N10-009 study plan: pass Network+ in 6 weeks

Six weeks at 6–8 hours a week. This assumes some IT exposure — CompTIA recommends A+ plus 9 to 12 months in a support role, and the plan is realistic for someone around that level.

Two things run through every week: subnetting practice and performance-based question practice. Both are skills rather than knowledge, and both need repetition rather than reading.

Week 1: networking concepts, part one (23%)

• The OSI model — seven layers, what lives at each, and which device or protocol belongs where. This is the mental framework the whole exam uses.
• The TCP/IP model and how it maps across.
• Topologies and network types: LAN, WAN, WLAN, and the cloud models.
• Cables and connectors, and the distance and speed limits that make a scenario answerable.

Week 2: networking concepts, part two, and subnetting

• IPv4 addressing: classes, private ranges, CIDR notation.
• Subnetting — the skill most people underestimate. Practise until you can subnet without a calculator, quickly.
• IPv6 fundamentals.
• Ports and protocols: the common ones, their numbers, and what they do. These recur across every other domain.
• DHCP, DNS and NAT.

Subnetting deserves daily practice from here to the exam. Ten minutes a day beats one long session.

Week 3: network implementation (20%)

• Routing: static versus dynamic, and the common protocols at a conceptual level.
• Switching: VLANs, trunking, spanning tree, port configuration.
• Wireless: standards, frequencies, channels, interference and placement.
• Physical installation: racks, power, cooling, cabling practice.

Week 4: network operations (19%) and security (14%)

Operations:

• Monitoring, SNMP, logging and baselines.
• Documentation — diagrams, labelling, and why it is examinable.
• Availability: redundancy, high availability, backups and disaster recovery concepts.
• Change management as it applies to networks.

Security:

• Common attacks and their network signatures.
• Hardening devices; secure protocols over insecure ones.
• Physical and logical access control, and segmentation.
• VPNs and remote access.

Security is only 14% here — Security+ is where it goes deep.

Week 5: troubleshooting (24%)

The largest domain, and the one you cannot learn from a book alone.

• The CompTIA troubleshooting methodology, in order. Know the steps and their sequence — questions ask what to do next, and the answer is usually the next step in the method.
• Common tools: ping, traceroute/tracert, ipconfig/ifconfig, nslookup/dig, netstat, arp, and cable testers.
• Connectivity problems: physical, addressing, routing, name resolution.
• Wireless problems: signal, interference, channel overlap, authentication.
• Performance problems: bandwidth, latency, duplex mismatch, bottlenecks.

Work through the layers. Most diagnostic questions are answerable by asking which OSI layer the symptom points at.

Week 6: practice and repair

• Full practice exam under real conditions: 90 minutes, no notes. Time pressure is part of what you are training.
• Practise performance-based questions specifically, and practise leaving them until last.
• Sort mistakes by domain and rebuild the weakest.
• Second practice exam. Book when you are consistently above 80% and finishing inside the hour and a half.

Where the hours go

The two skills to drill

Subnetting. It is not a topic you revise once. Ten minutes daily for six weeks turns it from a stumbling block into free marks.

Ports and protocols. Flashcards. They appear in concepts, implementation, security and troubleshooting — far beyond their own section.

If time runs short, protect weeks 1, 2 and 5. Concepts and troubleshooting are 47% of the exam between them, and the concepts underpin everything else.