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Mike Meyers' CompTIA Network+ Guide to Managing and Troubleshooting Networks, Sixth Edition
This fully updated four-color textbook is designed for classroom use and covers every topic on the latest version of the challenging CompTIA Network+ exam
Written by Mike Meyers, the leading CompTIA certification and training expert, this full-color resource prepares students for the CompTIA Network+ exam and puts you on the path to becoming an expert networking professional. Thoroughly revised for the current version of the CompTIA Network+ exam, the book contains helpful on-the-job advice, hands-on examples, chapter summaries, key terms quizzes, review questions, lab projects, and hundreds of photographs and illustrations.
Mike Meyers’ CompTIA Network+ Guide to Managing and Troubleshooting Networks, Sixth Edition (Exam N10-008) covers the latest concepts and technologies, including basic datacenter, cloud, and virtual networking concepts. Students will learn networking fundamentals and best practices, and networking fundamentals while following the path to becoming an effective networking professional. Special design elements throughout reinforce salient points while preparing you for exam day.
Contains 100% coverage of every objective for CompTIA Network+ exam N10-008Online content includes 100 accurate practice questions, a self-assessment practice exam engine, videos and lab simulations from Mike Meyers, and on-the-job tools and utilitiesWritten by CompTIA certification and training guru Mike MeyersInstructor materials and answer keys are available to adopting instructors through your McGraw Hill sales representative (answers are not printed in the book)
Written by Mike Meyers, the leading CompTIA certification and training expert, this full-color resource prepares students for the CompTIA Network+ exam and puts you on the path to becoming an expert networking professional. Thoroughly revised for the current version of the CompTIA Network+ exam, the book contains helpful on-the-job advice, hands-on examples, chapter summaries, key terms quizzes, review questions, lab projects, and hundreds of photographs and illustrations.
Mike Meyers’ CompTIA Network+ Guide to Managing and Troubleshooting Networks, Sixth Edition (Exam N10-008) covers the latest concepts and technologies, including basic datacenter, cloud, and virtual networking concepts. Students will learn networking fundamentals and best practices, and networking fundamentals while following the path to becoming an effective networking professional. Special design elements throughout reinforce salient points while preparing you for exam day.
Contains 100% coverage of every objective for CompTIA Network+ exam N10-008Online content includes 100 accurate practice questions, a self-assessment practice exam engine, videos and lab simulations from Mike Meyers, and on-the-job tools and utilitiesWritten by CompTIA certification and training guru Mike MeyersInstructor materials and answer keys are available to adopting instructors through your McGraw Hill sales representative (answers are not printed in the book)
784 pages, Kindle Edition
Published March 25, 2022
7 people are currently reading
5 people want to read
About the author
Mike Meyers
229 books70 followersIT Author and tutor, and President at Total Seminars. LLC
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Displaying 1 of 1 review
January 20, 2023
Very good study guide for the CompTIA Network+ N10-008 exam. It's engaging, with humor, illustrations, and examples; it's not as dry as other study guides. Each chapter ends with 15 practice multiple choice questions, 2 essay questions, and 2-3 lab projects. The book includes helpful exam tips. "Appendix A: Exam Objective Map" lists all the exam objectives and tells which pages address them, and the glossary is extensive.
Notes
Routing
Autonomous System (AS): one or more networks that share a “policy” about how they exchange traffic with other ASs. Each has a globally unique number (ASN) assigned by IANA.
BGP is only protocol for communication between ASs. Other protocols are interior gateway protocols (IGPs) (RIP, OSPF, IS-IS, EIGRP).
Open Shortest Path First (OSPF) is most commonly used IGP. It's better than RIP.
Enhanced Interior Gateway Routing Protocol (EIGRP) is proprietary protocol developed by Cisco before OSPF. It has aspects of both distance vector and link state protocols.
TCP/IP Applications
UDP: DNS, DHCP, NTP/SNTP, TFTP
Netstat lets you see active TCP/IP connections.
Protecting Your Network
DNS cache poisoning: attacker poisons DNS server's cache to point clients to malicious server. DNSSEC prevents it.
DHCP snooping enables switch to create DB of MAC addresses of known DHCP servers and clients. Unauthorized DHCP traffic is blocked, and admin is alerted.
Router Advertisement Guard (RA-Guard) enables switch to block unauthorized router advertisements and router redirect messages to protect against rogue router advertisements on IPv6 networks.
ARP cache poisoning: bad actor sends false ARP frames to put incorrect data in client ARP caches, to perform AITM attack. Dynamic ARP Inspection (DAI) enables switch to block unknown MAC addresses.
Reflection attack: attacker sends requests that spoof target server's IP address to normally operating servers (e.g., DNS, NTP), so that they send traffic to target server.
Amplification attack: attacker sends small requests that trigger large responses, reflected at target.
DHCP starvation attack: attacker spoofs packets to DHCP server, tricking it into giving away all its leases.
Session hijacking: attacker intercepts valid session to get authentication info. Unlike AITM attack, goal is to get authentication info, not necessarily eavesdrop.
VLAN hopping: attacker abuses VLAN commands to switch to convince it to switch port connection to a trunk link, to access another VLAN they shouldn't have access to.
Bastion host: host designed to be fully exposed to and withstand attacks from open Internet. Exposed because it provides a service to clients outside network.
Network Monitoring
Utilities that analyze packets can be called packet sniffer, packet analyzer, protocol analyzer, network analyzer.
Network Troubleshooting
Route: display and edit system's routing table
Netstat: display current state of running IP processes; see which sessions are active; see stats based on ports or protocols. Linux equivalent: ss.
Nmap: port scanner
Looking glass sites: remote servers accessible with a browser with diagnostic tools such as ping and traceroute, and BGP query tools.
Notes
Routing
Autonomous System (AS): one or more networks that share a “policy” about how they exchange traffic with other ASs. Each has a globally unique number (ASN) assigned by IANA.
BGP is only protocol for communication between ASs. Other protocols are interior gateway protocols (IGPs) (RIP, OSPF, IS-IS, EIGRP).
Open Shortest Path First (OSPF) is most commonly used IGP. It's better than RIP.
Enhanced Interior Gateway Routing Protocol (EIGRP) is proprietary protocol developed by Cisco before OSPF. It has aspects of both distance vector and link state protocols.
TCP/IP Applications
UDP: DNS, DHCP, NTP/SNTP, TFTP
Netstat lets you see active TCP/IP connections.
Protecting Your Network
DNS cache poisoning: attacker poisons DNS server's cache to point clients to malicious server. DNSSEC prevents it.
DHCP snooping enables switch to create DB of MAC addresses of known DHCP servers and clients. Unauthorized DHCP traffic is blocked, and admin is alerted.
Router Advertisement Guard (RA-Guard) enables switch to block unauthorized router advertisements and router redirect messages to protect against rogue router advertisements on IPv6 networks.
ARP cache poisoning: bad actor sends false ARP frames to put incorrect data in client ARP caches, to perform AITM attack. Dynamic ARP Inspection (DAI) enables switch to block unknown MAC addresses.
Reflection attack: attacker sends requests that spoof target server's IP address to normally operating servers (e.g., DNS, NTP), so that they send traffic to target server.
Amplification attack: attacker sends small requests that trigger large responses, reflected at target.
DHCP starvation attack: attacker spoofs packets to DHCP server, tricking it into giving away all its leases.
Session hijacking: attacker intercepts valid session to get authentication info. Unlike AITM attack, goal is to get authentication info, not necessarily eavesdrop.
VLAN hopping: attacker abuses VLAN commands to switch to convince it to switch port connection to a trunk link, to access another VLAN they shouldn't have access to.
Bastion host: host designed to be fully exposed to and withstand attacks from open Internet. Exposed because it provides a service to clients outside network.
Network Monitoring
Utilities that analyze packets can be called packet sniffer, packet analyzer, protocol analyzer, network analyzer.
Network Troubleshooting
Route: display and edit system's routing table
Netstat: display current state of running IP processes; see which sessions are active; see stats based on ports or protocols. Linux equivalent: ss.
Nmap: port scanner
Looking glass sites: remote servers accessible with a browser with diagnostic tools such as ping and traceroute, and BGP query tools.
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