CompTIA exam questions
A technician is troubleshooting a desktop system that is shutting down randomly after short time periods. After accessing the system BIOS, the technician checks various data from the motherboard sensors. Which of the following would indicate an issue with the system?
A. The hard drive temperature is 30?Celsius
B. Power supply is providing +12v and +5v
C. CPU fan RPM value is 0
D. The number of physical processors value is 1
A Pentium 4 PC has a dead power supply. This power supply has a characteristic that must be found in the replacement power supply. Which of the following describes this characteristic?
A. The new supply must have a 20 pin Molex cable.
B. The supply must have the same size cooling fan.
C. The new supply must have a 6 pin Molex cable.
D. The supply must have a 4 pin Molex cable.
Which of the following connectors is found on every desktop power supply?
A. Berg
B. SATA
C. PCIe
D. Molex
Which of the following will provide the BEST protection against power failures and data loss?
A. Auto-switching power supply
B. Uninterruptible power supply
C. Line conditioner
D. Surge suppressor
A technician needs to replace a desktop computer’s power supply. Which of the following should the technician do FIRST?
A. Check for environmental concerns
B. Review local regulations for disposal procedures
C. Read MSDS documentation
D. Remove watch and all jewelry
A customer is building a high-end gaming PC and is seeking an appropriate power supply unit. Which of the following feature-sets of a power supply should be installed? (Select THREE).
A. Mini-ITX form factor
B. High number of connectors
C. 24-pin main connector
D. 20-pin main connector
E. 350-450 watts of power
F. Dual 12v rails
Peter wants to purchase a computer for use in his family’s home theater and asks for advice. Which of the following should be the FIRST priority in Peter’s new computer?
A. Maximum RAM and CPU cores
B. High-end cooling and very powerful fans
C. High wattage power supply and large case
D. Surround sound audio and HDMI output
A technician is advised that a laptop battery is no longer charging. Which of the following is the BEST way to begin diagnostic testing for a battery?
A. Unplug the power supply from the laptop.
B. Reboot into the BIOS.
C. Test the battery with a multimeter.
D. Remove the battery and run on AC power.
A technician has upgraded the BIOS of a system that is running with multiple hard drives. Afterward, the system will not boot and displays an error message “Operating system not found”. Which of the following is the FIRST thing the technician should inspect?
A. The hard drive type settings in the BIOS
B. The power supply connections to the hard drives
C. The boot sequence settings in the BIOS
D. The motherboard SATA connectors
A technician replaces a failed hard drive with a brand new one. The technician boots from a PE CD and attempts to install a custom OS build deployed from the network. The hard drive is visible in the system’s BIOS. However, once in the preinstallation environment, the drive is not recognized in the imaging process and the process fails. Which of the following is MOST likely the cause of failure?
A. The boot CD has failed and needs to be replaced.
B. The hard drive needs to have its configuration manually defined in the BIOS.
C. The PC’s power supply is not providing enough power to the new hard drive.
D. The hard drive has not been partitioned correctly.