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CompTIAN10-009
CompTIA Network+
Exam overview, official domain weights and free sample questions. Subscribers get 230 practice questions, 112 flashcards, 7 labs, a study guide and video lessons for this exam.
Exam at a glance
- Exam code
- N10-009
- Questions
- Maximum of 90
- Time
- 90 minutes
- Question types
- multiple choice, performance-based
- Passing score
- 720 on a scale of 100–900
- Exam fee
- not published in readable form on the official page when checked
- Delivery
- not published on the pages checked
- Prerequisites
- Recommended: CompTIA A+ and 9–12 months of hands-on experience as a junior network administrator or network support technician. Not required
- Renewal
- not published on the pages checked. See CompTIA Continuing Education
- Version notes
- Retirement is usually three years after launch (estimated 2027). Launched June 20, 2024
From the official exam page (checked 2026-11-09). Always confirm details with the vendor: official exam page, official objectives.
Domains and weights
Networking Concepts23%
- 1.1 Explain concepts related to the Open Systems Interconnection (OSI) reference model.
- 1.2 Compare and contrast networking appliances, applications, and functions.
- 1.3 Summarize cloud concepts and connectivity options.
- 1.4 Explain common networking ports, protocols, services, and traffic types.
- 1.5 Compare and contrast transmission media and transceivers.
- 1.6 Compare and contrast network topologies, architectures, and types.
- 1.7 Given a scenario, use appropriate IPv4 network addressing.
- 1.8 Summarize evolving use cases for modern network environments.
Network Implementation20%
- 2.1 Explain characteristics of routing technologies.
- 2.2 Given a scenario, configure switching technologies and features.
- 2.3 Given a scenario, select and configure wireless devices and technologies.
- 2.4 Explain important factors of physical installations.
Network Operations19%
- 3.1 Explain the purpose of organizational processes and procedures.
- 3.2 Given a scenario, use network monitoring technologies.
- 3.3 Explain disaster recovery (DR) concepts.
- 3.4 Given a scenario, implement IPv4 and IPv6 network services.
- 3.5 Compare and contrast network access and management methods.
Network Security14%
- 4.1 Explain the importance of basic network security concepts.
- 4.2 Summarize various types of attacks and their impact to the network.
- 4.3 Given a scenario, apply network security features, defense techniques, and solutions.
Network Troubleshooting24%
- 5.1 Explain the troubleshooting methodology.
- 5.2 Given a scenario, troubleshoot common cabling and physical interface issues.
- 5.3 Given a scenario, troubleshoot common issues with network services.
- 5.4 Given a scenario, troubleshoot common performance issues.
- 5.5 Given a scenario, use the appropriate tool or protocol to solve networking issues.
Free sample questions
Original questions in the style of the exam. Pick an answer to see the explanation.
Sample question 1 · Networking Concepts
A technician is troubleshooting a device that forwards packets between subnets based on destination IP addresses. At which OSI layer does this device primarily operate?
Correct — “Layer 3 (Network)”: Routers make forwarding decisions using logical (IP) addresses, which is a Network layer function. Incorrect — “Layer 2 (Data Link)”: Layer 2 devices such as switches forward frames by MAC address within a LAN. Incorrect — “Layer 1 (Physical)”: Layer 1 covers signals, cabling, and connectors. Incorrect — “Layer 4 (Transport)”: Layer 4 handles end-to-end delivery with TCP/UDP ports, not routing between subnets.
Sample question 2 · Network Implementation
A small office has 40 devices with private addresses that all need to reach the internet through a single public IPv4 address. Which technique makes this possible?
Incorrect — “DHCP”: DHCP assigns addresses but doesn't translate them. Incorrect — “802.1Q VLAN trunking”: Trunking carries multiple VLANs over one link and doesn't translate addresses. Incorrect — “Static NAT”: Static NAT maps one private address to one public address. Correct — “PAT (NAT overload)”: PAT maps many private address/port pairs to one public address, tracking sessions by port number.
Sample question 3 · Network Operations
A business decides it can tolerate losing at most 15 minutes of transaction data in a disaster. Which metric does this define?
Correct — “Recovery point objective (RPO)”: RPO is the maximum acceptable data loss measured in time, and it drives backup or replication frequency. Incorrect — “Recovery time objective (RTO)”: RTO is how quickly service must be restored, not how much data can be lost. Incorrect — “Mean time between failures (MTBF)”: MTBF measures average reliability between failures. Incorrect — “Mean time to repair (MTTR)”: MTTR is the average time to fix a failed component.
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