CNT 104 Final Exam Flashcards
(22 cards)
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..
Refer to the exhibit. A technician has been asked to install a video card. Which section of the motherboard will the technician use to install the card?
There was an image of a motherboard and other compotents in it.
section A
section B (Sata ports)
section C (ram slots)
section D
section D
Explanation: Graphics cards, also known as video cards, are installed into a PCIe x16 expansion slot. The expansion slots on a motherboard are located near the motherboard ports.
When a PC is being assembled, what component is connected to the motherboard with a SATA cable?
the optical drive
the network interface card
the video card
the power supply
the optical drive
Explanation: SATA cables, or serial ATA cables, are used to carry data from drives to the motherboard.
A technician is troubleshooting a computer that is experiencing hardware failure detected by the BIOS. What is one way this failure is indicated?
The computer automatically boots into Safe Mode and displays a warning on the screen.
The screen flashes with a red background and displays a warning message.
The computer emits a pattern of beeps indicating the failing device.
The computer returns an error message that indicates the I/O address of the failing device.
The computer emits a pattern of beeps indicating the failing device.
Explanation: Beep codes are a result of POST and these vary between computer vendors based on what BIOS is installed.
Which three features can be configured in the BIOS settings to secure a computer? (Choose three.)
MAC filtering
drive encryption
TPM
file encryption
TKIP key
passwords
drive encryption
tpm
passwords
Explanation: Passwords, drive encryption, and TPM are BIOS configurable security features. File encryption, TKIP key, and MAC filtering are security features not configured within BIOS.
What is the purpose of RAID adapters?
to allow older PCI technology expansion slots to be used
to provide enhanced audio and graphic capabilities
to connect multiple storage devices for redundancy or speed
to connect peripheral devices to a PC to improve performance
to connect multiple storage devices for redundancy or speed
Explanation: RAID 0 allows “striping” or writing data across two hard drives, but provides no redundancy. The other RAID versions provide redundancy.
When a new motherboard is being installed, between which two components must thermal compound be applied? (Choose two.)
CPU
RAM
chassis
heat sink
chipset
motherboard
CPU
Heat sink
Explanation: You must apply thermal compound between the new CPU and the heat sink/fan assembly to avoid overheating the CPU. The thermal paste helps to conduct heat from the CPU to the heat sink.
What is the purpose of a Safety Data Sheet?
to specify procedures for dealing with potentially hazardous materials
to specify procedures in designing and building common computer systems
to specify procedures for the operation of sensitive components and prevention of electrostatic discharge
to specify procedures in the use of humidity control and prevention of moisture damage
to specify procedures for dealing with potentially hazardous materials
Explanation: A Safety Data Sheet is a fact sheet that summarizes information about material identification, including hazardous ingredients that can affect personal health, fire hazards, and first-aid requirements. The SDS explains how to dispose of potentially hazardous materials in the safest manner.
