CNT 104 Final Exam Flashcards
In which situation would an ESD strike potentially cause harm to the PC?
-when replacing a mechanical hard drive with an M.2 SSD
-when installing an additional display in a workplace cubicle
-when using a grounded mat and working on a computer on an ungrounded workbench
-when installing a dual-voltage power supply
when replacing a mechanical hard drive with an M.2 SSD
In which situation would an ESD strike potentially cause harm to the PC? (Other case)
-when installing an additional display in a workplace cubicle
-when replacing high voltage laser printer parts
-while attaching speakers to a surround sound card
-when installing RAM
when installing RAM
A person has started a new technical job. In which situation would ESD be an issue?
-when installing a processor
-when using a grounded mat and working on a computer on an ungrounded workbench
-when installing a dual-voltage power supply
-while exchanging one laptop AC adapter with one that is not from the original equipment manufacturer
when installing a processor
A person has started a new technical job. In which situation would ESD be an issue?
Other case
when installing RAM
when installing an additional display in a workplace cubicle
when replacing high voltage laser printer parts
while attaching speakers to a surround sound card
when installing RAM
A technician is about to begin preventive maintenance on a company PC. In which situation would ESD be an issue?
when replacing a motherboard
while attaching speakers to a surround sound card
when using a grounded mat and working on a computer on an ungrounded workbench
when installing a dual-voltage power supply
when replacing a motherboard
An instructor has given a student an assignment to assemble a PC. In which situation should the student be aware that ESD is an issue?
when installing RAM
when working in a corporate environment that has carpet installed under tower PCs
when using a grounded mat and working on a computer on an ungrounded workbench
when installing a dual-voltage power supply
when installing RAM
An instructor has given a student an assignment to assemble a PC. In which situation should the student be aware that ESD is an issue? Other Case
when walking across a carpeted area and
then touching a keyboard that is attached to a tower PC
when installing a UPS
when working in a corporate environment that has carpet installed under tower PCs
when replacing a mechanical hard drive with an M.2 SSD
when replacing a mechanical hard drive with an M.2 SSD
What two motherboard components control the system boot operations? (Choose two.)
BIOS chip
UEFI chip
Northbridge chip
Southbridge chip
CPU
Bios Chip and UEFI chip
explanation: System boot services are provided by the motherboard BIOS and UEFI chips
A technician is upgrading an ATX motherboard with another ATX motherboard. Which component might be affected by this and need to be upgraded and bought as an additional purchase?
BIOS
chipset
CMOS battery
CPU
PCIe adapter
CPU
Explanation: The motherboard, CPU, and power supply must be compatible.
A customer has requested that a PC be built that will support eSATA. Which component should be checked to be sure that this feature is supported?
CPU
chipset
hard disk
RAM module
chipset
Explanation: The chipset on a motherboard consists of integrated circuits that control how system hardware interacts with the CPU and motherboard. It also provides the capability and features needed, such as the maximum memory supported on the motherboard, multiple USB ports, eSATA connections, surround sound, and video.
Which memory module used to hold instructions for booting a PC and loading the OS, but is still used on adapters even though the memory contents cannot be changed?
RAM
ROM
cache
main memory
ROM
explanation: ROM stands for Read only memory
What is a characteristic of DDR SDRAM?
It transfers data twice per clock cycle compared to once per clock cycle for SDRAM.
DDR SDRAM modules have double the number of pins of SDRAM memory modules.
It is dynamic memory whereas SDRAM is static memory.
It operates at double the voltage of SDRAM memory.
It transfers data twice per clock cycle compared to once per clock cycle for SDRAM.
Explanation: DDR SDRAM transfers data twice per clock cycle, whereas SDRAM transfers data once each clock cycle. Both DDR SDRAM and SDRAM are forms of dynamic memory. The difference in data transfer rate between DDR SDRAM and SDRAM is not determined by the number of pins, nor the operating voltage.
What are two safety hazards when dealing with laser printers? (Choose two.)
high voltage
hot components
heavy metals
proprietary power bricks
unwieldy card cages
high voltage
hot components
Explanation: Laser printers require high voltage when initially powered on and to charge the drum in preparation for writing data to the drum. This high voltage requirement is why most laser printers are not normally connected to a UPS. A laser printer also has a fuser assembly used to apply heat and pressure to the toner to permanently attach it to the paper. The laser printer must be unplugged and the fuser assembly must be allowed to cool before working inside the printer.
Which component requires a technician to install screws externally through the PC case?
RAM
CPU
motherboard
power supply
power supply
Explanation: The power supply commonly has four screws that attach from outside the case through case holes into screw holes on the power supply.
A technician is installing an internal HDD. To which motherboard connector will the technician connect the data cable?
ATX
PCI
PWR_SW
SATA
SATA
Explanation: Internal hard drives are commonly SATA drives that have a data cable that extends from the drive to a motherboard SATA connector..
