How to Pass CompTIA Network+ (N10-009) in 2026: Complete Study Guide
CompTIA Network+ N10-009 updated the exam with more focus on cloud networking, zero trust, and SD-WAN. This guide covers all 5 domains, what changed from N10-008, and a 7-week study plan to pass on your first attempt.
CompTIA Network+ is the industry-standard entry-level networking certification — the credential that proves you can configure, manage, and troubleshoot real networks regardless of vendor. The N10-009 version, released in 2024, updated the exam to reflect where enterprise networking is actually going: cloud-delivered services, SD-WAN overlays, and zero trust security models. If you are moving from IT helpdesk into networking, or building toward Security+, Network+ is your next step.
What Changed from N10-008 to N10-009
N10-009 is not a minor refresh. CompTIA reorganized several objectives and added content that reflects how modern enterprise networks actually operate. Here are the most significant changes:
- Cloud networking expanded: N10-009 treats cloud connectivity as a first-class topic — VPC concepts, cloud gateways, hybrid cloud networking, and cloud-based firewall services all appear in the objectives where N10-008 treated them lightly.
- SD-WAN added explicitly: N10-008 hinted at software-defined networking; N10-009 directly tests SD-WAN concepts including underlay vs overlay, centralized control planes, and how SD-WAN replaces traditional MPLS for branch connectivity.
- Zero trust architecture: N10-009 tests zero trust as a security model — not just a buzzword. Expect questions on implicit vs explicit trust, micro-segmentation, and how zero trust contrasts with perimeter-based security.
- Wireless updated for Wi-Fi 6/6E: 802.11ax (Wi-Fi 6) and 6 GHz band questions appear in N10-009. WPA3 (SAE for Personal, 192-bit suite for Enterprise, OWE for Open) is fully tested.
- Domain renaming: The five domain names shifted slightly to better reflect modern operational roles. Network Security moved from 19% to 20% weight.
Exam Format and Facts
| Detail | Value |
|---|---|
| Exam Code | N10-009 |
| Questions | Maximum 90 (multiple choice + performance-based) |
| Duration | 90 minutes |
| Passing Score | 720/900 (80%) |
| Price | $369 USD |
| Recommended Experience | 9–12 months networking experience or CompTIA A+ |
| Validity | 3 years (renewable via CE or retake) |
| Prerequisite | None required (A+ recommended) |
Performance-based questions (PBQs) appear at the start of the exam. These are drag-and-drop, fill-in-the-blank, or simulated network tasks. They take longer than multiple-choice questions. If you are stuck on a PBQ, flag it and return after completing the multiple-choice section.
All 5 Domains Explained
| Domain | Weight | Key Topics |
|---|---|---|
| 1. Networking Concepts | 23% | OSI model, TCP/UDP, IP addressing, subnetting, routing protocols (OSPF, BGP basics), cloud networking models, SD-WAN concepts |
| 2. Network Implementation | 19% | VLANs, STP, inter-VLAN routing, wireless standards (802.11a/b/g/n/ac/ax), WPA3, switch/router configuration |
| 3. Network Operations | 17% | Network monitoring (SNMP, NetFlow, syslog), change management, backup/recovery, documentation, high availability |
| 4. Network Security | 20% | Zero trust, firewall types, VPN (IPsec, SSL), IDS/IPS, network hardening, common attacks (DoS, VLAN hopping, ARP spoofing), wireless security |
| 5. Network Troubleshooting | 21% | Troubleshooting methodology, common connectivity issues, cable troubleshooting, wireless interference, CLI tools (ping, traceroute, nslookup, netstat, ipconfig/ifconfig) |
Domain 1 (Networking Concepts) at 23% and Domain 5 (Network Troubleshooting) at 21% together represent 44% of your exam. These two domains are your highest-priority investment. Domain 1 is conceptual and tested through scenario questions; Domain 5 is applied and often tested via PBQs.
Subnetting Cheat Sheet
Subnetting questions appear in every Network+ exam. You cannot use a calculator during the exam. Memorize these values cold:
| CIDR Prefix | Subnet Mask | Usable Hosts | Common Use |
|---|---|---|---|
| /24 | 255.255.255.0 | 254 | Standard LAN segment |
| /25 | 255.255.255.128 | 126 | Half a /24 |
| /26 | 255.255.255.192 | 62 | Quarter of /24 |
| /27 | 255.255.255.224 | 30 | Small department segment |
| /28 | 255.255.255.240 | 14 | Very small segment |
| /29 | 255.255.255.248 | 6 | Tiny segment |
| /30 | 255.255.255.252 | 2 | Point-to-point WAN links |
The formula for usable hosts is 2n − 2, where n is the number of host bits. For /26, there are 6 host bits (32 − 26 = 6), so 26 − 2 = 62 usable hosts. The −2 accounts for the network address (all zeros) and broadcast address (all ones).
7-Week Study Plan
| Week | Focus | Daily Goal |
|---|---|---|
| Week 1 | Networking Concepts (Domain 1) — OSI model, TCP/UDP, IP addressing, ports and protocols | 1.5 hrs video + flashcards |
| Week 2 | Subnetting mastery + routing concepts (OSPF, BGP basics, static routes) | Subnetting drills daily |
| Week 3 | Network Implementation (Domain 2) — VLANs, STP, trunking, wireless standards and WPA3 | 1.5 hrs + Packet Tracer labs |
| Week 4 | Network Security (Domain 4) — Zero trust, VPN types, firewall/IDS/IPS, attack types | 1.5 hrs video + scenario Qs |
| Week 5 | Network Operations (Domain 3) — SNMP, syslog, NetFlow, change management, HA/redundancy | 1 hr video + review notes |
| Week 6 | Network Troubleshooting (Domain 5) — CLI tools, cable issues, troubleshooting methodology | PBQ practice + lab scenarios |
| Week 7 | Full practice exams, weak-area review, exam-day preparation | Target 80%+ on practice exams |
Top Study Resources
- Professor Messer's N10-009 Course (free): The gold standard free resource. Professor Messer's video course covers every objective and is updated for N10-009. His study groups and practice exams are excellent value. Start here.
- Jason Dion on Udemy (paid): Dion's Network+ course includes performance-based question labs and scenario-based practice tests that closely match exam style. Watch for Udemy sales — the course regularly drops to under $20.
- Mike Meyers "All-in-One Network+ Guide": The comprehensive textbook option. Best for candidates who prefer reading over video.
- Cisco Packet Tracer (free): Free network simulator from Cisco. Use it to practice VLAN configuration, STP, inter-VLAN routing, and basic switch/router CLI without needing physical hardware.
- CertLand Network+ Practice Exam: 340 scenario-based questions covering all 5 N10-009 domains, with explanations that follow the exam tip format.
Exam Day Strategy
- Flag and move on PBQs: Performance-based questions appear first. If a PBQ is taking more than 3 minutes, flag it and come back. Multiple-choice questions are faster and can build your confidence.
- Eliminate obviously wrong answers first: Network+ distractors often include incorrect protocol names or impossible configurations. Narrow to two options before committing.
- Watch for "best" vs "only": Many questions ask for the BEST solution. Multiple options may technically work — look for the one that directly solves the stated constraint without adding unnecessary complexity.
- Subnetting: use the magic number method: The magic number is 256 minus the subnet mask octet. For /26 (mask .192), magic number = 256 − 192 = 64. Subnets are at 0, 64, 128, 192.
- Aim for 80%+ before booking: The passing score is 720/900. If you are consistently scoring 75-78% on practice exams, spend another week on weak domains. Do not rush to book.
Ready to Practice?
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