Not sure where to start?
Take the 24-question diagnostic
About 8 minutes, untimed. Every domain gets a band and you get a study-first list; misses go straight into your flashcard reviews.
Timed mock exam
Take a full-length CompTIA Network+ practice test
Questions weighted across every domain, on the clock — with a per-domain score breakdown when you finish.
Exam domains
Each category's percentage is its approximate weight on the CompTIA Network+ exam. The bars track your mastery — terms you've marked “I know this” or recalled from flashcards.
Exam Domains
100%The five N10-009 domains, in exam-objective order. Percentages reflect each domain's approximate weight on the exam.
- Network Troubleshooting12 terms
Domain 4 troubleshooting and tools — the largest domain: the structured troubleshooting methodology, common connectivity and performance problems, and the software and hardware tools used to diagnose them.
- Hardware Tools & Symptoms · 5 terms
- Software Diagnostic Tools · 7 terms
- Networking Concepts23 terms
Domain 1 — the foundational theory: the OSI model, ports and protocols, IPv4 and IPv6 addressing, subnetting, DNS and DHCP services, network topologies, cabling and connectors, and cloud networking concepts.
- OSI Model & Transport Fundamentals · 8 terms
- Services, Addressing & Media · 15 terms
- Network Implementation16 terms
Domain 2 — deploying networks: switching features like VLANs and STP, routing with static and dynamic protocols, wireless standards and security, and the design of physical and logical infrastructure.
- Switching, VLANs & Routing · 10 terms
- Wireless & Modern Networks · 6 terms
- Network Operations9 terms
Domain 3 — running networks day to day: monitoring with SNMP and syslog, ensuring high availability and disaster recovery, applying QoS, and using documentation and organizational processes.
- Availability & Recovery · 4 terms
- Monitoring & Logging · 5 terms
- Network Security8 terms
Domain 4 — securing networks: firewalls, IDS/IPS, network access control, VPNs and IPsec, the zero trust model, and common attacks and hardening techniques.
- Perimeter & Access Defenses · 5 terms
- Secure Access & Zero Trust · 3 terms