CompTIA Network+ (N10-009)
Practice exam for the CompTIA Network+ N10-009 certification. Covers networking concepts, network implementation, network operations, network security, and network troubleshooting.
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Sample Questions — CompTIA Network+ (N10-009)
5 free sample questions from this practice exam. Correct answers are highlighted.
1. A network technician is explaining the OSI model to a new hire. Which layer of the OSI model is responsible for logical addressing and routing packets between different networks?
2. A network administrator needs to identify which OSI layer is responsible for establishing, managing, and terminating sessions between applications. Which layer should the administrator focus on?
3. During a network audit, a technician discovers that a device is operating at Layer 2 of the OSI model and uses MAC addresses to forward frames within the same network. Which device is being described?
4. A company is deploying a web application that requires encrypted communication. A developer asks which port HTTPS uses by default. What is the correct answer?
5. An administrator needs to configure a server for secure remote management using a command-line interface. Which port must be open on the firewall to allow SSH connections?
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Study Guides & Articles
How to Pass CompTIA Network+ (N10-009) in 2026: Complete Study Guide
CompTIA Network+ N10-009 updated the exam with more focus on cloud networking, zero trust, and SD-WAN. This guide covers all 5 domains, what changed from N10-008, and a 7-week study plan to pass on your first attempt.
Network+ Deep Dive: Subnetting, VLANs, Wireless, and Network Security
The hardest Network+ questions combine subnetting math, VLAN trunk configuration, wireless standards, and security protocols. This guide covers the calculation shortcuts, VLAN tagging (802.1Q), WPA3, IPsec vs SSL VPN, and zero trust architecture — all domains in one comprehensive deep dive.
Network+ Exam Traps: Protocol, Subnetting, and Troubleshooting Questions That Fail Candidates
Network+ candidates lose points on subnetting edge cases, VLAN native port behavior, wireless frequency confusion, and the OSI layer assignment of common protocols. This guide covers 11 traps with the exact scenarios the exam uses.