CCENT Practice and Study Guide

Completion Exercise 41 Identify the Ethernet Frame Attributes: Matching 42 Comparing Decimal, Binary, and Hexadecimal Digits 43 Address Resolution Protocol 43 Completion Exercise 43 Identify the MAC and IP Addresses 44 LAN Switches 45 Building the MAC Address Table 45 Switching Concepts Completion Exercise 46 Comparing Switch Forwarding Methods 47 Forward the Frame 47 Layer 3 Switching Concepts Completion Exercise 50 Layer 3 Switch Configuration 51 CHAPTER 6 Network Layer 53 Network Layer Protocols 53 The Processes of the Network Layer 53 Characteristics of the IP Protocol 53 Fields of the IPv4 Packet: Matching 55 Fields of the IPv6 Packet: Matching 55 Routing 56 How a Host Routes Packets Completion Exercise 56 Routing Table Entry: Matching 58 Routers 58 Identify Router Components 58 Router Boot Process Exercise 59 Interpreting the show version Command Exercise 60 Configuring a Cisco Router 60 Basic Router Configuration Exercise 60 Applying a Basic Configuration 62 Verifying Basic Router Configuration 63 CHAPTER 7 Transport Layer 65 Transport Layer Protocols 65 Transportation of Data Completion Exercise 65 Introducing TCP and UDP 66 TCP and UDP 66 TCP Communication 67 UDP Communication 69 TCP or UDP, That Is the Question 69 CHAPTER 8 IP Addressing 71 IPv4 Network Addresses 71 IPv4 Address Structure 71 IPv4 Subnet Mask 72 The Last Nonzero Octet 73 ANDing to Determine the Network Address 73 IPv4 Unicast, Broadcast, and Multicast 74 Types of IPv4 Addresses 74 IPv6 Network Addresses 75 Representing IPv6 Addresses 76 Identify IPv6 Address Types 77 IPv6 Unicast Addresses 80 The 3-1-4 Rule 80 Static Configuration of Global Unicast Addressing 81 Dynamic Configuration of Global Unicast Addressing 81 IPv6 Multicast Addresses 82 Connectivity Verification 83 ICMP Message Types 83 Testing the Path 83 CHAPTER 9 Subnetting IP Networks 85 Subnetting an IPv4 Network 85 Subnetting in Four Steps 85 Subnetting Example 85 Determine How Many Bits to Borrow 85 Determine the New Subnet Mask 86 Determine the Subnet Multiplier 86 List the Subnets, Host Ranges, and Broadcast Addresses 87 Subnetting Scenario 1 87 Subnetting Scenario 2 87 Subnetting Scenario 3 88 VLSM Addressing Schemes 88 VLSM Review 89 VLSM Addressing Design Exercises 90 Exercise 1 91 Exercise 2 92 Exercise 3 93 Exercise 4 93 Design Considerations for IPv6 94 Subnetting an IPv6 Network 95 IPv6 Subnetting Practice 95 IPv6 Subnetting Scenario 1 95 IPv6 Subnetting Scenario 2 96 IPv6 Subnetting Scenario 3 96 CHAPTER 10 Application Layer 97 Application Layer Protocols 97 OSI and TCP/IP Model Comparison 97 Application and Presentation Protocols and Standards 98 How Application Protocols Interact with End-User Applications 98 Well-Known Application Layer Protocols and Services 99 Web and Mail Services 99 IP Addressing Services 100 File Sharing Services 102 The Message Heard Around the World 103 CHAPTER 11 It's a Network 105 Create and Grow 105 Devices in a Small Network 105 Protocols in a Small Network 106 Growing to Larger Networks 107 Keeping the Network Safe 107 Network Device Security Measures 107 Vulnerabilities and Network Attacks 108 Mitigating Network Attacks 109 Securing Devices 110 Basic Network Performance 110 Using the ping Command 111 Tracing a Route 111 show Commands 112 Managing IOS Configuration Files 114 Integrated Routing Services 116 Part II: Routing and Switching Essentials CHAPTER 12 Introduction to Switched Networks 117 LAN Design 117 LAN Design Principles 117 Selecting Switch Hardware 119 The Switched Environment 120 Frame Forwarding Methods and Terminology 120 Building the MAC Address Table 120 Collision and Broadcast Domains 122 CHAPTER 13 Basic Switching Concepts and Configuration 125 Basic Switch Configuration 125 Switch Boot Sequence 125 Half-Duplex, Full-Duplex, and Auto-MDIX 125 Configure a Switch with Initial Settings 126 Basic Configuration Tasks 127 Applying a Basic Configuration 127 Verifying Basic Switch Configuration 129 Switch Security: Management and Implementation 129 Configuring SSH 129 Common Security Attacks 131 Configuring Port Security 132 Configuring NTP 134 NTP Commands 134 CHAPTER 14 VLANs 135 VLAN Segmentation 135 Overview of VLANs 135 VLANs in a Multiswitched Environment 136 VLAN Implementations 137 VLAN Configuration Exercise 137 Practice VLAN Configuration 141 VLAN Trunk Configuration Exercise 141 Practice Trunk Configuration 142 Dynamic Trunking Protocol 143 Troubleshoot VLANs and Trunks 144 VLAN Security and Design 146 Switch Spoofing Attack 146 Double-Tagging Attack 147 PVLAN Edge 147 CHAPTER 15 Routing Concepts 149 Initial Configuration of a Router 149 Functions of a Router 149 External Router Features 152 Topology and Addressing Documentation 154 Configure and Verify Dual-Stack IPv4 and IPv6 Addressing 156 Routing Decisions 161 Path Determination 162 Concept of Administrative Distance Exercise 164 Switching Packets Between Networks 164 Router Operation 165 Analyze the Routing Table 165 Directly Connected, Static, and Dynamic Routes 167 CHAPTER 16 Inter-VLAN Routing 171 Inter-VLAN Routing Configuration 171 Types of Inter-VLAN Routing 171 Configuring Inter-VLAN Routing 172 Troubleshoot Inter-VLAN Routing 174 Inter-VLAN Troubleshooting Scenarios 174 Layer 3 Switching 176 Layer 3 Switching Operation 176 Configuring Static Routes on a Catalyst 2960 177 Layer 3 Switching Troubleshooting Scenarios 179 CHAPTER 17 Static Routing 183 Static Routing Implementation 183 Static Routing Overview 183 Identify Types of Static Routes 184 Configure Static and Default Routes 185 Configuring IPv4 Static and Default Routes 185 B1 and B2 Routing Strategy 186 Configuring IPv6 Static and Default Routes 187 B1 and B2 Routing Strategy 187 Review of CIDR and VLSM 188 Classful Addressing 189 CIDR and Route Summarization 189 Summary Route Calculation Scenario 1 190 Summary Route Calculation Scenario 2 191 Summary Route Calculation Scenario 3 191 Configure Summary and Floating Static Routes 191 Configure IPv4 Summary Routes 192 Configure IPv6 Summary Routes 192 Configure Floating Static Routes 194 Troubleshoot Static and Default Route Issues 195 IPv4 Static and Default Route Implementation 195 IPv6 Static and Default Route Implementation 195 CHAPTER 18 Routing Dynamically 197 Dynamic Routing Protocols 197 Dynamic Routing Protocol Operation 197 Compare Static and Dynamic Routing 197 From Cold Start to Convergence 198 Dynamic Routing Protocols Classification Chart 200 Routing Protocols Characteristics 201 Comparing Routing Protocol Characteristics 202 Distance Vector Dynamic Routing 202 Distance Vector Operation and Terminology 202 Comparing RIP and EIGRP 204 RIP and RIPng Routing 204 Configuring RIPv2 204 Configuring RIPng 206 Link-State Dynamic Routing 208 Link-State Routing Protocol Operation 208 Building the Link-State Database 210 Using Link-State Routing Protocols 214 The Routing Table 214 Identifying Elements of the Routing Table 214 Dynamically Learned IPv4 Routes 215 The IPv4 Route Lookup Process 217 Routing Table Lookup Chart 217 Routing Table Lookup Exercise 218 Analyze an IPv6 Routing Table 219 CHAPTER 19 Single-Area OSPF 221 Characteristics of OSPF 221 OSPF Terminology 222 OSPF Concepts 223 OSPF Operation 224 Configuring Single-Area OSPFv2 227 The Router ID 228 Single-Area OSPFv2 Basic Configuration Scenario 229 Adjusting OSPF Cost 231 The Reference Bandwidth 231 The Default Interface Bandwidth 232 Modifying the OSPF Cost Metric 232 Verify the OSPF Configuration 233 Configure Single-Area OSPFv3 233 Comparing OSPFv2 and OSPFv3 233 Configuring OSPFv3 234 Verifying OSPFv3 236 CHAPTER 20 Access Control Lists 237 IP ACL Operation 237 Standard Versus Extended IPv4 ACLs 237 Calculating Wildcard Masks 237 Wildcard Mask in Operation 238 Guidelines for ACL Creation 239 Guidelines for ACL Placement 240 Standard IPv4 ACLs 240 Configuring Standard IPv4 ACLs 241 Modifying IPv4 ACLs 244 Securing vty Ports with a Standard IPv4 ACL 245 Extended IPv4 ACLs 245 Configuring Extended IPv4 ACL Statements 245 Extended ACL Configuration Scenarios 246 Evaluating Extended IPv4 ACL Statements 247 Extended ACL Quiz 248 Troubleshoot ACLs 251 IPv6 ACLs 252 Comparing IPv4 and IPv6 ACLs 252 Configuring IPv6 ACLs 252 CHAPTER 21 DHCP 255 Dynamic Host Configuration Protocol v4 255 DHCPv4 Operation 255 Configuring a Cisco Device as a DHCPv4 Server 256 Configuring a Router to Relay DHCPv4 Requests 258 Configuring a Router as a DHCPv4 Client 259 Troubleshooting DHCPv4 259 Dynamic Host Configuration Protocol v6 260 SLAAC and DHCPv6 260 Configuring a Router as a Stateless DHCPv6 Server 262 Configuring a Router as a Stateful DHCPv6 Server 263 CHAPTER 22 Network Address Translation for IPv4 265 NAT Operation 265 NAT Characteristics 265 Configuring NAT 267 Configuring Static NAT 267 Configuring Dynamic NAT 268 Configuring Port Address Translation 269 A Word About Port Forwarding 272 Configuring NAT and IPv6 272 Troubleshooting NAT 273 9781587133459, TOC, 11/22/2013