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Viser: Networking Essentials Companion Guide
Networking Essentials Companion Guide
Cisco Networking Cisco Networking Academy
(2022)
Sprog: Engelsk
Cisco Press
584,00 kr.
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Detaljer om varen
- Hardback: 544 sider
- Udgiver: Cisco Press (April 2022)
- ISBN: 9780137660483
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.
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.
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
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
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