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CompTIA Network+ N10-009 Study Guide

CompTIA Network+ N10-009

CompTIA Network+ (N10-009) is a vendor-neutral networking exam. It covers networking concepts, implementation, operations, security and troubleshooting. It suits network technicians and IT support staff, and it is a common step before Security+ or vendor networking exams.

  • Exam code N10-009
  • Core level
  • 5 exam domains

This guide is free, with no sign-up. It explains every CompTIA Network+ N10-009 exam topic in plain English, one chapter at a time. Read them in order or jump straight to the topic you need.

  • 5chapters
  • 40topics
  • 18diagrams and exhibits
  • 3 h 12 minfast track
Start with Networking Concepts
  • Every topic follows the same simple pattern: what it is, how it works, common mistakes
  • Diagrams and real command output where a picture explains it best
  • Exam tips and worked subnetting and IPv6 practice, with answers

How the exam is weighted

Each domain is worth this share of the exam, so spend your study time in proportion. Select a domain to open its chapter.

Chapters

Open a chapter to see its topics and how long each takes.

1Networking Concepts11 topics · 53 min fast trackOSI, devices, cloud, ports, media, topologies, IP addressing and modern designs.
  1. 1The OSI Reference Model5 min
  2. 2Networking Appliances and Functions5 min
  3. 3Cloud Concepts and Connectivity5 min
  4. 4Common Ports and Protocols4 min
  5. 5IP Protocol Types and Traffic Types4 min
  6. 6Transmission Media and Transceivers5 min
  7. 7Topologies and Network Architectures5 min
  8. 8Network Types and WAN Links5 min
  9. 9IPv4 Addressing and Subnetting5 min
  10. 10IPv6 Addressing and Transition5 min
  11. 11Modern Network Use Cases5 min
Read the chapter overview →
2Network Implementation8 topics · 40 min fast trackRouting, NAT, VLANs, spanning tree, switch features, wireless design and physical installation.
  1. 1Routing Technologies5 min
  2. 2NAT, Gateway Redundancy and Subinterfaces5 min
  3. 3VLANs and Trunking5 min
  4. 4Spanning Tree and Link Aggregation5 min
  5. 5Switch Port Features5 min
  6. 6Wireless Standards and Bands5 min
  7. 7Wireless Configuration and Design5 min
  8. 8Physical Installation Factors5 min
Read the chapter overview →
3Network Operations8 topics · 37 min fast trackDocumentation, change management, monitoring, disaster recovery, DHCP, DNS, NTP and remote access.
  1. 1Network Documentation and Inventory4 min
  2. 2Lifecycle, Change and Configuration Management4 min
  3. 3SNMP, Flow Data and Logging5 min
  4. 4Interface and Environmental Monitoring4 min
  5. 5Disaster Recovery Concepts5 min
  6. 6DHCP and IPv6 Address Assignment5 min
  7. 7DNS and Time Services5 min
  8. 8Network Access and Management Methods5 min
Read the chapter overview →
4Network Security7 topics · 32 min fast trackCore concepts, encryption, identity, attacks, device hardening, ACLs, firewalls and security zones.
  1. 1Core Network Security Concepts5 min
  2. 2Encryption and Certificates4 min
  3. 3Identity and Access Management5 min
  4. 4DoS, Layer 2 and Spoofing Attacks5 min
  5. 5Social Engineering and Malware4 min
  6. 6Device Hardening and Access Control4 min
  7. 7ACLs, Firewalls and Security Zones5 min
Read the chapter overview →
5Network Troubleshooting6 topics · 30 min fast trackThe methodology, cabling, service and performance faults, and the tools used to solve them.
  1. 1The Troubleshooting Methodology5 min
  2. 2Cabling and Physical Interface Issues5 min
  3. 3Troubleshooting Network Service Issues5 min
  4. 4Troubleshooting Performance Issues4 min
  5. 5Command Line and Software Tools6 min
  6. 6Hardware Tools and Discovery Protocols5 min
Read the chapter overview →

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The full CompTIA Network+ N10-009 question bank has 910 questions, with timed practice exams and an explanation for every answer.

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