CCENT-CCNA：ICND1 100-105 Certification Guide
Bekim Dauti更新时间：2021-08-27 18:22:47
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Title Page
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CCENT/CCNA: ICND1 100-105 Certification Guide
Dedication
Packt Upsell
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PacktPub.com
Contributors
About the author
About the reviewer
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Preface
Who this book is for
What this book covers
To get the most out of this book
Download the color images
Conventions used
Get in touch
Reviews
Introduction to Computer Networks
From ARPANET to internet
What is a computer network?
Requirements for designing a computer network
Types of computer networks
Personal area network (PAN)
Local area network (LAN)
Metropolitan area network (MAN)
Wide area network (WAN)
Intranet
Extranet
Computer network topologies
Physical topology
Bus
Ring
Star
Extended star
Hierarchical
Mesh
Logical topology
Computer network components
Clients
Servers
Hosts and nodes
Network interface
Peripheral devices
Applications and shared data
Hubs and switches
Routers
Infrastructure components
Firewall
Wireless access point
Wireless access controller
Computer network architectures
Peer-to-peer networking (P2P)
Client/server networking
Network operating system (NOS)
Windows
Linux
macOS X Server
Network medium
Twisted pairs
Coaxial
Fibre optic
Infrared and Bluetooth
Radio waves
Satellite
Converged networks
Growing complexity of networks
Elements of converged networks
Access distribution and core layers
Network trends
Summary
Questions
Communication in Computer Networks
How do computers communicate?
Message encoding
Message formatting and encapsulation
Message size
Message timing
Message delivery types
Unicast transmission
Multicast transmission
Broadcast transmission
Types of communication channels
Simplex
Half-duplex
Full-duplex
Communication protocols
Characteristics of communication protocols
Connection-oriented protocols
Connectionless protocols
Circuit switching versus packet switching
Well-known communication protocols
OSI and TCP/IP model overview
TCP/IP protocol model
OSI reference model
OSI layers and their protocols
Physical layer protocols
Data link layer protocols
Network layer protocols
Transport layer protocols
Session layer protocols
Presentation layer protocols
Application layer protocols
Ethernet communication technology
Ethernet history
Ethernet protocols
Ethernet frame
Ethernet MAC addresses
Ethernet's CSMA CD vs. Ethernet's CSMA CA
The IP addresses and subnets
IPv4 network addresses
Public IP addresses
Private IP addresses
Loopback IP address
Automatic Private IP Addressing (APIPA)
Unicast multicast and broadcast addresses
Class A addresses
Class B addresses
Class C addresses
Class D addresses
Class E addresses
IPv6 network addresses
Global unicast addresses
Link-local addresses
Unique local addresses
Loopback address
"This host this network" address
Multicast addresses
Anycast
Autoconfiguration
Subnetting
Classful subnetting
Classless subnetting
IPv6 subnetting
Summary
Questions
Introduction to Switching
What is switch?
Switch essentials
MAC address table
MAC learning and aging
Frame switching
Frame flooding
Switching general concepts
Ingress and egress ports
Source and destination MAC addresses
Unicast MAC address
Multicast MAC address
Broadcast MAC address
Switched networks
The role of switched networks
Features of the switch
Fixed configuration switches
Modular configuration switches
Stackable configuration switches
Frame forwarding methods
Store-and-forward switching
Cut-through switching
Fast-forward switching
Fragment-free switching
Switching domains
Collision domains
Broadcast domains
Network congestion
Switch port settings
Duplex and speed settings
Auto-MDIX
Overview of VLANs
VLAN segmentation
VLANs in a multiswitched environment
VLAN trunks
Inter-VLAN operation
Ethernet's frame overview
Ethernet frame encapsulation
Ethernet frame fields
Ethernet frame processing
Switch security
Secure remote access
Telnet
SSH
Port security operation
Summary
Questions
Setting Up the Switch
Basic switch configuration
Configuration with initial settings
Boot sequence
LED indicators
Connecting to a switch and running initial configuration
Configuring basic management access
Configuring ports
Configuring VLANs
Configuring VLAN trunks
Configuring legacy inter-VLAN routing
Scenario – Router with multiple interfaces
Verifying VLAN information on a switch
Configuring router-on-a-stick inter-VLAN routing
Scenario – Router with a single interface
Verifying VLAN information on a switch
Configuring remote access
Configuring Telnet
Configuring SSH
Configuring switchport security
Summary
Questions
Introduction to Routing
Routing concepts
Understanding host routing
Host forwarding decisions
Default gateway
Host routing tables
Routing operations
Switching packets
Router switching functions
Sending packets
Packet routing
Forward to next-hop
Reaching the destination
Path determination
Routing decision
Selecting the best path
Network Load Balancing (NLB)
Administrative distance (AD)
What is a router?
A router is a computer
Router's CPU and OS
Anatomy of a router
Connecting to a router
LAN and WAN interfaces
Boot up the router
Router's boot up process
Bootset files
Router routing tables
Understanding packet forwarding
IPv4 routing table
Directly connected routing table entries
Remote network routing table entries
Next-hop IP address
Routing types
Static routing
Static route applications
Dynamic routing
Dynamic routing protocols
Routing table terms
Summary
Questions
Setting up the Router
Connecting the router to a PC and turning it on
Router LED indicators
Console access
Turning on the router
Show version output
Router's initial configuration
Configuring basic router settings
Configuring IPv4 and IPv6 addresses on router interfaces
Configuring static routes and default static routes
Configuring IPv4 static routes and default static routes
Configuring IPv6 static routes and default static routes
Configuring Routing Information Protocol (RIP)
InterVLAN configuration
Router-on-a-stick interVLAN configuration
Summary
Questions
Networking Services and Maintenance
Dynamic Host Configuration Protocol overview
Assigning IPv4 addresses dynamically
Configuring DHCPv4
Assigning IPv6 addresses dynamically
Configuring stateless DHCPv6
Configuring Stateful DHCPv6
Network Address Translator overview
Configuring static NAT
Configuring dynamic NAT
Configuring PAT
Configuring port forwarding
NAT and IPv6
Network Time Protocol overview
Configuring and verifying NTP
Cisco Discovery Protocol and Link-Layer Discovery Protocol overview
Device discovery with CDP
Device discovery with LLDP
System logging overview
Configuring syslog
Device maintenance
Router and switch file maintenance
Router file systems
Switch file systems
Backing up and restoring text files
Backing up and restoring to/from TFTP
Using USB ports on a Cisco router
Backing up and restoring to/from a USB flash drive
Password recovery using ROMMON
IOS system files
IOS 15.0 system image packaging
IOS image filename
IOS image management
TFTP servers as a backup location
Steps to back up an IOS image to a TFTP server
Copying an IOS image to a device
The boot system command
Software licensing
Licensing overview
Licensing process
License verification and management
License verification
Activating an evaluation right-to-use license
Backing up the license
Uninstalling the license
Traffic management
Summary
Questions
Network Troubleshooting
Troubleshooting methodologies
Basic approaches
Resolve or escalate?
Verifying and monitoring solutions
Troubleshooting scenarios
IP addressing issues on networking devices
IP addressing issues on end devices
Default gateway issues
Troubleshooting DNS issues
Troubleshooting cables and interfaces
Cable problems
Duplex operation
Duplex mismatch
Switch troubleshooting
Recovering from a system crash
Network access layer issues
Troubleshooting network access layer issues
Ports in error-disabled state
Router troubleshooting
Verifying IPv4 interface settings
Verifying IPv6 interface settings
The show history command
Troubleshooting a missing route
Solving a connectivity problem
Troubleshooting VLANs
IP addressing issues with VLANs
Troubleshooting Access Control Lists
Processing packets with ACLs
Common IPv4 standard ACL errors
Troubleshooting DHCP
Troubleshooting DHCPv4
Troubleshooting DHCPv6
Troubleshooting NAT
The show ip NAT commands
The debug ip NAT command
Basic network performance
The ping command
The traceroute and tracert commands
The show commands
Command syntax
The debug command
Network security
Security threats and vulnerabilities
Network attacks
Network attack mitigation
Device security
Summary
Questions
Studying and Preparing for ICND 1 (100-105) Exam
What is the ICND 1 (100-105) exam?
What are the ICND 1 (100-105) exam topics?
Topic 1.0–Network fundamentals (20%)
Topic 2.0 - LAN switching fundamentals (26%)
Topic 3.0 - Routing fundamentals (25%)
Topic 4.0 - Infrastructure services (15%)
Topic 5.0 – Infrastructure maintenance (14%)
What to expect in the ICND 1 (100-105) exam
How to prepare for the ICDN 1 (100-105) exam
How to register for the ICND 1 (100-105) exam?
On the day of the ICND 1 (100-105) exam
Post-ICND 1 (100-105) exam certification path
Appendix A: Answers to Chapter Questions
Chapter 1–Answers
Chapter 2—Answers
Chapter 3—Answers
Chapter 4—Answers
Chapter 5—Answers
Chapter 6—Answers
Chapter 7—Answers
Chapter 8 — Answers
Appendix B: Cisco Device Icons
Cisco network topology icons
Appendix C: Numbering Systems and Conversions
Binary numbering system
Decimal to binary conversion
Binary to decimal conversion
Octal numbering system
Decimal to octal conversion
Hexadecimal numbering system
Decimal to hexadecimal conversion
Appendix D: Boolean Algebra
AND operation
OR operation
NOT operation
Appendix E: Subnetting
Example—Class A subnetting
Example—Class B subnetting
Example—Class C subnetting
Appendix F: Cisco Packet Tracer
Downloading Packet Tracer
Installing Packet Tracer
Appendix G: Graphical Network Simulator-3 (GNS3)
Downloading GNS3
Installing GNS3
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更新时间：2021-08-27 18:22:47