Introduction p. 1 Self-Assessment p. 9 Networking Fundamentals p. 17 Introduction p. 18 Components and Terms p. 18 Topologies p. 18 LAN Technologies p. 19 Ethernet p. 19 WAN Technologies p. 21 Dedicated Leased Line Connections p. 22 Circuit-Switched Connections p. 22 Packet-Switched Connections p. 22 Cell-Switched Connections p. 23 Wireless Networks p. 23 Other Network Technologies p. 23 Exam Prep Questions p. 25 Answers to Exam Prep Questions p. 27 Network Models p. 29 Introduction p. 30 Cisco Hierarchical Model p. 30 Access Layer p. 31 Distribution Layer p. 31 Core Layer p. 31 Advantages of the Three-Layer Model p. 32 OSI Model p. 32 The Application Layer p. 33 The Presentation Layer p. 34 The Session Layer p. 34 The Transport Layer p. 35 The Network Layer p. 41 The Data Link Layer p. 43 The Physical Layer p. 44 TCP/IP Model p. 46 Exam Prep Questions p. 48 Answers to Exam Prep Questions p. 50 Concepts in IP Addressing p. 53 Introduction p. 54 Binary p. 54 Hexadecimal p. 56 Conversion Between Binary, Hex, and Decimal p. 57 Decimal to Hexadecimal Conversions p. 58
Hexadecimal to Decimal Conversions p. 58 IP Address Components p. 59 Address Class p. 59 Default Subnet Mask p. 59 The Network Field p. 60 The Host Field p. 61 Non-Default Masks p. 61 The Subnet Field p. 61 Subnetting p. 62 Address Class and Default Mask p. 62 The Increment p. 63 Number of Hosts p. 66 The Broadcast ID p. 67 Number of Subnets p. 69 Working with Subnetting Questions p. 71 The Subnetting Chart p. 72 Exam Prep Questions p. 75 Answers to Exam Prep Questions p. 80 Working with Cisco Equipment p. 83 Introduction p. 84 Products p. 84 External Connections p. 84 Console p. 84 Aux Port p. 86 Ethernet Port p. 86 Serial Port p. 87 Other Connections p. 88 Connecting and Configuring Cisco Devices p. 88 Device Memory Locations p. 89 IOS Startup Process p. 89 Setup Mode p. 91 Configuration Register p. 91 Password Recovery p. 91 Command Line Modes p. 93 Command Shortcuts p. 94 Context-Sensitive Help p. 95 Basic Switch Configuration p. 96 Basic Router Configuration p. 97 Securing Routers and Switches p. 98 Configuring SSH Access to Your Router p. 100 Exam Prep Questions p. 102
Answers to Exam Prep Questions p. 104 Managing Your Router p. 107 Introduction p. 108 IOS Naming Conventions p. 108 Back Up and Restore IOS p. 110 Backup and Restore Configurations p. 111 Troubleshooting and Remote Management p. 112 Telnet p. 112 Secure Shell (SSH) p. 114 CDP p. 115 ICMP p. 116 Exam Prep Questions p. 118 Answers to Exam Prep Questions p. 120 Basic Catalyst Switch Operations and Configuration p. 123 Introduction p. 124 Bridging and Switching p. 124 Functions of Bridges and Switches p. 124 The Differences Between Switches and Bridges p. 128 Switching Modes p. 130 STP p. 133 Exam Prep Questions p. 135 Answers to Exam Prep Questions p. 137 Introduction to Wide-Area Networks p. 139 Introduction p. 140 Encapsulation Types p. 140 Cisco HDLC p. 141 PPP p. 142 Components p. 142 Configuration p. 144 Verification and Troubleshooting p. 146 Frame Relay p. 146 Concepts and Terminology p. 146 The Split Horizon Problem p. 150 Configuration p. 151 Verification and Troubleshooting p. 154 Network Address Translation p. 155 NAT Terminology p. 156 Applications, Advantages, and Disadvantages of NAT p. 157 Static NAT p. 159 Dynamic NAT p. 161 PAT p. 162
Exam Prep Questions p. 166 Answers to Exam Prep Questions p. 167 Wireless LANs p. 169 Introduction p. 170 WLAN Stands p. 170 Unlicensed Radio Bands p. 170 802.11 p. 171 802.11a p. 172 802.11b p. 173 802.11g p. 174 802.11n p. 174 WLAN Operational Modes p. 175 Ad Hoc Mode p. 175 Infrastructure Mode p. 175 Basic Service Set and Extended Service Set p. 176 BSS p. 176 ESS p. 176 WLAN Security p. 177 WLAN Security Threats p. 177 WLAN Security Methods p. 178 WLAN Security Standards p. 179 Basic WLAN Configuration Steps p. 181 Exam Prep Questions p. 183 Answers to Exam Prep Questions p. 185 Basic Network Security p. 187 Introduction p. 188 The Need for Security p. 188 Mitigation Steps p. 189 Reconnaissance Attacks p. 190 Access Attacks p. 191 Denial of Service Attacks p. 192 Common Security Appliances p. 193 Best Practices p. 195 Exam Prep Questions p. 196 Answers to Exam Prep Questions p. 198 Basic Routing p. 201 Introduction p. 202 Static Routes p. 202 Default Routes p. 203 Dynamic Routes p. 204 RIP p. 211
Characteristics of RIP p. 211 Implementing RIP p. 212 Verifying and Troubleshooting RIP p. 214 Exam Prep Questions p. 218 Answers to Exam Prep Questions p. 223 Small-Office Internet Connection p. 225 Introduction p. 226 Basic Configuration Using the Cisco Router and Security Device Manager (SDM) p. 226 Setting Hostname, Domain, and Login Credentials p. 230 Configuring IP Addressing Using SDM Express p. 230 Configuring the DHCP Server Using SDM Express p. 232 Setting Up the Wan Interface in SDM Express p. 233 Configuring NAT Using SDM Express p. 234 Firewall Option p. 235 Security Configuration Checklist p. 236 SDM Express Configuration Summary p. 237 Configuring a Default Route in SDM p. 242 Testing Connectivity Using the SDM Interface p. 243 Basic Switch Configuration Using the CLI p. 246 Securing the Switch p. 246 Configuring a Management IP and Default Gateway p. 247 Exam Prep Questions p. 250 Answers to Exam Prep Questions p. 252 Practice Exam #1 p. 255 Practice Exam #1 Answer Key p. 275 Practice Exam #2 p. 289 Practice Exam #2 Answer Key p. 307 What's on the CD-ROM p. 319 Need to Know More? p. 323 Glossary p. 327 Index p. 343 Table of Contents provided by Blackwell's Book Services and R.R. Bowker. Used with permission.