Full exam simulation
90 questions · 90 minutes, 0 unscored and not identified. One question per screen, flag and strike-out, a review screen and a score report per domain — no answers until you finish.
CompTIAN10-009AssociateNetworking · Core · V9Available
CompTIA Network+
Design, implement, operate, secure and troubleshoot wired and wireless networks — subnetting, routing, switching, services and tools.
Independent practice — not affiliated with or endorsed by CompTIA. N10-009 is used only to identify the exam. Trademark notices
CompTIA estimates retirement in 2027 (usually three years after the June 20, 2024 launch).
Domain weights
Share of scored content per domain. Every sitting draws questions by these weights.
- D1Networking Concepts23 %29 concepts
- D2Network Implementation20 %20 concepts
- D3Network Operations19 %19 concepts
- D4Network Security14 %15 concepts
- D5Network Troubleshooting24 %26 concepts
Your progress
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ESL +30
The full sitting with 30 extra minutes (120 min) — the accommodation non-native English speakers can request for exams in English.
Quick 20
20 questions · 20 min, same weights, all scored. A daily check.
Weak spots
20 questions aimed at your weakest domains, missed concepts and due reviews.
Practice builder
Pick domains, topics, how many questions and which pool (new, wrong, due, low confidence). Spaced repetition with confidence ratings, flashcards and a mistake book.
Open practiceDomain drill
One domain, up to 20 questions.
What's on the exam
Domain 1: Networking Concepts
23 %The OSI model, network appliances, cloud networking, ports and protocols, traffic types, media and connectors, topologies, and IPv4 addressing and subnetting.
Practice domain 1 →Domain 2: Network Implementation
20 %Static and dynamic routing, NAT/PAT and FHRP, switching (VLANs, spanning tree, MTU), wireless configuration and physical installation factors.
Practice domain 2 →Domain 3: Network Operations
19 %Documentation, life-cycle and change management, monitoring (SNMP, flow data, logs), disaster recovery metrics, network services (DHCP, DNS, NTP) and remote access.
Practice domain 3 →Domain 4: Network Security
14 %Logical and physical security, authentication and AAA, common attacks, segmentation, device hardening, NAC and ACLs.
Practice domain 4 →Domain 5: Network Troubleshooting
24 %The troubleshooting methodology, cabling and interface issues, network service problems, performance issues and command-line tools.
Practice domain 5 →
Domain names and weights come from the official N10-009 exam objectives (checked 2026-10-26). Always check it for the authoritative scope.
Includes 16 performance-style items (put in order, match, read an exhibit) — practice them with the “Order / match” filter.
The real exam's full performance-based simulations (labs in a live interface) are not reproduced.
Sources · checked 2026-10-26
Sample questions
Two of this exam's original questions, with the explanation you get after every answer.
Sample 1Select one
A technician says a problem is at Layer 3 of the OSI model. Which function works at that layer?
- ALogical addressing and routing between networks
- BFraming and MAC addressing on the local segment
- CReliable delivery with sequencing and acknowledgments
- DEncoding bits as electrical or optical signals
Show answer & explanation
Correct: A. Layer 3, the network layer, handles logical (IP) addresses and routing. MAC addressing is layer 2, reliable delivery belongs to the layer 4 transport protocol TCP, and signalling is layer 1.
Sample 2Select 2
A firewall must allow encrypted web traffic and secure remote shell access. Which TWO ports should be opened? (Select TWO.)
- ATCP 23
- BTCP 22
- CTCP 80
- DUDP 161
- ETCP 443
Show answer & explanation
Correct: B, E. HTTPS uses TCP 443 and SSH uses TCP 22. Telnet on port 23 and HTTP on port 80 are unencrypted, and UDP 161 is SNMP.