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Networking Essentials: A CompTIA Network+ N10-008 Textbook
Thoroughly updated to reflect the CompTIA® Network+ N10-008 exam, Networking Essentials , Sixth Edition is a practical, up-to-date, and hands-on guide to the basics of networking. Written from the viewpoint of a working network administrator, it requires absolutely no experience with either network concepts or day-to-day network management. Networking Essentials , Sixth Edition guides readers from an entry-level knowledge in computer networks to advanced concepts in Ethernet networks; router configuration; TCP/IP networks; routing protocols; local, campus, and wide area network configuration; network security; wireless networking; optical networks; Voice over IP; the network server; and Linux networking. This edition reflects the latest exam topics and objectives associated with network security and hardening, cloud networking, virtualization, 5G, and other recent advances in wireless technology, infrastructure management, and current hardware and devices. It also explains many new terms now addressed by CompTIA’s N10-008 exam. Clear goals are outlined for each chapter, and every concept is introduced in easy-to-understand language that explains how and why networking technologies are used. Each chapter is packed with real-world examples and practical exercises that reinforce all concepts and guide you through using them to configure, analyze, and fix networks. CHALLENGE SIMULATION SOFTWARE provides hands-on experience with entering router and switch commands, setting up functions, and configuring interfaces and protocols WIRESHARK NETWORK PROTOCOL ANALYZER presents techniques and examples of data traffic analysis throughout PROVEN TOOLS FOR MORE EFFECTIVE LEARNING AND NETWORK+ PREP, including chapter outlines, summaries, and Network+ objectives WORKING EXAMPLES IN EVERY CHAPTER to reinforce key concepts and promote mastery KEY TERM DEFINITIONS, LISTINGS, AND EXTENSIVE GLOSSARY to help you master the language of networking QUESTIONS, PROBLEMS, AND CRITICAL THINKING QUESTIONS to help you deepen your understanding
848 pages, Paperback
Published October 29, 2021
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Displaying 1 - 2 of 2 reviews
February 8, 2023
Useful study guide for CompTIA Network+, but not as good as Mike Meyers' CompTIA Network+ Guide to Managing and Troubleshooting Networks. Very detailed, with diagrams and command line samples showing how to configure network devices.
Notes
Introduction to Computer Networks
OSI model
7. Application. Supports applications. HTTP, FTP, SMTP
6. Presentation. Handles protocol conversion, data translation. ASCII, JPEG
5. Session. Establishes, manages, terminates sessions. NFS, SQL
4. Transport. Handles packet delivery. TCP, UDP
3. Network. Provides addressing and routing decisions. IP, ICMP
2. Data link. Provides for data flow. MAC addresses
1. Physical. Handles signals, media. NICs, twisted-pair cable, fiber, wireless
Interconnecting the LANs
ARP
1. Computer 1 checks its ARP cache to see if it already has MAC address of Computer 2. If so, it skips to step 6; otherwise, it goes to step 2.
2. Computer 1 generates an ARP request message for Computer 2, with its own MAC and IP addresses included.
3. Computer 1 broadcasts ARP request message on its local network.
4. Every local network device processes ARP request message. Computers that aren't Computer 2 discard message. Only a match (Computer 2), generates ARP reply message and updates its ARP cache with Computer 1's MAC and IP addresses.
5. Computer 2 sends ARP reply message to Computer 1.
6. Computer 1 receives ARP reply message and updates its ARP cache with MAC and IP addresses of Computer 2.
TCP/IP
TCP/IP model
4. Application. Defines applications used to process requests, which ports and sockets are used.
3. Transport. Defines type of connection established between hosts, how acknowledgments are sent.
2. Internet layer. Defines protocols used for addressing and routing packets.
1. Network interface. Defines how host connects to network.
Network Security
Datagram Transport Layer Security (DTLS): variation of SSL that provides same type of security features, including CIA, but uses UDP.
Tunneled Transport Layer Security (TTLS): similar to TLS in that it ensures privacy, but doesn't require that each party be issued a certificate. Only authentication server is issued a certificate. Client authentication requires a password, but credentials are transported in securely encrypted tunnel that's established based on server certificate.
IPsec is at layer 3.
Spanning Tree Protocol (STP): layer 2 protocol that prevents loops within switched networks.
BPDU Guard: prevents STP PortFast from receiving any BPDU message to modify spanning tree topology.
Notes
Introduction to Computer Networks
OSI model
7. Application. Supports applications. HTTP, FTP, SMTP
6. Presentation. Handles protocol conversion, data translation. ASCII, JPEG
5. Session. Establishes, manages, terminates sessions. NFS, SQL
4. Transport. Handles packet delivery. TCP, UDP
3. Network. Provides addressing and routing decisions. IP, ICMP
2. Data link. Provides for data flow. MAC addresses
1. Physical. Handles signals, media. NICs, twisted-pair cable, fiber, wireless
Interconnecting the LANs
ARP
1. Computer 1 checks its ARP cache to see if it already has MAC address of Computer 2. If so, it skips to step 6; otherwise, it goes to step 2.
2. Computer 1 generates an ARP request message for Computer 2, with its own MAC and IP addresses included.
3. Computer 1 broadcasts ARP request message on its local network.
4. Every local network device processes ARP request message. Computers that aren't Computer 2 discard message. Only a match (Computer 2), generates ARP reply message and updates its ARP cache with Computer 1's MAC and IP addresses.
5. Computer 2 sends ARP reply message to Computer 1.
6. Computer 1 receives ARP reply message and updates its ARP cache with MAC and IP addresses of Computer 2.
TCP/IP
TCP/IP model
4. Application. Defines applications used to process requests, which ports and sockets are used.
3. Transport. Defines type of connection established between hosts, how acknowledgments are sent.
2. Internet layer. Defines protocols used for addressing and routing packets.
1. Network interface. Defines how host connects to network.
Network Security
Datagram Transport Layer Security (DTLS): variation of SSL that provides same type of security features, including CIA, but uses UDP.
Tunneled Transport Layer Security (TTLS): similar to TLS in that it ensures privacy, but doesn't require that each party be issued a certificate. Only authentication server is issued a certificate. Client authentication requires a password, but credentials are transported in securely encrypted tunnel that's established based on server certificate.
IPsec is at layer 3.
Spanning Tree Protocol (STP): layer 2 protocol that prevents loops within switched networks.
BPDU Guard: prevents STP PortFast from receiving any BPDU message to modify spanning tree topology.
March 21, 2023
This book provided simple networking concepts so it is easy to read. You don't need to read in order, just jump to any chapter you like. The book also has multiple-choice questions at the end of each chapter, so you can review your understanding. It is quite helpful to me.
If you're a web developer, I highly recommend you read and understand the concepts in chapters 1, 5, 6, 9, 11, and 12. Other chapters are written about mostly hardware and network infrastructures which are great for hardware developers but might overwhelm web developers.
If you're a web developer, I highly recommend you read and understand the concepts in chapters 1, 5, 6, 9, 11, and 12. Other chapters are written about mostly hardware and network infrastructures which are great for hardware developers but might overwhelm web developers.
Displaying 1 - 2 of 2 reviews