CompTIA A+ Core 2 Practice Questions: Hardware and Network Troubleshooting

10 free, exam-style CompTIA A+ Core 2 (220-1102) practice questions covering Hardware and Network Troubleshooting. Each question shows the correct answer and a clear explanation. Ready for the real thing? Take the full timed quiz below.

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Q1. A user reports their desktop PC makes a continuous series of short beeps upon startup and does not display anything on the monitor. This MOST likely indicates a problem with which component?

Explanation: Continuous short beeps or a repeating pattern of short beeps often indicate a RAM (memory) issue or sometimes a power supply problem, preventing the system from completing POST. Learn more.

Q2. A technician is troubleshooting a network connection and suspects a faulty patch cable. Which tool would be BEST to confirm this suspicion?

Explanation: A cable tester can check for continuity, shorts, crossed pairs, and other physical faults in an Ethernet patch cable. Learn more.

Q3. A laptop's display is completely black, but the power light is on, and fan noise can be heard. Connecting an external monitor produces a valid display. What is the MOST likely failed component in the laptop?

Explanation: If an external monitor works, the GPU is likely functional. The problem is likely with the laptop's internal display assembly (LCD/LED panel itself) or the cable connecting it to the motherboard. Learn more.

Q4. An inkjet printer is producing pages with smudged ink. Which of the following is a likely cause?

Explanation: Using paper that is not suitable for inkjet printing (e.g., some glossy photo papers not designed for the printer's ink) or incorrect paper type settings can lead to ink not drying properly and smudging. Learn more.

Q5. A user's Windows PC is configured to obtain an IP address automatically but is unable to connect to the network. `ipconfig` shows an IP address of 169.254.x.x. What does this indicate?

Explanation: An IP address in the 169.254.x.x range indicates that the PC is using APIPA (Automatic Private IP Addressing) because it could not reach a DHCP server to obtain a valid IP configuration. Learn more.

Q6. A user complains that their laser printer is leaving ghost images or repeating patterns down the page. This issue is MOST likely related to a problem with the:

Explanation: Ghosting or repetitive defects often point to an issue with the imaging drum not being properly cleaned after a rotation, or a problem with the fuser not correctly setting the previous image. Learn more.

Q7. A user accidentally spills liquid on their laptop keyboard. After immediately powering off and disconnecting power, what is the recommended FIRST step?

Explanation: Immediately turning the laptop upside down helps prevent liquid from seeping deeper into components. It should then be left to air dry for an extended period (e.g., 24-48 hours) before attempting to power on. Using heat can cause further damage. Learn more.

Q8. When troubleshooting a 'no display' issue on a desktop PC, after checking power and cable connections, what is a common next step?

Explanation: If basic cable checks don't resolve a 'no display' issue, reseating components like RAM and the graphics card can often fix problems caused by loose connections or oxidation on the contacts. Learn more.

Q9. A user reports that their new wireless mouse is not working. The mouse has fresh batteries and is turned on. What is the MOST likely first troubleshooting step?

Explanation: For non-Bluetooth wireless mice, ensuring the USB dongle is securely connected is crucial. For Bluetooth mice, checking the pairing status is the first step. Learn more.

Q10. Which of the following is a common hardware tool used to check if AC or DC voltage is present in a power supply or at a wall outlet?

Explanation: A multimeter can measure various electrical properties, including AC/DC voltage, current, and resistance, making it essential for diagnosing power issues. Learn more.

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