20+ practice questions focused on Network Troubleshooting — one of the most tested topics on the CompTIA A+ Core 1 220-1201 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Network Troubleshooting PracticeDuring a site survey, a technician finds that users in the break room experience very slow Wi-Fi while those in offices nearby have excellent speeds. What is the most likely cause?
Explanation: This scenario tests knowledge of wireless interference sources. Microwaves operate at 2.4 GHz, which is the same frequency band used by many Wi-Fi networks, causing significant interference and performance degradation.
A technician is troubleshooting a network where users can access the internet but cannot reach a specific internal web server by its hostname. Pinging the server's IP address works. What is the most likely issue?
Explanation: This question tests DNS resolution. If the IP works but the hostname does not, the problem is with DNS—either the server's A record is missing or the DNS server is not responding for that zone.
A user's laptop cannot connect to any network after a recent OS update. The Wi-Fi adapter shows as enabled in Device Manager with no errors, and other devices on the same network work fine. What should the technician do first?
Explanation: This question tests systematic troubleshooting. Since the hardware appears fine and other devices work, the issue is likely software-related. Checking IP configuration with ipconfig is the logical first step to see if the adapter has a valid IP or is stuck with an APIPA address.
A user reports that their VoIP phone works but the PC connected to the phone's passthrough port has no network access. What should the technician check first?
Explanation: This question tests understanding of VoIP passthrough ports. The PC's lack of connectivity is often due to a faulty or unseated Ethernet cable between the phone and PC. The phone itself is working, so the upstream connection is fine.
After deploying a new 802.11ac access point, users report that some devices can connect but others cannot, even though they are in the same room. All devices support 5 GHz. What is the most likely cause?
Explanation: This scenario tests knowledge of wireless standards and band compatibility. 802.11ac operates only on 5 GHz. If the access point is configured to use only 5 GHz, older devices that only support 2.4 GHz will not connect, but 5 GHz-capable devices will.
+15 more Network Troubleshooting questions available
Practice all Network Troubleshooting questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Network Troubleshooting. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Network Troubleshooting questions on the 220-1201 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Network Troubleshooting is tested as part of the CompTIA A+ Core 1 220-1201 blueprint. Practicing with targeted Network Troubleshooting questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free 220-1201 practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but Network Troubleshooting is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
Launch a full Network Troubleshooting practice session with instant scoring and detailed explanations.
Start Network Troubleshooting Practice →