CompTIA A+ Domain 5: Hardware and Network Troubleshooting Welcome to your CompTIA A+ Domain 5: Hardware and Network Troubleshooting 1. CompTIA A+: Hardware and Network Troubleshooting What is the most likely cause of intermittent connectivity issues in a wireless network, assuming the signal strength is strong? A. Faulty Ethernet cable B. Router firmware out of date C. Incorrect subnet mask D. Overlapping Wi-Fi channels None 2. CompTIA A+: Hardware and Network Troubleshooting In a PC, which component should be checked first when the system powers on but fails to complete the POST (Power-On Self Test)? A. Hard drive B. RAM C. Operating system D. Graphics card None 3. CompTIA A+: Hardware and Network Troubleshooting What tool is most effective for testing the physical integrity of an Ethernet cable? A. Multimeter B. Cable certifier C. TDR (Time-Domain Reflectometer) D. Network sniffer None 4. CompTIA A+: Hardware and Network Troubleshooting When troubleshooting a PC that suddenly shuts down, what should be checked first? A. CPU temperature B. Hard drive health C. RAM stability D. Power supply unit (PSU) None 5. CompTIA A+: Hardware and Network Troubleshooting Which of the following is a common symptom of a failing power supply unit (PSU) in a computer? A. Distorted display B. Slow operating system C. Random system restarts D. Inconsistent mouse movement None 6. CompTIA A+: Hardware and Network Troubleshooting In a scenario where a laptop connects to a Wi-Fi network but has no internet access, what is the first setting to check? A. Wireless mode compatibility B. Firewall settings C. DNS server configuration D. System date and time None 7. CompTIA A+: Hardware and Network Troubleshooting What is the most likely cause of a 'No Signal' message on a monitor when a computer is powered on? A. Faulty monitor B. Incompatible RAM C. Disconnected or faulty video cable D. Corrupt operating system None 8. CompTIA A+: Hardware and Network Troubleshooting Which tool is essential for safely troubleshooting a power supply unit (PSU) in a desktop computer? A. Phillips head screwdriver B. PSU tester C. ESD (Electrostatic Discharge) wrist strap D. Multimeter None 9. CompTIA A+: Hardware and Network Troubleshooting What is the most likely reason for a network printer to be accessible but unable to print? A. Incorrect IP address B. Full print queue C. Depleted toner or ink D. Misconfigured duplex setting None 10. CompTIA A+: Hardware and Network Troubleshooting In a laptop, repeated failure to recognize an inserted USB device most likely indicates a problem with what? A. The USB device driver B. The operating system C. The USB port D. The motherboard None 11. CompTIA A+: Hardware and Network Troubleshooting What is the primary reason for a computer displaying the error message "Operating System Not Found" on boot? A. Corrupted BIOS B. Defective RAM C. Unresponsive CPU D. Missing or faulty boot device None 12. CompTIA A+: Hardware and Network Troubleshooting In troubleshooting a network issue, which tool is used to trace the path a packet takes from the source to the destination? A. netstat B. ping C. traceroute D. nslookup None 13. CompTIA A+: Hardware and Network Troubleshooting When a computer's fan is constantly running at high speed, even under low load conditions, what should be checked first? A. Power supply unit B. Hard drive health C. CPU usage D. Thermal paste application None 14. CompTIA A+: Hardware and Network Troubleshooting What tool is commonly used to test the output voltage of each connector on a power supply unit (PSU) in a computer? A. Oscilloscope B. PSU tester C. Multimeter D. Powerline tester None 15. CompTIA A+: Hardware and Network Troubleshooting Which of the following issues is most likely indicated by a 'Double Beep' sound during a computer's boot process? A. Overheating CPU B. RAM failure C. Graphics card malfunction D. Hard drive error None 16. CompTIA A+: Hardware and Network Troubleshooting What is the primary function of a loopback plug when troubleshooting network issues? A. Testing the throughput of a network cable B. Checking the functionality of a network port C. Measuring the length of a network cable D. Identifying the type of network cable None 17. CompTIA A+: Hardware and Network Troubleshooting In a scenario where a PC starts but the BIOS screen is not displayed, which component is most likely at fault? A. RAM B. CPU C. Graphics card D. Hard drive None 18. CompTIA A+: Hardware and Network Troubleshooting When troubleshooting a network issue, what does a "Request Timed Out" message in a ping test typically indicate? A. The destination host is down. B. The network cables are faulty. C. There is high network congestion. D. There's a connectivity issue preventing the packets from reaching the destination. None 19. CompTIA A+: Hardware and Network Troubleshooting What would be the first step in troubleshooting a PC that beeps continuously when powered on but does not display anything on the screen? A. Check the video cable connection. B. Replace the motherboard. C. Test the RAM modules. D. Update the BIOS. None 20. CompTIA A+: Hardware and Network Troubleshooting In a situation where a computer's hard drive is making a loud clicking noise, what is the most likely issue? A. The hard drive is fragmented. B. The hard drive is overheating. C. There is physical damage to the hard drive. D. The SATA/IDE cable is loose. None 1 out of 20 Time is Up! Time's up
