CompTIA · Exam N10-009

Network+ practice questions built around the decisions the exam tests.

Learn to deploy, operate, secure, and troubleshoot modern wired, wireless, cloud, and hybrid network environments.

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Content reviewed October 2026

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A full-length, timed sitting of Network+ practice questions with no feedback until you submit — the closest thing to sitting the real exam.

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Designed for your next attempt

Preparation with a purpose.

Network technicians, infrastructure specialists, and support professionals preparing to prove vendor-neutral networking and troubleshooting skills.

CertSprint combines targeted practice, explanations, performance-based tasks, and domain-level readiness so each session tells you what to study next.

Complete practice bank

Move beyond the 20-question preview into the full exam-focused bank, organized around the skills and scenarios represented by the current blueprint.

Explanations that teach

See why the right answer fits the evidence and why the distractors fail, so you build judgment instead of memorizing answer patterns.

PBQs and applied scenarios

Practice ordering, matching, investigation, and configuration-style tasks designed to make knowledge usable under exam pressure.

Readiness by domain

Accuracy is mapped to exam areas, exposing weak domains and turning an exam date into a realistic daily practice target.

What you will practice

Coverage that stays focused on Network+.

The experience is designed around relevant decisions and troubleshooting, not disconnected trivia.

  • Network architecture and protocols
  • Routing, switching, wireless, and cloud
  • Operations, security, and troubleshooting

Try three questions. Understand every answer.

Original English practice examples, with answers and explanations available here. No account required. These are independent teaching examples, not official exam questions or exam dumps.

Question 1 of 3 · Network architecture and protocols

Small packets cross a VPN, but larger packets fail. A capture shows that fragmentation is blocked, while the physical links remain healthy. Which investigation best targets the size-dependent failure?

Answer and explanation

Best answer: Path MTU and tunnel overhead

Tunnel overhead reduces available packet size. Examine the path MTU and the handling of packets that exceed it before changing unrelated services.

Why the other choices fit less well

DNS caching, application timeout, and DHCP lease duration do not explain a verified packet-size boundary across the tunnel.

IETF: path MTU discovery

Question 2 of 3 · Networking concepts

Which address belongs to an RFC 1918 private IPv4 range and requires an appropriate gateway or translation arrangement to communicate with the public internet?

Answer and explanation

Best answer: 172.20.14.8

172.20.14.8 lies within 172.16.0.0/12, one of the RFC 1918 private ranges. Private addresses are not globally unique public internet addresses.

Why the other choices fit less well

172.32.14.8 is outside 172.16.0.0–172.31.255.255. 192.169.1.8 is outside 192.168.0.0/16, and 11.0.0.8 is outside 10.0.0.0/8.

IETF: private IPv4 address allocation

Question 3 of 3 · Network troubleshooting

One client cannot resolve an internal hostname. It reaches the service by IP, while another client resolves the same name. Which comparison is most useful first?

Answer and explanation

Best answer: The clients’ configured DNS resolvers and their answers

Compare the resolver configuration and query results on the working and failing clients. This tests the observed name-resolution difference without disrupting a reachable service.

Why the other choices fit less well

Display resolution, window size and keyboard layout do not explain the different DNS responses. Broader infrastructure changes would need additional evidence.

Microsoft: test DNS queries with nslookup

Choose your next step

Free practice questions: 20 for Network+. Create a free account to save your progress. No card required.

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Paid question-bank access is a one-time purchase, with no recurring subscription. Official exam registration, vouchers and provider labs are separate from CertSprint practice.

How the exam works

Know exactly what exam day looks like.

Official format for CompTIA Network+ (N10-009) — confirm current pricing and policy on the vendor's site before you book, since those can change.

Format1 exam
QuestionsUp to 90 questions
Duration90 minutes
Passing score720 (scored on a 100–900 scale)
Question typesMultiple-choice (single and multiple response) plus performance-based questions (PBQs)
DeliveryPearson VUE test center or online proctored (OnVUE)
Retake policyImmediate retake allowed after a first fail; a 14-day wait applies before a third attempt
Study plan

A 5-week plan weighted to the real question bank.

Every week's length is proportional to how many Network+ practice questions that domain actually has — not a generic template. Track real progress against it from your dashboard.

  1. 1

    Networking Concepts

    21% of the full question bank — the single largest block this week.

    ~16 questions/day
  2. 2

    Network Implementation + Network Operations

    Smaller domains grouped together to keep every week substantive.

    ~30 questions/day
  3. 3

    Network Security + Network Troubleshooting

    Smaller domains grouped together to keep every week substantive.

    ~31 questions/day
  4. 4

    Cumulative review

    Mixed practice across every domain, prioritizing whichever ones your readiness tracker shows below 80% accuracy — not a fixed list, but whatever the data says is weakest this week.

  5. 5

    Timed mock exam

    Simulate the real exam: one sitting, the real question count and time limit, no pausing. Re-drill any domain that comes in under 80%.

Start with evidence

Find your weak domains before exam day finds them.

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Practice with perspective

Learn the decision behind the answer.

Work through the scenario, identify the evidence that matters, then compare your reasoning with the explanation. Use domain scores to choose your next study session. A practice percentage is a learning signal, not a prediction or an official exam score.

The newest practice set is available in eight languages. Earlier exercises may appear in English. These are original independent practice scenarios, not official exam questions.