CompTIA Network+ — free practice exam
90 original practice questions aligned to official exam domains. Run a timed, domain-weighted quiz in your browser — no login required.
Exam domains
| Domain | Weight |
|---|---|
| Domain 1: Networking Concepts | 24% |
| Domain 2: Network Implementation | 19% |
| Domain 3: Network Operations | 16% |
| Domain 4: Network Security | 19% |
| Domain 5: Network Troubleshooting | 22% |
Sample practice questions
- Which attack captures DHCP offers to become default gateway?
- Which attack floods a target with traffic to deny service?
- Which authentication factor is a hardware token?
- Which authentication protocol is used with WPA2-Enterprise?
- Which backup type copies only changed blocks since last full?
- BGP session down after firewall change. Likely?
- Which cable management aids airflow in racks?
- Which cable tester result indicates split pair wiring fault?
- Which cable type is immune to EMI for long campus runs?
- Captive portal auth works on Android not iOS. Check?
- Which certificate problem breaks HTTPS trust?
- Which change management step validates rollback?
- Wi-Fi clients connect but captive portal never appears. Check?
- Which configuration management stores device configs centrally?
- Which device operates at Layer 3 and routes between networks?
- Which device terminates many SSL VPN sessions?
- Which DNS monitoring detects hijacking or stale records?
- Which DNS server type holds authoritative zone records?
- Which documentation shows device interconnections and ports?
- Duplicate IP warnings on LAN. Resolution?
- Which email security record helps prevent spoofing?
- Which encapsulation order is correct for TCP/IP stack?
- Which encryption protects Wi-Fi payloads in WPA2-PSK?
- Fiber link flaps every few minutes. Inspect?
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