Learn the basics, then practise
Start with a short round or try all 17 original practice questions. You can learn one answer at a time or take a timed round.
What you will practise
| Networking concepts | 3 questions |
| Addressing | 5 questions |
| Switching | 3 questions |
| Wireless | 2 questions |
| Troubleshooting | 4 questions |
Key ideas to know
- Know how devices use IP addresses and the role of routers and switches.
- Practice recognizing the first checks for a network problem.
- Understand the purpose of DNS, DHCP, VLANs and wireless encryption.
- Do not confuse local networks with the public internet.
Try three sample questions
What is the usual job of a router?
Answer: Forward traffic between networks
Routers choose paths for packets moving between IP networks.
Which device mainly connects devices within one LAN?
Answer: Network switch
Switches connect local devices using network frames.
What does DHCP commonly provide?
Answer: IP configuration automatically
DHCP assigns network settings such as an IP address and gateway.
Official exam resources
Check the official source: CompTIA Network+ certification ↗
Short independent review, not a complete N10-009 exam simulator.