Overview

Networking Essentials Companion Guide is the official supplemental textbook for the Networking Essentials course in the Cisco Networking Academy. Networking is at the heart of the digital transformation. The network is essential to many business functions today, including business-critical data and operations, cybersecurity, and so much more. A wide variety of career paths rely on the network, so it's important to understand what the network can do, how it operates, and how to protect it. This is a great course for developers, data scientists, cybersecurity specialists, and other professionals looking to broaden their networking domain knowledge. It's also an excellent launching point for students pursuing a wide range of career pathways—from cybersecurity to software development to business and more. The Companion Guide is designed as a portable desk reference to use anytime, anywhere to reinforce the material from the course and organize your time. The book's features help you focus on important concepts to succeed in this course: * Chapter objectives: Review core concepts by answering the focus questions listed at the beginning of each chapter. * Key terms: Refer to the lists of networking vocabulary introduced and highlighted in context in each chapter. * Glossary: Consult the comprehensive Glossary with more than 250 terms. * Summary of Activities and Labs: Maximize your study time with this complete list of all associated practice exercises at the end of each chapter. * Check Your Understanding: Evaluate your readiness with the end-of-chapter questions that match the style of questions you see in the online course quizzes. The answer key explains each answer.

Full Product Details

Author:   Cisco Networking Academy
Publisher:   Pearson Education (US)
Imprint:   Cisco Press
Dimensions:   Width: 19.40cm , Height: 2.00cm , Length: 23.00cm
Weight:   0.860kg
ISBN:  

9780137660483

ISBN 10:   0137660480
Pages:   544
Publication Date:   06 April 2022
Audience:   Professional and scholarly ,  Professional & Vocational
Replaced By:   9780138321338
Format:   Hardback
Publisher's Status:   Active
Availability:   In stock  
We have confirmation that this item is in stock with the supplier. It will be ordered in for you and dispatched immediately.

Table of Contents

"Introduction xxvii Chapter 1 Communications in a Connected World 1 Objectives 1 Key Terms 1 Introduction (1.0) 2 Network Types (1.1) 3     Everything Is Online (1.1.1) 3     Who Owns ""The Internet""? (1.1.2) 3     Local Networks (1.1.3) 3     Mobile Devices (1.1.5) 7     Connected Home Devices (1.1.6) 10     Other Connected Devices (1.1.7) 12 Data Transmission (1.2) 15     Types of Personal Data (1.2.2) 15     Common Methods of Data Transmission (1.2.4) 16 Bandwidth and Throughput (1.3) 17     Bandwidth (1.3.1) 17     Throughput (1.3.3) 18 Clients and Servers (1.4) 19     Client and Server Roles (1.4.1) 19     Peer-to-Peer Networks (1.4.2) 20     Peer-to-Peer Applications (1.4.3) 21     Multiple Roles in the Network (1.4.4) 22 Network Components (1.5) 23     Network Infrastructure (1.5.2) 23     End Devices (1.5.3) 25 Summary (1.6) 26 Practice 27 Check Your Understanding 27 Chapter 2 Online Communications 31 Objectives 31 Key Terms 31 Introduction (2.0) 32 Wireless Networks (2.1) 32     Mobile Telephones (2.1.2) 32     Cell Phone Network (2.1.3) 32     Other Wireless Networks (2.1.5) 33 Local Network Connections (2.2) 34     LAN Components (2.2.2) 34     End Device Addressing (2.2.4) 39     Manual and Automatic Address Assignment (2.2.6) 40 Network Documentation (2.3) 41     Device Names and Address Planning (2.3.1) 41     Network Topologies and Representations (2.3.2) 42     Logical Network Information (2.3.4) 43 Summary (2.4) 45 Practice 46 Check Your Understanding Questions 46 Chapter 3 Explore Networks with Packet Tracer 49 Objectives 49 Key Terms 49 Introduction (3.0) 50 Packet Tracer Network Simulator (3.1) 50 Packet Tracer Installation (3.2) 50 The Packet Tracer User Interface (3.3) 51     Locate and Deploy Devices (3.3.2) 52 Packet Tracer Network Configuration (3.4) 53     GUI and CLI Configuration in Packet Tracer (3.4.2) 54 Summary (3.5) 59 Practice 61 Check Your Understanding Questions 61 Chapter 4 Build a Simple Network 67 Objectives 67 Key Terms 67 Introduction (4.0.1) 68 Network Media Types (4.1) 68     Three Media Types (4.1.2) 68     Common Network Cables (4.1.3) 69 Ethernet Cabling (4.2) 71     Twisted-Pair Cables (4.2.1) 71     Types of Twisted-Pair Cables (4.2.2) 72 Coaxial and Fiber-Optic Cabling (4.3) 75     Cable TV and Satellite Cables (4.3.1) 75     Fiber-Optic Cables (4.3.2) 76 Twisted-Pair Operation (4.4) 78     Twisted-Pair Wiring Schemes (4.4.1) 78     Twisted-Pair Transmit and Receive Pairs (4.4.2) 79 Verify Connectivity (4.5) 79     Using the ping Command (4.5.2) 80     The traceroute Command (4.5.3) 81 Summary (4.6) 83 Practice 85 Check Your Understanding Questions 85 Chapter 5 Communication Principles 89 Objectives 89 Key Terms 89 Introduction (5.0.1) 90 The Rules (5.1) 90     The Three Elements (5.1.1) 90     Communication Protocols (5.1.2) 91     Why Protocols Matter (5.1.3) 93 Communication Standards (5.2) 95     The Internet and Standards (5.2.2) 95     Network Standards Organizations (5.2.3) 95 Network Communication Models (5.3) 96     The Protocol Stack (5.3.3) 97     The TCP/IP Model (5.3.4) 98     The OSI Reference Model (5.3.5) 99     Upper and Lower Layers of the OSI Model (5.3.6) 100     OSI Model and TCP/IP Model Comparison (5.3.7) 101 Ethernet (5.4) 103     The Rise of Ethernet (5.4.1) 103     Ethernet Evolution (5.4.2) 104     The Ethernet MAC Address (5.4.4) 105 Summary (5.5) 107 Practice 108 Check Your Understanding Questions 108 Chapter 6 Network Design and the Access Layer 111 Objectives 111 Key Terms 111 Introduction (6.0.1) 112 Encapsulation and the Ethernet Frame (6.1) 112     Encapsulation (6.1.2) 112     Ethernet Frame (6.1.3) 114 Hierarchical Network Design (6.2) 115     Physical and Logical Addresses (6.2.2) 115     Hierarchical Analogy (6.2.5) 117     Benefits of a Hierarchical Design (6.2.7) 117     Access, Distribution, and Core (6.2.8) 119 The Access Layer (6.3) 120     Access Layer Devices (6.3.1) 121     Ethernet Hubs (6.3.2) 121     Ethernet Switches (6.3.4) 123     The MAC Address Table (6.3.6) 124 Broadcast Containment (6.4) 126     Ethernet Broadcasts in the Local Network (6.4.2) 126     Broadcast Domains (6.4.3) 127     Access Layer Communication (6.4.4) 128     ARP (6.4.6) 129 Summary (6.5) 131 Practice 133 Check Your Understanding Questions 133 Chapter 7 Routing Between Networks 137 Objectives 137 Key Terms 137 Introduction (7.0.1) 138 The Need for Routing (7.1) 138     Criteria for Dividing the Local Network (7.1.2) 138     When Routing Is Needed (7.1.3) 141 The Routing Table (7.2) 142     Path Selection (7.2.2) 142     Packet Forwarding (7.2.5) 143     Routing Table Entries (7.2.7) 145     The Default Gateway (7.2.8) 146 Create a LAN (7.3) 147     Local-Area Networks (7.3.1) 147     Local and Remote Network Segments (7.3.2) 148 Summary (7.4) 152 Practice 153 Check Your Understanding Questions 153 Chapter 8 The Internet Protocol 157 Objectives 157 Key Terms 157 Introduction (8.0.1) 158 Purpose of the IPv4 Address (8.1) 158     The IPv4 Address (8.1.1) 158 Binary Conversion of an IPv4 Address (8.2) 159     IPv4 Addressing (8.2.1) 159     Binary to Decimal (8.2.3) 160 The IPv4 Address Structure (8.3) 162     Networks and Hosts (8.3.2) 162     Logical AND (8.3.5) 163     Calculate Whether the Destination Is Local or Remote (8.3.6) 164     Calculate the Number of Hosts (8.3.7) 165 Classful IPv4 Addressing (8.4) 166     Classful and Classless Addressing (8.4.1) 166 Public and Private IPv4 Addresses (8.5) 168     Private IPv4 Addressing (8.5.1) 168     Assignment of IPv4 Addresses (8.5.2) 169 Unicast, Broadcast, and Multicast Addresses (8.6) 171     Unicast Transmission (8.6.2) 171     Broadcast Transmission (8.6.4) 172     Multicast Transmission (8.6.6) 173 Summary (8.7) 175 Practice 177 Check Your Understanding Questions 177 Chapter 9 Dynamic Addressing with DHCP 181 Objectives 181 Key Terms 181 Introduction (9.0.1) 182 Static and Dynamic Addressing (9.1) 182     Static IPv4 Address Assignment (9.1.1) 182     Dynamic IPv4 Address Assignment (9.1.2) 183     DHCP Servers (9.1.3) 184 DHCPv4 Configuration (9.2) 185     DHCPv4 Operation (9.2.2) 185     DHCP Service Configuration (9.2.4) 186 Summary (9.3) 188 Practice 189 Check Your Understanding Questions 189 Chapter 10 IPv4 and IPv6 Address Management 193 Objectives 193 Key Terms 193 Introduction (10.0.1) 194 Network Boundaries (10.1) 194     Routers as Gateways (10.1.2) 194     Routers as Boundaries Between Networks (10.1.3) 195 Network Address Translation (10.2) 196     NAT Operation (10.2.2) 196 IPv4 Issues (10.3) 198     Need for IPv6 (10.3.1) 198     IPv6 Address Size (10.3.2) 200     IPv4 and IPv6 Coexistence (10.3.4) 201 IPv6 Features (10.4) 203     IPv6 Autoconfiguration and Link-Local Addresses (10.4.3) 203     IPv6 Address Representation (10.4.5) 204 Summary (10.5) 206 Practice 207 Check Your Understanding Questions 208 Chapter 11 Transport Layer Services 211 Objectives 211 Key Terms 211 Introduction (11.0.1) 212 The Client/Server Relationship (11.1) 212     Client and Server Interaction (11.1.1) 212     Client Requests a Web Page (11.1.3) 213     URI, URN, and URL (11.1.4) 214 TCP and UDP (11.2) 215     Protocol Operations (11.2.1) 215     TCP and UDP (11.2.3) 216     TCP Reliability (11.2.4) 216     UDP Best Effort Delivery (11.2.5) 217 Port Numbers (11.3) 218     TCP and UDP Port Numbers (11.3.2) 218     Destination and Source Port Numbers (11.3.3) 220     Socket Pairs (11.3.4) 221     The netstat Command (11.3.5) 223 Summary (11.4) 224 Practice 225 Check Your Understanding Questions 225 Chapter 12 Application Layer Services 229 Objectives 229 Key Terms 229 Introduction (12.0.1) 230 Network Application Services (12.1) 230     Common Network Application Services (12.1.1) 230 Domain Name System (12.2) 231     Domain Name Translation (12.2.1) 231     DNS Servers (12.2.3) 232 Web Clients and Servers (12.3) 233     HTTP and HTML (12.3.2) 233 FTP Clients and Servers (12.4) 234     File Transfer Protocol (12.4.1) 235     FTP Client Software (12.4.3) 236 Virtual Terminals (12.5) 237     Telnet (12.5.2) 237     Security Issues with Telnet (12.5.3) 238 Email and Messaging (12.6) 239     Email Clients and Servers (12.6.1) 239     Email Protocols (12.6.2) 240     Text Messaging (12.6.3) 242     Internet Phone Calls (12.6.4) 243 Summary (12.7) 244 Practice 246 Check Your Understanding Questions 246 Chapter 13 Build a Home Network 249 Objectives 249 Key Terms 249 Introduction (13.0.1) 250 Home Network Basics (13.1) 250     Connecting Home Devices (13.1.1) 250     Components of a Home Network (13.1.2) 251     Typical Home Network Routers (13.1.3) 252 Network Technologies in the Home (13.2) 253     The Electromagnetic Spectrum (13.2.1) 253     LAN Wireless Frequencies (13.2.2) 254     Wired Network Technologies (13.2.3) 255 Wireless Standards (13.3) 257     Wi-Fi Networks (13.3.1) 257     Wireless Settings (13.3.2) 257 Wireless Traffic Controls (13.4) 259     Wireless Channels (13.4.1) 259     Wireless as a Shared Media (13.4.2) 260 Set Up a Home Router (13.5) 261     First Time Setup (13.5.1) 261     Design Considerations (13.5.2) 261     MAC Address Filtering (13.5.3) 263 Summary (13.6) 265 Practice 267 Check Your Understanding Questions 267 Chapter 14 Connect to the Internet 271 Objectives 271 Key Terms 271 Introduction (14.0.1) 272 ISP Connectivity Options (14.1) 272     ISP Services (14.1.1) 272     ISP Connections (14.1.2) 273     Cable and DSL Connections (14.1.3) 274     Additional Connectivity Options (14.1.4) 275 Network Virtualization (14.2) 276     Cloud Computing (14.2.2) 276     Types of Clouds (14.2.3) 276     Cloud Services (14.2.4) 277     Cloud Computing and Virtualization (14.2.5) 277     Advantages of Virtualization (14.2.6) 279     Hypervisors (14.2.7) 279     Network Virtualization (14.2.9) 281     Control Plane and Data Plane (14.2.10) 282     Network Virtualization and SDN (14.2.11) 283     SDN Architecture (14.2.12) 283 Mobile Device Connectivity (14.3) 284     Mobile Devices and Wi-Fi (14.3.1) 284     Wi-Fi Settings (14.3.2) 285     Configure Mobile Wi-Fi Connectivity (14.3.3) 286     Configure Cellular Data Settings (14.3.4) 288     Simple Connectivity with Bluetooth (14.3.6) 290     Bluetooth Pairing (14.3.7) 290 Summary (14.4) 293 Practice 295 Check Your Understanding Questions 295 Chapter 15 Security Considerations 299 Objectives 299 Key Terms 299 Introduction (15.0.1) 300 Security Threats (15.1) 300     Types of Threats (15.1.1) 300     Internal and External Threats (15.1.2) 301 Social Engineering Attacks (15.2) 302     Overview of Social Engineering (15.2.1) 302     Types of Social Engineering Attacks (15.2.2) 303 Malware (15.3) 304     Malicious Software (15.3.1) 305     Types of Malware (15.3.2) 305     Spyware (15.3.3) 306     Adware and Popups (15.3.4) 306     Botnets and Zombies (15.3.5) 307 Denial-of-Service Attacks (15.4) 308     Denial of Service (15.4.1) 308     Distributed Denial of Service (15.4.2) 309     Brute Force (15.4.3) 310 Security Tools (15.5) 310     Security Practices and Procedures (15.5.1) 310     Security Tools and Applications (15.5.2) 312     Patches and Updates (15.5.3) 313 Antimalware Software (15.6) 314     Signs of Infections (15.6.1) 314     Antivirus Software (15.6.2) 315     Antispam Software (15.6.3) 316     Antispyware Software (15.6.4) 316     Additional Safeguards (15.6.5) 317 Summary (15.7) 318 Practice 321 Check Your Understanding Questions 321 Chapter 16 Configure Network and Device Security 325 Objectives 325 Key Terms 325 Introduction (16.0.1) 326 Wireless Security Measures (16.1) 326     Wireless Vulnerabilities (16.1.1) 326     A Comprehensive Security Plan (16.1.2) 327     SSID Broadcasts (16.1.4) 333     Changing Default Settings (16.1.5) 334     MAC Address Filtering (16.1.6) 335 Implement Wireless Security (16.2) 336     Open Authentication (16.2.1) 336     Authentication and Association (16.2.2) 336     Authentication Protocols (16.2.3) 337 Configure a Firewall (16.3) 338     Firewall Overview (16.3.1) 338     Firewall Operation (16.3.2) 338     The DMZ (16.3.3) 339     Port Forwarding (16.3.4) 340     Port Triggering (16.3.5) 341 Summary (16.4) 344 Practice 345 Check Your Understanding Questions 346 Chapter 17 Cisco Switches and Routers 349 Objectives 349 Key Terms 349 Introduction (17.0.1) 350 Cisco Switches (17.1) 350     Connect More Devices (17.1.1) 350     Cisco LAN Switches (17.1.2) 351     LAN Switch Components (17.1.5) 354 Switch Boot Process (17.2) 355     Power Up the Switch (17.2.1) 355     In-Band and Out-of-Band Management (17.2.3) 358     IOS Startup Files (17.2.4) 358 Cisco Routers (17.3) 359     Router Components (17.3.2) 360     Router Interface Ports (17.3.3) 360 Router Boot Process (17.4) 361     Power Up the Router (17.4.1) 361     Management Ports (17.4.2) 365 Summary (17.5) 367 Practice 368 Check Your Understanding Questions 368 Chapter 18 The Cisco IOS Command Line 373 Objectives 373 Key Terms 373 Introduction (18.0.1) 374 Navigate the IOS (18.1) 374     The Cisco IOS Command-Line Interface (18.1.1) 374     Primary Command Modes (18.1.2) 375     A Note About Syntax Checker Activities (18.1.5) 376 The Command Structure (18.2) 376     Basic IOS Command Structure (18.2.1) 376     IOS Command Syntax (18.2.2) 377     Hotkeys and Shortcuts (18.2.4) 378 View Device Information (18.3) 380     Show Commands (18.3.2) 381 Summary (18.4) 387 Practice 388 Check Your Understanding Questions 388 Chapter 19 Build a Small Cisco Network 391 Objectives 391 Key Terms 391 Introduction (19.0.1) 392 Basic Switch Configuration (19.1) 392     Basic Switch Configuration Steps (19.1.1) 392     Switch Virtual Interface Configuration (19.1.2) 394 Configure Initial Router Settings (19.2) 395     Basic Router Configuration Steps (19.2.1) 395     Basic Router Configuration Example (19.2.2) 396 Secure the Devices (19.3) 398     Password Recommendations (19.3.1) 398     Secure Remote Access (19.3.2) 399     Configure SSH (19.3.3) 400     Verify SSH (19.3.5) 402 Connecting the Switch to the Router (19.4) 404     Default Gateway for a Host (19.4.1) 404     Default Gateway on a Switch (19.4.2) 406 Summary (19.5) 409 Practice 411 Check Your Understanding Questions 412 Chapter 20 Troubleshoot Common Network Problems 415 Objectives 415 Key Terms 415 Introduction (20.0.1) 416 The Troubleshooting Process (20.1) 416     Network Troubleshooting Overview (20.1.1) 416     Gather Information (20.1.2) 416     Structured Troubleshooting Methods (20.1.3) 418     Guidelines for Selecting a Troubleshooting Method (20.1.4) 422 Physical Layer Problems (20.2) 423     Common Layer 1 Problems (20.2.1) 423     Wireless Router LEDs (20.2.2) 424     Cabling Problems (20.2.3) 426 Troubleshooting Commands (20.3) 426     Overview of Troubleshooting Commands (20.3.1) 426     The ipconfig Command (20.3.2) 427     The ping Command (20.3.4) 430     Ping Results (20.3.5) 431     Divide and Conquer with ping (20.3.7) 432     The tracert Command (20.3.8) 433     The netstat Command (20.3.9) 434     The nslookup Command (20.3.10) 436 Troubleshoot Wireless Issues (20.4) 438     Causes of Wireless Issues (20.4.1) 438     Authentication and Association Errors (20.4.2) 439 Common Internet Connectivity Issues (20.5) 441     DHCP Server Configuration Errors (20.5.1) 441     Check Internet Configuration (20.5.2) 442     Check Firewall Settings (20.5.3) 444 Customer Support (20.6) 444     Sources of Help (20.6.1) 445     When to Call for Help (20.6.2) 445     Support Desk Interaction (20.6.3) 446     Issue Resolution (20.6.4) 447     Support Desk Tickets and Work Orders (20.6.5) 448 Summary (20.7) 450 Practice 453 Check Your Understanding Questions 454 Appendix A Answers to the ""Check Your Understanding"" Questions 459 Glossary 471 9780137660483    TOC    1/25/2022"

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Cisco Networking Academy is an innovative Cisco education initiative that delivers information and communication technology skills to improve career and economic opportunities around the world. The Academy provides online courses, interactive tools, and lab activities to prepare individuals for information technology and networking careers in virtually every industry.

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