N10-009 exam domains
The N10-009 exam is weighted across 5 domains. Pick any domain below to drill it — or read the full breakdown in the FAQ.
| Exam domain | Exam weight | Practice |
|---|---|---|
| Networking Concepts | 23% | Practice this topic |
| Network Implementation | 20% | Practice this topic |
| Network Operations | 19% | Practice this topic |
| Network Security | 14% | Practice this topic |
| Network Troubleshooting | 24% | Practice this topic |
Sample N10-009 questions
A sample of the N10-009 questions on this hub. Each links through to the full question, the correct answer, and an explanation of why every other option is wrong.
- A technician is deploying three access points in the 2.4 GHz band across a small office to provide overlapping coverage without co-channel interferenc…View question
- A company is deploying wireless access points in a newly renovated conference center that frequently hosts large events with hundreds of attendees. Th…View question
- A company is deploying new access points in a densely populated office building. The IT team wants maximum throughput for modern laptops and phones wh…View question
- A network technician configures an interface between two switches to carry traffic for VLANs 10, 20, and 30. On this link, how are frames from each VL…View question
- A security team wants to ensure that every device connecting to a wired switch port must present valid credentials before it is granted any network ac…View question
- A network administrator is deploying port-based authentication so that laptops must prove their identity before gaining LAN access. In the 802.1X fram…View question
- During a compliance audit, an assessor asks the network administrator to produce a report showing which administrators logged into the core switches,…View question
- A network administrator configures an ACL on a router interface to permit HTTP and HTTPS traffic from the guest VLAN to a specific web server. After a…View question
- A network engineer is designing a high-availability solution for a pair of firewalls that must handle peak traffic loads. The business requires that b…View question
- A company deploys two firewalls in a cluster. The primary firewall handles all traffic while the second unit stays idle, only taking over if the prima…View question
Key N10-009 terms
Start with these terms, then explore the full glossary. Each links to a plain-English definition written for the N10-009 exam.
N10-009 frequently asked questions
What is the N10-009 certification?+
CompTIA describes Network+ as establishing the core knowledge required to work with networks in any environment. The N10-009 objectives emphasise practical skills, so the exam blends conceptual multiple-choice questions with performance-based questions (PBQs) that drop you into a simulated scenario and ask you to configure or diagnose something.
It sits between the entry-level CompTIA A+ and the more security-focused Security+, and is often taken by people who support or administer networks. It is designed to prove you can operate real networks — subnet a range, segment with VLANs, or isolate a cabling fault — rather than only recite definitions.
What topics are on the N10-009 exam?+
The N10-009 exam is organised into five weighted domains. The percentages below are each domain’s share of your score, and they are noticeably uneven — Troubleshooting and Networking Concepts are the two largest — so weight your revision toward those while still covering the lighter security and operations areas.
Networking Concepts (23%)
The conceptual foundation and the second-largest domain. It covers the OSI model and encapsulation, networking appliances and their functions, cloud connectivity concepts, ports and protocols, traffic types, transmission media and transceivers, network topologies, and IPv4/IPv6 addressing including subnetting.
Network Implementation (20%)
Focuses on building the network. It spans routing technologies (static and dynamic routing, NAT, first-hop redundancy), switching technologies (VLANs, trunking, spanning tree, port security, link aggregation, PoE), wireless devices and 802.11 standards, and the physical installation of cabling and hardware.
Network Operations (19%)
Covers keeping a network running. It includes documentation and diagrams, life-cycle, change, and configuration management, network monitoring with SNMP/syslog/flow data, core services (DHCP, DNS, NTP), disaster recovery and high availability (RTO/RPO, redundancy, site resiliency), and secure network access and management.
Network Security (14%)
The security domain. It covers core concepts and terminology (CIA triad, AAA, zero trust, defense in depth), logical and physical security controls, network segmentation and hardening, deception technologies, audits and compliance, and the common attacks and defensive features you are expected to recognise.
Network Troubleshooting (24%)
The largest domain. It centres on the structured CompTIA troubleshooting methodology, cabling and physical-interface issues (attenuation, interference, CRC errors, duplex mismatch), network-services and performance problems (DHCP/DNS faults, latency, packet loss), and the CLI and hardware tools used to diagnose them.
Is the N10-009 hard?+
Network+ is a meaningful step beyond entry level. It is pitched at the early-to-intermediate level, the syllabus is broad, and the passing score is high (720/900), so it rewards genuine understanding over memorisation. Plan for several weeks to a few months of preparation depending on your background.
The two features that make it challenging are subnetting — which you must be able to do quickly and accurately under time pressure — and the performance-based questions, which usually appear first and can eat time if you let them. A common tactic is to flag and skip the PBQs, clear the multiple-choice questions, and return to the simulations with the time that remains.
How many questions are on the N10-009 exam and how long is it?+
The N10-009 exam contains a maximum of 90 questions and allows 90 minutes. It mixes standard multiple-choice and multiple-response questions with performance-based questions (PBQs) — interactive tasks in a simulated environment — which is why the exam feels dense despite the one-minute-per-question pace.
Our full-length practice mock mirrors that scale with a 90-question, 90-minute session so you can rehearse the relentless pacing and build stamina. Sitting a full mock end to end lets you rehearse the real timing before test day.
What score do you need to pass the N10-009?+
CompTIA scores N10-009 on a scale of 100 to 900, and you need 720 to pass — a high bar that works out to roughly 80% and leaves little room for weak areas. Because it is scaled, questions are not all worth the same, and there is no penalty for guessing, so you should answer everything. Our practice mock uses an 80% threshold as a study checkpoint; aim comfortably beyond it before test day.
How much does the N10-009 exam cost?+
A CompTIA Network+ exam voucher is priced by CompTIA and varies by region, with discounted bundles that include study material. The certification is valid for three years and can be renewed through CompTIA’s continuing-education programme. Every resource on this hub is free, which is a real saving given how much official material costs.
Who should take the N10-009?+
Network+ is aimed at people who support, administer, or are moving into networking roles — junior network administrators, help-desk staff progressing toward network support, systems administrators who manage connectivity, and field or NOC technicians.
CompTIA recommends, but does not require, around a year of networking experience (and often the A+ certification first). Meeting that recommendation makes the exam far more manageable, but motivated newcomers pass it too with disciplined study, especially on subnetting.
What jobs and salaries can the N10-009 lead to?+
Network+ is relevant to roles such as network administrator, network support technician, systems administrator, network engineer (junior), and NOC analyst, where configuring and troubleshooting networks is part of the job. It also lays the groundwork for vendor tracks such as Cisco’s.
How much any certification moves compensation depends heavily on geography, seniority, and hands-on experience, so treat any single salary figure with caution. Network+ is best viewed as a way to demonstrate broad networking competence rather than a guaranteed raise on its own.
How long does it take to study for the N10-009?+
Plan for more time than a foundational exam: candidates with IT experience often need four to eight weeks, while newcomers should budget two to three months at an hour or more a day. Spend the early weeks building conceptual coverage across all five domains and drilling subnetting daily, then commit the back half to practice questions and full timed mocks, including deliberate PBQ practice.
A good rhythm is to study one domain at a time and take its topic quiz immediately, then move to mixed full-length mocks in the final stretch — reviewing every explanation, including for questions you answered correctly, because Network+ distractors are built from realistic misconfigurations. Use the per-domain results here to find your weakest area and drill it again before booking.
How should you prepare for the N10-009?+
Study the five domains above in order, giving the heaviest weight to Troubleshooting and Networking Concepts, then drill practice questions domain by domain. Every MockAPI question reveals a detailed explanation and a per-option breakdown of why each distractor is wrong, which is essential for an exam whose wrong answers are engineered to look right.
Once your domain scores are solid, sit full-length timed mocks to build the pacing and stamina N10-009 demands, and treat the performance-based questions as a distinct skill to rehearse rather than dread. Use the glossary to nail the precise terminology, and only book the real exam once you clear the pass mark on mocks consistently.
Can you take the N10-009 exam online?+
Yes. CompTIA delivers Network+ through Pearson VUE, so you can test at a physical Pearson VUE centre or online with remote proctoring. The online exam has strict environment rules: a private, quiet room, a clear desk, a webcam and microphone, a stable connection, and government-issued photo ID, with a proctor monitoring you throughout and a room scan before you start.
If you do not pass, CompTIA lets you retake the exam a second time immediately with no waiting period, but a third or later attempt requires a 14-day wait after your most recent try, and every attempt needs its own voucher. Once you pass, the certification is valid for three years and can be kept current through continuing-education units.
What certification should you take after the N10-009?+
Network+ pairs naturally with CompTIA Security+ for a broad infrastructure-and-security foundation, and A+ below it if you are earlier in your career. It also sets up the move to vendor-specific networking tracks.
A frequent next step for deeper routing and switching is a vendor track such as Cisco’s CCNA, and from there specialist or professional networking credentials. Pairing any of these with hands-on experience on real network gear is what turns a certificate into a career.