CompTIA Network+ Study Guide: How to Prepare for N10-009

What you are preparing for on N10-009

The exam you can book today is CompTIA Network+ V9, series code N10-009, launched June 20, 2024. As checked on October 18, 2026, CompTIA lists a maximum of 90 questions, multiple-choice and performance-based, in 90 minutes, and a passing score of 720 on a scale of 100 to 900. The objectives (version 4.0) split the exam into five domains:

CompTIA recommends experience but does not require it. The Network+ page suggests CompTIA A+ certification plus 9 to 12 months of hands-on work as a junior network administrator or network support technician. The objectives PDF words it more simply, as at least 9 to 12 months in the IT networking field. If you have less, plan more lab time, not a different exam.

CompTIA has also posted draft objectives for the next version, V10 (N10-010), with no launch date as of October 18, 2026. Everything on this page is for N10-009. The N10-009 vs N10-010 guide tracks the draft.

A study order built on what each topic reuses

Domain order is not study order. Routing questions assume you can read a prefix. VLAN questions assume you know which layer a switch works at. Troubleshooting questions reuse all of it. So learn the pieces in the order the later ones depend on, and keep the weights in view so the large domains get the most hours.

Between them, the stages cover all 25 objectives. Objective 1.8 is split because its IPv6 part belongs with addressing, while SDN, VXLAN, zero trust and infrastructure as code fit better once the basics are in place. Two objectives deserve an early start. Subnetting (1.7) is arithmetic, and it gets faster only with daily repetition, so start the subnetting method in week one. The troubleshooting methodology (5.1) is an objective on N10-009, so learn its seven steps early and use them on every lab problem. The methodology guide walks through them.

How many weeks each stage takes depends on your starting point. The study time guide shows how to estimate it from your own baseline.

Once you know your weekly hours, turn your N10-009 exam date into a dated study outline →. The free plan generator uses your exam date, your daily minutes and the domain you feel weakest in.

Turn every objective heading into a by-hand check

Reading an objective tells you the topic. It does not tell you whether you can do the task. For each of the 25 objectives, write one check you could pass without notes. If you cannot pass it, that objective goes back on the list.

Write the rest yourself from the N10-009 objectives explained. One caution from the objectives document itself: CompTIA says the bulleted examples under each objective are not a complete list, and other related technologies or tasks may appear on the exam. Build checks that test understanding of the objective, not only the bullets under it.

Learn acronyms inside their topic

The N10-009 objectives end with a long acronym list. Reading it top to bottom is a weak way to learn it, because alphabetical order separates terms that belong together. Learn acronyms where they do their work instead:

• In pairs that get confused. RPO and RTO, MTTR and MTBF, SSID and BSSID, RADIUS and TACACS+, SNMP v2c and v3.
• By layer or job. Put CRC, runts and giants with interface counters, and DNSSEC, DoH and DoT with name resolution.
• With one line of meaning. Write what the term does, not only what the letters stand for. "SVI: the routed interface a switch uses for a VLAN" is more useful on exam day than the expansion alone.

A free lab on your own computer

You do not need a rack of equipment to practice most of N10-009. Objective 5.5 names command-line tools, and most of them are built into common operating systems. Use them on your own machine and your own network:

1. Map your own connection. Run ipconfig on Windows, or ip addr and ip route on Linux, and write down your address, mask and gateway. Then work out your subnet's range by hand and confirm the gateway falls inside it.
2. Follow a path. Run traceroute (or tracert on Windows) to a public website and find the hop where your own network ends.
3. Compare two DNS tools. Look up the same name with nslookup and with dig where it is available, and note which answer shows the record type and TTL more clearly.
4. See what is listening. Run netstat -an (or ss -lntu on Linux) to list listening ports and match each one to a service from the 1.4 table.
5. Watch real packets. Use a free protocol analyzer to capture your own traffic while you load a web page. Find the DNS query, the TCP handshake and the start of TLS.

The objectives document also includes CompTIA's proposed hardware and software list for labs. It names items such as a protocol analyzer, terminal emulation software, hypervisor software and a virtual network environment. If your computer can run a hypervisor, a few virtual machines on separate virtual networks are enough to practice routing and firewall rules.

Capture and scan only networks you own or are allowed to test. That applies to Nmap, which is also in objective 5.5.

Practice that builds skill, and material that can cost you the certification

CompTIA is direct about brain dumps. The N10-009 objectives say candidates who use them will have their certifications revoked and be suspended from future testing. The Candidate Agreement (version 2026.07.24) treats exam materials as confidential and lists using brain dump material, or publishing exam questions, as misconduct. It also requires you to report exposure to unauthorized materials, whether that happens before, during or after testing. If you are not sure about a resource, the objectives give an address to ask: examsecurity@comptia.org.

That still leaves plenty of legitimate practice. CompTIA's unauthorized-materials FAQ says your own notes and study groups are fine as long as no real exam questions are shared, and free videos or forums are fine with caution. It also says that if you recognize real exam questions during your test, you should stop and contact CompTIA.

CompTIA's Network+ page offers its own short practice quiz, and the objectives are free to download. Scenario questions help most when you read why each wrong option fails, not only which option was right. When the first two stages of the study order feel solid, check your N10-009 reasoning across all five domains → with one fixed set of 20 original mixed questions, each with an explanation for every option and a domain breakdown at the end.

If you are deciding between CompTIA Network+ and CompTIA Security+ as your next exam, that is a separate question, and the Security+ guide on taking Network+ before Security+ covers it.