Free CompTIA Network+ (N10-009) practice test
The CompTIA Network+ (N10-009) tests networking concepts, implementation, operations, security, and troubleshooting. This site gives you 315 original practice questions and 19 performance-based questions for it, free and without an account: adaptive drills with an explanation after every answer, and a full 90-minute exam simulation with 50 questions plus 3 PBQs on the real 100 to 900 scale.
Network+ leans hard on applied skills: reading topology diagrams, knowing ports cold, and working subnetting under time. The PBQ lab here simulates those formats, including a command-line terminal and clickable network diagrams. Every topic links to the matching free Professor Messer video.
What N10-009 covers
| N10-009 domain | Exam weight |
|---|---|
| 1.0 Networking Concepts | 23% |
| 2.0 Network Implementation | 20% |
| 3.0 Network Operations | 19% |
| 4.0 Network Security | 14% |
| 5.0 Network Troubleshooting | 24% |
Real exam facts: up to 90 questions, 90 minutes, passing score 720 on the 100 to 900 scale.
Try three sample questions
Sample question 1 · N10-009 · Concepts
Which OSI layer is responsible for logical addressing and routing between different networks?
- ALayer 3 (Network)
- BLayer 2 (Data Link)
- CLayer 4 (Transport)
- DLayer 7 (Application)
Show answer and explanation
A. Layer 3 (Network)
Layer 3, the Network layer, handles logical (IP) addressing and routing between networks.
Sample question 2 · N10-009 · Ports
Which port does HTTPS use for encrypted web traffic?
- A443
- B80
- C22
- D25
Show answer and explanation
A. 443
HTTPS uses TCP port 443; HTTP uses port 80.
Sample question 3 · N10-009 · Standards
Which Ethernet standard provides 1 Gbps over twisted-pair copper?
- A1000BASE-T
- B10BASE-T
- C100BASE-TX
- D10GBASE-SR
Show answer and explanation
A. 1000BASE-T
1000BASE-T delivers 1 Gbps over Cat 5e or better copper up to 100 meters.
Common questions
How many questions are on the Network+ exam?
The N10-009 exam has a maximum of 90 questions in 90 minutes, combining multiple choice and performance-based questions. The passing score is 720 on a 100 to 900 scale.
Do I need A+ before Network+?
No, A+ is recommended but not required. If you already work with networks or are comfortable with hardware basics, starting at Network+ is common and completely allowed.
What topics does N10-009 cover?
Five domains: networking concepts (23%), network implementation (20%), network operations (19%), network security (14%), and network troubleshooting (24%). Our drills track your accuracy in each domain separately.
Are these real exam questions?
No. Every question is original, written to the N10-009 objectives. Each one links to the free Professor Messer video for its topic, so a miss turns into a study plan.