CompTIA Network+ (N10-009) Practice Exams

How the N10-009 exam is structured

CompTIA Network+ (N10-009) is a CompTIA certification with approximately 90 questions in 90 minutes. The table below shows the exam weighting published for each domain, so you can decide where to spend your study time instead of working through the syllabus in order.

Domain	Exam weight	What it covers
Networking Fundamentals	24%	Explain networking fundamentals
Network Troubleshooting	22%	Troubleshoot network problems
Network Implementations	19%	Implement network devices and infrastructure
Network Security	19%	Secure networks and mitigate threats
Network Operations	16%	Maintain and monitor networks

A passing study plan usually trails the weighting: spend the most sessions on Networking Fundamentals (24%), then check the next domain down before moving on. If your accuracy on a high-weight domain stays under 80%, more practice there is worth more than another pass at a low-weight topic.

Worked sample N10-009 questions

These questions come from the CompTIA Network+ (N10-009) practice bank. Read the rationale even when you answer correctly — the explanation is usually where the exam technique lives.

Sample question 1 — Network Implementations

Handheld scanners in a warehouse keep their association with the first access point they joined, even after staff walk several aisles away, and scans fail at the edge of that cell. Every access point broadcasts the same SSID at maximum transmit power, and a survey shows heavy overlap between neighbouring cells. Which change helps most?

A. Place every access point on one channel so scanners never have to scan another channel to roam.
B. Shorten the DHCP lease so a scanner requests a new address when it moves to another part of the site.
C. Raise transmit power further so each scanner keeps a strong signal anywhere it is used in the building.
D. Lower transmit power, plan non-overlapping channels, and enable fast roaming so clients hand off

Answer: D. Option D is correct. Sticky clients usually indicate cells that are too large and overlapping, so reducing power, planning a non-overlapping channel layout, and enabling fast transition give the scanner a better neighbour to move to and a quicker way to get there. Option C is wrong because more power enlarges the cell the scanner is already clinging to and adds co-channel contention. Option A is wrong because a single shared channel forces every access point and client to compete for the same airtime. Option B is wrong because lease timing governs addressing and has no influence on when a client decides to roam.

Sample question 2 — Network Security

A firewall sits between the internal network and the internet, and also between the internal network and a segment that hosts a payroll server. Users on the internal network should be able to browse the web, but must not reach the payroll server, and established web sessions must still receive their return traffic. Which rule design satisfies these requirements?

A. A deny rule for the payroll server applied only to outbound traffic, leaving all other traffic unrestricted.
B. A single allow rule from the internal network to any destination, with the payroll server moved outside the firewall.
C. An allow rule for all inbound traffic so web servers can respond, with no outbound restrictions.
D. An explicit allow for outbound web traffic and its established return traffic, followed by an implicit deny-all

Answer: D. Option D is correct. An explicit allow rule permits outbound web traffic and the established return traffic it generates, while a final implicit deny-all rule blocks everything else, including access to the payroll server. Option B is incorrect because an allow rule to any destination would let users reach the payroll server, and moving the server does not address the rule. Option C is incorrect because allowing all inbound traffic exposes the network and still leaves the payroll server reachable. Option A is incorrect because denying only outbound traffic to the payroll server leaves inbound and all other traffic unrestricted.

Sample question 3 — Network Operations

A WAN circuit serving a regional site saturates during month-end processing, and the first sign is always a user complaining that file transfers crawl. Management wants the network team to see the trend developing and to act before the circuit runs out of capacity. Which approach should the team adopt?

A. Run a bandwidth test toward the regional site every morning and record the result in the operations log.
B. Ask the carrier for a monthly utilization report and review it during the network operations meeting.
C. Apply quality of service on the circuit so bulk file transfers rank below interactive traffic in queues.
D. Poll interface counters with SNMP or streaming telemetry, baseline them, and alert on sustained load.

Answer: D. Option D is correct. Counter polling or streaming telemetry produces a continuous record of utilization and errors, and once a baseline exists the team can alert on sustained load and order capacity before month-end fills the circuit. Option A is wrong because a single daily test samples one moment and consumes the bandwidth it is measuring. Option B is wrong because a carrier report describes a month that has already ended, which is later than the complaints the team wants to pre-empt. Option C is wrong because prioritization protects interactive traffic during congestion without giving any early warning that the circuit is filling.

How to use this N10-009 practice set

Answer the 10 free questions without notes. Guessing is more useful than looking the answer up — the wrong answers tell you which domain to revisit.

Read every explanation, including the ones you got right. Note the reasoning for each distractor, not just the correct option.

Drill by domain, starting with Networking Fundamentals (24%), then take a mixed set so you practise switching between topics.

Finish with a timed practice exam. Aim to be consistently above the passing score before you book the real N10-009 exam.

N10-009 practice questions FAQ

How many free N10-009 practice questions can I try?

You can answer 10 N10-009 practice questions free without creating an account. Each one is graded instantly with a written explanation. A free account keeps your progress, and the full bank (800+ questions) unlocks with a subscription.

What topics does the N10-009 exam cover?

The N10-009 exam is organised into 5 domains: Networking Fundamentals (24%), Network Troubleshooting (22%), Network Implementations (19%), Network Security (19%), Network Operations (16%). The weighting above shows how much of the exam each domain represents, so budget study time in the same proportion.

How long is the N10-009 exam and how is it scored?

The N10-009 exam has approximately 90 questions in 90 minutes, with a passing score of 720. Practice sets here are scored the same way as the real exam so you can see whether you are above or below the line before test day.

How should I start studying for CompTIA Network+ (N10-009)?

Start with Networking Fundamentals, the highest-weighted domain, then work down the list. Answer a mixed set after each domain pass — mixing domains forces you to identify what a question is asking before recalling the content, which is what the real exam does.

Are these the same questions that appear on the real N10-009 exam?

No. These are original practice questions written against the published N10-009 exam objectives. They mirror the style, difficulty, and domain weighting of the real exam, but the actual exam content is confidential and is not reproduced here.

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