 17 – Network Troubleshooting
Index
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