CompTIA® Network+® N10-009 Certification Guide

Get 100% coverage of the latest CompTIA Network+ N10-009 exam objectives for targeted preparation and unlock online access to 2 full-length mock exams and 400 challenging practice questions

Key Features

• Learn from Ian Neil, bestselling author and world-class CompTIA trainer
• Build a solid foundation in networking with hands-on skills that advance your career
• Test your readiness with practice tests that mirror the real exam
• Save on certification costs with an exclusive 12% Network+ exam discount voucher with this book

Book Description

Looking to pass the CompTIA Network+ N10-009 exam and advance your IT career? Employers seek certified professionals who can design, secure, and troubleshoot modern networks. Memorizing concepts won’t cut it—you need a practical grasp of networking concepts, and this guide helps you build exactly that. Ian Neil, bestselling author of some of the most trusted CompTIA certification resources and a world-class CompTIA trainer, provides 100% coverage of all N10-009 exam objectives.

You’ll start with the networking fundamentals, including the OSI model, topologies, ports, and protocols, then progress to configuring IPv4/IPv6 addressing, routing, switching, VLANs, and wireless networks. You’ll master transmission media and transceivers and strengthen your security expertise with VPNs, IPSec, NAC, IDS/IPS, Zero Trust, and firewalls.

Beyond exam prep, this book explores cloud, virtualization, IoT, SDN, and SD-WAN, ensuring you’re prepared for modern IT environments. It helps build your troubleshooting skills using tools such as SNMP, NetFlow, Wireshark, log analysis, and traceroute.

With practice questions across 25 chapters, 2 full-length online mock exams, 400 exam-style questions, and a 12% exam discount voucher, this guide equips you with the knowledge, experience, and confidence to earn your Network+ certification on the first try.

What you will learn

• Map OSI layers and TCP/IP protocols to real-world scenarios
• Configure routers, switches, and firewalls using IPv4/IPv6 addressing
• Apply cloud, virtualization, and SD-WAN concepts with VPC and Direct Connect
• Recognize common ports and protocols such as DNS, DHCP, SNMP, and HTTPS
• Implement wireless standards (802.11ax/6E), WPA3, and cellular IoT
• Design resilient topologies like star, mesh, and spine-leaf architectures
• Secure networks with VPNs, IPSec, NAC, and zero trust principles
• Troubleshoot using SNMP, NetFlow, packet capture, and traceroute

Who this book is for

This book is for early-career IT professionals preparing for the CompTIA Network+ (N10-009) certification, including network administrators, help desk technicians, and junior systems engineers. Candidates are expected to have 9–12 months of hands-on networking experience and a solid understanding of basic IT concepts, though this guide could also be useful for students and career changers who want to build their foundational networking skills. It’s also valuable for those pursuing further certifications like CompTIA Security+ or vendor-specific networking tracks.

Table of Contents

1. Explain Concepts Related to the Open System Interconnection (OSI) Reference Model
2. Compare and Contrast Networking Appliances, Applications, and Functions
3. Summarize Cloud Concepts and Connectivity Options
4. Explain Common Networking Ports, Protocols, Services, and Traffic Types
5. Compare and Contrast Transmission Media and Transceivers
6. Compare and Contrast Network Topologies, Architectures, and Types
7. Given a Scenario, Use Appropriate IPv4 Network Addressing

(N.B. Please use the Read Sample option to see further chapters)

Ian Neil is one of the world's top trainers of Security+. He is able to break down information into manageable chunks so that people with no background knowledge can gain the skills required to become certified. He has recently worked for the US Army in Europe and designed a Security+ course that catered to people from all backgrounds (not just IT professionals), with an extremely successful pass rate. He is an MCT, MCSE, A+, Network+, Security+, CASP, and RESILIA practitioner that has worked with high-end training providers over the past 23 years and was one of the first technical trainers to train Microsoft internal staff when they opened their Bucharest Office in 2006.