Chapter 1-4 Certification
Which statement describes a feature of SDRAM?
-It can process overlapping instructions in parallel.
Ir's connector has 184 pins and is able to support two writes and two reads per CPU clock cycle.
DDR SDRAM
It's connector has 240 pins and consumes 1.8 Volts of power.
DDR2 SDRAM
It's connector has 240 pins and consumes 1.5 Volts of power.
DDR3 SDRAM
2. A technician has installed a new second hard drive in a tower computer, but the drive does not show up in the BIOS. What are two things the technician should check first? (Choose two.)
Data and power cables are attached. • The drive port is enabled in the BIOS.
DDR4 SDRAM
It's connector has 288 pins and has advanced error correction features available.
What characteristic best describes a stylus?
pen-like tool that allows input by touching the surface of the screen
A user is building a new computer system. Why would the user select a 24-pin connector?
to attach power to the motherboard
A user is building a new computer system. Why would the user select a straight- through cable?
to connect a device to a wired network
A technician is asked to configure a laptop for LoJack. What will the technician have to do to accomplish this task?
· Enable it in BIOS.
A company is deploying both thin and thick client computers. Which configuration step will a technician need to do on the thin clients that will most likely not be done on the thick clients?
• Connect the computer to the application server.
A technician is installing memory into a computer and notices that there are two black memory slots and two blue memory slots. Which memory technology does this motherboard use?
• dual channel
What characteristic best describes a keyboard?
• the first type of input device used for creating documents and emails
A user is building a new computer system. Why would the user select three hard drives?
• to configure a RAID
A user is building a new computer system. Why would the user select a PCle x16 expansion slot?
• to install a video card
A user is building a new computer system. Why would the user select an RG-6 cable?
• to replace cable TV cabling
A user has the following requirements for a RAID drive: It must be magnetic. It must be fast. It must fit into a standard tower case. Which drive type would meet the user requirements?
•3.5 inch 15K drive
A technician needs to purchase a storage drive that both connects directly to the PCI bus and provides reliability. Which type of storage device would best meet these requirements?
•NVME M.2
What characteristic best describes a KVM switch?
•a device that allows the use of one set of keyboard, mouse, and monitor to control multiple computers
What characteristic best describes a VR headset?
•a head-mounted device that provides head-motion and eye-tracking sensors and displays three-dimensional images
What characteristic best describes an AR headset?
•a head-mounted device that superimposes images and audio over a real world image and can provide users immediate access to information about their real surroundings
What characteristic best describes a joystick?
•an input device for playing games and flight simulation applications
What characteristic best describes a biometric scanner?
•an input device often used to provide secure access to locations or devices by using voice, facial, or fingerprint recognition
What characteristic best describes a flatbed scanner?
•an input device that digitizes an image by placing the document on a flat glass surface and scanning from underneath
What characteristic best describes a signature pad?
•an input device that provides verification of package delivery by digitizing a written name
What characteristic best describes a barcode scanner?
•an input device that reads barcodes affixed to most retail products
What characteristic best describes a magstripe reader?
•an input device that reads encoded information from the back of plastic cards
What characteristic best describes a touch screen?
•an input device that recognizes touch and pressure as instructions
What characteristic best describes a monitor?
•an output device that uses LED, LCD, or OLED technology
What characteristic best describes a projector?
•an output device used to present information from a laptop onto a screen
A user is building a custom computer system and is trying to decide on components for the new system. The user does light to medium graphic design, programming, and gaming. Which two components would be appropriate for this type of machine? (Choose two.)
•dedicated video card • SSD
A user reports that when games are being played, the computer displays random blotches on the screen. What are two possible causes? (Choose two.)
•loose video cable • GPU overheating
A technician is researching how to troubleshoot a computer that reboots randomly. The research suggests that the technician should check the computer for distended capacitors. Where should the technician look for these?
•on the motherboard
A user is building a new computer system. Why would the user select a DVI to VGA adaptor?
•to attach to an analog monitor
A user is building a new computer system. Why would the user select two hard drives?
•to configure a RAID
A user is building a new computer system. Why would the user select a DDR3?
•to install a memory module
A user is building a new computer system. Why would the user select a DDR4?
•to install a memory module
A user is building a new computer system. Why would the user select external screws?
•to install a power supply into a PC tower case
Where would a technician use an RG-6 cable?
•when replacing cable TV cabling
