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Free CISCO CCNA Study Guide

Chapter 1: Introduction to TCP/IP Networking
Perspectives on Networking
TCP/IP Networking Model
History Leading to TCP/IP
Overview of the TCP/IP Networking Model
TCP/IP Application Layer
TCP/IP Transport Layer
TCP/IP Network Layer
TCP/IP Link Layer (Data Link Plus Physical)
TCP/IP Model and Terminology
OSI Networking Model
Comparing OSI and TCP/IP
Describing Protocols by Referencing the OSI Layers
OSI Layers and Their Functions
OSI Layering Concepts and Benefits
OSI Encapsulation Terminology
Chapter 2: Fundamentals of Ethernet LANs
Typical SOHO LANs
Typical Enterprise LANs
The Variety of Ethernet Physical Layer Standards
Consistent Behavior over All Links Using the Ethernet Data Link Layer
Building Physical Ethernet Networks with UTP
Transmitting Data Using Twisted Pairs
Breaking Down a UTP Ethernet Link
UTP Cabling Pinouts for 10BASE-T and 100BASE-T
UTP Cabling Pinouts for 1000BASE-T
Ethernet Data-Link Protocols
Sending Ethernet Frames with Switches and Hubs
Chapter 3: Fundamentals of WANs
Leased-Line WANs
Positioning Leased Lines with LANs and Routers
Physical Details of Leased Lines
Data-Link Details of Leased Lines
How Routers Use a WAN Data Link
Ethernet as a WAN Technology
Ethernet WANs that Create a Layer 2 Service
How Routers Route IP Packets Using Ethernet Emulation
The Internet as a Large WAN
Internet Access (WAN) Links
Digital Subscriber Line
Cable Internet
Chapter 4: Fundamentals of IPv4 Addressing and Routing
Network Layer Routing (Forwarding) Logic
How Network Layer Routing Uses LANs and WANs
IP Addressing and How Addressing Helps IP Routing
Routing Protocols
Rules for IP Addresses
Rules for Grouping IP Addresses
Class A B and C IP Networks
The Actual Class A B and C IP Networks
IP Subnetting
IPv4 Host Routing
Router Forwarding Decisions and the IP Routing Table
IPv4 Routing Protocols
Using Names and the Domain Name System
The Address Resolution Protocol
ICMP Echo and the ping Command
Chapter 5: Fundamentals of TCP/IP Transport and Applications
TCP/IP Layer 4 Protocols: TCP and UDP
Transmission Control Protocol
Multiplexing Using TCP Port Numbers
Popular TCP/IP Applications
Connection Establishment and Termination
Error Recovery and Reliability
Flow Control Using Windowing
User Datagram Protocol
TCP/IP Applications
Uniform Resource Identifiers
Finding the Web Server Using DNS
Transferring Files with HTTP
How the Receiving Host Identifies the Correct Receiving Application
Chapter 6: Using the Command-Line Interface
Cisco Catalyst Switches
Accessing the Cisco IOS CLI
Cabling the Console Connection
Accessing the CLI with Telnet and SSH
User and Enable (Privileged) Modes
Password Security for CLI Access from the Console
CLI Help Features
The debug and show Commands
Configuring Cisco IOS Software
Configuration Submodes and Contexts
Storing Switch Configuration Files
Copying and Erasing Configuration Files
Chapter 7: Analyzing Ethernet LAN Switching
LAN Switching Concepts
Overview of Switching Logic
Forwarding Known Unicast Frames
Learning MAC Addresses
Flooding Unknown Unicast and Broadcast Frames
Avoiding Loops Using Spanning Tree Protocol
LAN Switching Summary
Verifying and Analyzing Ethernet Switching
Demonstrating MAC Learning
Switch Interfaces
Finding Entries in the MAC Address Table
Managing the MAC Address Table (Aging, Clearing)
MAC Address Tables with Multiple Switches
Chapter 8: Configuring Basic Switch Management
Chapter 9: Configuring Switch Interfaces

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