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Module 1: Building a Simple Network
Lesson 1: Exploring the Functions of Networking
- What Is a Network?
- Common Physical Components of a Network
- Interpreting a Network Diagram
- Resource-Sharing Functions and Benefits
- Network User Applications
- Impact of User Applications on the Network
- Characteristics of a Network
- Physical vs. Logical Topologies
- Bus Topology
- Star and Extended-Star Topologies
- Ring Topologies
- Mesh and Partial-Mesh Topologies
- Connection to the Internet
Lesson 2: Securing the Network
- Need for Network Security
- Balancing Network Security Requirements
- Adversaries, Adversary Motivations, and Classes of Attack
- Mitigating Common Threats
Lesson 3: Understanding the Host-to-Host Communications Model
- Understanding Host-to-Host Communications
- The OSI Reference Model
- The OSI Model Layers and Their Functions
- Encapsulation and De-Encapsulation
- Peer-to-Peer Communication
- TCP/IP Suite
Lesson 4: Understanding the TCP/IP Internet Layer
- Internet Protocol
- IP Addressing
- IP Address Fields
- IP Address Classes
- Reserved IP Addresses
- Public and Private IP Addresses
- Dynamic Host Configuration Protocol (DHCP)
- Domain Name System
- Using Common Host Tools to Determine the IP Address of a Host
Lesson 5 Understanding the TCP/IP Transport Layer
- Transport Layer Functions
- Reliable vs. Best-Effort
- UDP
- TCP
- TCP/IP Applications
- Mapping Layer 3 to Layer 4
- Mapping Layer 4 to Applications
- Establishing a Connection with a Peer System
- Flow Control
- TCP Acknowledgment
- Windowing
- TCP Sequence Number and Acknowledgment Numbers
Lesson 6: Exploring the Packet Delivery Process
- Layer 1 Devices and Their Function
- Layer 2 Devices and Their Function
- Layer 2 Addressing
- Layer 3 Devices and Their Function
- Layer 3 Addressing
- Mapping Layer 2 Addressing to Layer 3 Addressing
- ARP Table
- Host-to-Host Packet Delivery
- Function of the Default Gateway
- Using Common Host Tools to Determine the Path Between Two Hosts Across a Network
Lesson 7: Understanding Ethernet
- Definition of a LAN
- Components of a LAN
- Functions of a LAN
- How Big Is a LAN?
- Ethernet
- Ethernet LAN Standards
- The Role of CSMA/CD in Ethernet
- Ethernet Frames
- Ethernet Frame Addressing
- Ethernet Addresses
- MAC Addresses and Binary-Hexadecimal Numbers
Lesson 8: Connecting to an Ethernet LAN
- Ethernet Network Interface Cards
- Ethernet Media and Connection Requirements
- Connection Media
- UTP Implementation
Module 2: Ethernet LANs
Lesson 1: Understanding the Challenges of Shared LANs
- Ethernet LAN Segments
- Extending a LAN Segment
- Collisions
- Collision Domains
Lesson 2: Solving Network Challenges with Switched LAN Technology
- Typical Causes of Network Congestion
- Bridges—Early Solutions to Network Congestion
- Switches
- Switches vs. Bridges
- How Switches Segment the Ethernet Network
- Switching in Action
- LANs Using Switched Technology
Lesson 3: Exploring the Packet Delivery Process
- Layer 2 Addressing
- Layer 3 Addressing
- Host-to-Host Packet Delivery
Lesson 4: Operating Cisco IOS Software
- Cisco IOS Software Features and Functions
- Configuring Network Devices
- External Configuration Sources
- Cisco IOS Command-Line Interface Functions
- Entering the EXEC Modes
- Keyboard Help in the CLI
- Enhanced Editing Commands
- Command History
Lesson 5: Starting a Switch
- Physical Startup of the Catalyst Switch
- Switch LED Indicators
- Viewing Initial Bootup Output from the Switch
- Logging In to the Switch
- Configuring a Switch from the Command Line
- Showing the Switch Initial Startup Status
- MAC Address Table Management
Lesson 6: Understanding Switch Security
- Physical and Environmental Threats
- Configuring Password Security
- Configuring the Login Banner
- Telnet vs. SSH Access
- Port Security Configuration
- Securing Unused Ports
Lesson 7: Maximizing the Benefits of Switching
- Microsegmentation
- Duplex Communication
- The Need for Different Media Rates in an Enterprise Network
- Physical Redundancy in an Ethernet LAN
- Loop Resolution with Spanning Tree Protocol
Lesson 8: Troubleshooting Switch Issues
- Using a Layered Approach
- Identifying and Resolving Media Issues
- Identifying and Resolving Common Access Port Issues
- Identifying and Resolving Common Configuration Issues
Module 3: Wireless LANs
Lesson 1: Exploring Wireless Networking
- The Business Case for WLAN Service
- Differences Between WLANs and LANs
- RF Transmission
- Organizations That Define WLANs
- ITU-R Local FCC Wireless
- 802.11 Standards Comparison
- Wi-Fi Certification
Lesson 2: Understanding WLAN Security
- WLAN Security Threats
- Mitigating Security Threats
- Evolution of WLAN Security
- Wireless Client Association
- How 802.1X Works on WLANs
- WPA and WPA2 Modes
Lesson 3: Implementing a WLAN
- 802.11 Topology Building Blocks
- BSA Wireless Topology
- Wireless Topology Data Rates
- Access Point Configuration
- Steps to Implement a Wireless Network
- Wireless Clients
- Wireless Troubleshooting
Module 4: LAN Connections
Lesson 1: Exploring the Functions of Routing
- Routers
- Path Determination
- Routing Tables
- Static, Dynamic, Directly Connected, and Default Routes
- Dynamic Routing Protocols
Lesson 2: Understanding Binary Basics
- Decimal and Binary Systems
- Powers of 2
- Decimal-to-Binary Conversion
- Binary-to-Decimal Conversion
Lesson 3: Constructing a Network Addressing Scheme
- Subnetworks
- Computing Usable Subnetworks and Hosts
- How End Systems Use Subnet Masks
- How Routers Use Subnet Masks
- Mechanics of Subnet Mask Operation
- Applying Subnet Mask Operation
- Summary
Lesson 4: Starting a Cisco Router
- Initial Startup of a Cisco Router
- Initial Setup of a Cisco Router
- Logging In to the Cisco Router
- Showing the Router Initial Startup Status
Lesson 5: Configuring a Cisco Router
- Cisco Router Configuration Modes
- Configuring a Cisco Router from the CLI
- Configuring Cisco Router Interfaces
- Configuring the Cisco Router IP Address
- Verifying the Interface Configuration
Lesson 6: Exploring the Packet Delivery Process
- Layer 2 Addressing
- Layer 3 Addressing
- Host-to-Host Packet Delivery
- Using the show ip arp Command
- Using Common Cisco IOS Tools
Lesson 7: Understanding Cisco Router Security
- Physical and Environmental Threats
- Configuring Password Security
- Configuring the Login Banner
- Telnet and SSH Access
Lesson 8: Using Cisco SDM
- Cisco SDM Overview
- Cisco SDM User Interface
- Cisco SDM Wizards
Lesson 9: Using a Cisco Router as a DHCP Server
- Understanding DHCP
- Using a Cisco Router as a DHCP Server
- Using Cisco SDM to Enable the DHCP Server Function
- Monitoring DHCP Server Functions
Lesson 10: Accessing Remote Devices
- Establishing a Telnet or SSH Connection
- Suspending and Resuming a Telnet Session
- Closing a Telnet Session
- Alternate Connectivity Tests
Module 5: WAN Connections
Lesson 1: Understanding WAN Technologies
- What Is a WAN?
- Why Are WANs Necessary?
- How Is a WAN Different from a LAN?
- WAN Access and the OSI Reference Model
- WAN Devices
- WAN Cabling
- The Role of Routers in WANs
- WAN Data-Link Protocols
- WAN Communication Link Options
Lesson 2: Enabling the Internet Connection
- Packet-Switched Communication Links
- Digital Subscriber Line
- Cable
- Global Internet: The Largest WAN
- Obtaining an Interface Address from a DHCP Server
- Introducing NAT and PAT
- Translating Inside Source Addresses
- Configuring the DHCP Client and PAT
- Verifying the DHCP Client Configuration
- Verifying the NAT and PAT Configuration
Lesson 3: Enabling Static Routing
- Routing Overview
- Static and Dynamic Route Comparison
- Static Route Configuration
- Default Route Forwarding Configuration
- Static Route Configuration Verification
Lesson 4: Configuring Serial Encapsulation
- Circuit-Switched Communication Links
- Public Switched Telephone Network
- Point-to-Point Communication Links
- High-Level Data Link Control Protocol
- Configuring HDLC Encapsulation
- Point-to-Point Protocol
- Serial Encapsulation Configuration Verification
- Frame Relay
- ATM and Cell Switching
Lesson 5: Enabling RIP
- Dynamic Routing Protocol Overview
- Classless vs. Classful Routing
- Distance Vector Route Selection
- RIP Features
- RIPv1 and RIPv2 Comparison
- Dynamic Routing Configuration Tasks
- RIP Configuration
- RIP Configuration Verification
- RIP Configuration Troubleshooting
Module 6: Network Environment Management
Lesson 1: Discovering Neighbors on the Network
- Cisco Discovery Protocol
- Information Obtained with Cisco Discovery Protocol
- Implementation of Cisco Discovery Protocol
- Using the show cdp neighbors Command
- Monitoring and Maintaining Cisco Discovery Protocol
- Creating a Network Map of the Environment
Lesson 2: Managing Cisco Router Startup and Configuration
- Stages of the Router Power-On Boot Sequence
- Internal Router Components
- How a Device Locates and Loads Cisco IOS Image and Configuration Files
- Configuration Register
Lesson 3: Managing Cisco Devices
- Cisco IOS File System and Devices
- Managing Cisco IOS Images
- Managing Device Configuration Files
- Cisco IOS copy Command
- Using show and debug Commands on Cisco Devices
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