It-essentials v7.0 Chapter 1-4 Checkpoint Exam Answers
1. 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*
integrated CPU
SSD*
high speed mechanical drive
maximum CPU cores
Explanation: Both a gaming and graphic design computer should have an SSD and high-end video card. The computer should have a multicore CPU, but this computer does not require the maximum number of cores that a virtualization computer would need.
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.)
The drive has been partitioned.
The drive works in another computer.
Data and power cables are attached.*
The drive port is enabled in the BIOS.*
The power supply outputs enough wattage.
Explanation: If the BIOS cannot detect a drive, either the port is disabled in the BIOS or the cables are not attached securely. A tower computer can typically have a second hard drive installed without any power issues. The drive cannot be partitioned or formatted until the BIOS recognizes it.
3. A user reports that when games are being played, the computer displays random blotches on the screen. What are two possible causes? (Choose two.)
bad inverter
loose video cable*
failing LCD backlight
GPU overheating*
failing power supply
Explanation: Artifacts such as dots, lines, or patterns on a screen are typically caused by a failing video card, an underpowered or overheated GPU, a loose video cable, overclocked CPU, or outdated video driver.
4. 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?
DDR4
dual channel*
ECC
parity
Explanation: Motherboards that support dual channel frequently color the memory slots so the technician knows to populate the same color slots with a matching pair of memory modules.
5. 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?
5 inch 15K drive*
BD-RE
NVMe
SSD
Explanation: A 3.5 inch drive is commonly used in a tower computer. 15 K is commonly used to represent 15,000 rpm drives which are very fast magnetic drives. Blu-ray drives are not used in a RAID configuration. SSD and NVMe use flash memory and are not mechanical drives.
6. 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?
Install additional RAM.
Install local applications.
Connect the computer to the LAN.
Connect the computer to the application server.*
Explanation: A thick client is a normal corporate workstation. A thin client is usually a monitor, keyboard, mouse, and a computer with few or no ports and no hard drive. A thin client runs applications and possibly even the operating system from a centralized device such as a server. A corporate technician commonly uses imaging software to install both, but a thin client requires the technician to make the connection to an application server.
7. 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?
under the CPU
on the motherboard*
on the memory module
within the power supply
Explanation: Distended capacitors are motherboard components that look like they are bulging. They can leak and cause motherboard issues.
8. Where would a technician use an RG-6 cable?
when attaching a PC to a LAN
when replacing cable TV cabling*
when connecting a display to a PC
when attaching an external hard drive
Explanation: RG-6 is a type of coaxial cable used in cable TV installations.
9. 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.*
Install antimalware software.
Perform special steps on the hard drive using the Disk Management tool.
Attach a physical cable through a special hardware loop that is part of the computer case.
Explanation: LoJack is a security option that can be enabled and used to track a stolen device such as a laptop.
10. A technician needs to purchase a storage drive that both connects directly to the PCIe bus and provides reliability. Which type of storage device would best meet these requirements?
5″ HDD
5″ SSD
tape drive
NVMe M.2 *
Explanation: An NVMe M.2 device is a type of SSD that attaches to the PCIe bus without requiring SATA connectors or special drivers.
11. 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*
to install an EEPROM
to diminish any electrostatic charge
to attach an external HD
12. A user is building a new computer system. Why would the user select a 24-pin connector?
to attach power to the motherboard*
to replace a heatsink
to diminish any electrostatic charge
to attach an external HD
13. A user is building a new computer system. Why would the user select two hard drives?
to configure a RAID*
to share input devices between two monitors
to attach a laser printer
to attach a VR headset
14. A user is building a new computer system. Why would the user select three hard drives?
to configure a RAID*
to share input devices between two monitors
to attach a laser printer
to attach a VR headset
15. A user is building a new computer system. Why would the user select a DVI to VGA adaptor?
to attach to an analog monitor*
to connect a Bluetooth device
to attach a laser printer
to attach a VR headset
16. A user is building a new computer system. Why would the user select an RG-6 cable?
to replace cable TV cabling*
to install a GRU
to attach a laser printer
to attach a VR headset
17. A user is building a new computer system. Why would the user select a PCIe x16 expansion slot?
to install a video card*
to install a GRU
to attach a laser printer
to attach a VR headset
18. A user is building a new computer system. Why would the user select a DDR3?
to install a memory module*
to diminish any electrostatic charge
to attach a laser printer
to attach a VR headset
19. A user is building a new computer system. Why would the user select a DDR4?
to install a memory module*
to attach an external HD
to attach a laser printer
to configure a gaming console
20. 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*
to attach an external HD
to configure a gaming console
to diminish any electrostatic charge
21. 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*
an input device often used to provide secure access to locations or devices by using voice, facial, or fingerprint recognition
an input device allowing users to pay for a product by tapping their credit card or smartphone on another device
an input device that reads barcodes affixed to most retail products
22. What characteristic best describes a projector?
an output device used to present information from a laptop onto a screen*
an input device allowing users to pay for a product by tapping their credit card or smartphone on another device
an input device that reads barcodes affixed to most retail products
an input device that reads encoded information from the back of plastic cards
23. What characteristic best describes a touch screen?
an input device that recognizes touch and pressure as instructions*
an input device often used to provide secure access to locations or devices by using voice, facial, or fingerprint recognition
an input device allowing users to pay for a product by tapping their credit card or smartphone on another device
an input device that reads barcodes affixed to most retail products
24. 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*
an input device allowing users to pay for a product by tapping their credit card or smartphone on another device
an input device that reads barcodes affixed to most retail products
an input device that reads encoded information from the back of plastic cards
25. What characteristic best describes a stylus?
a pen-like tool that allows input by touching the surface of the screen*
an input device often used to provide secure access to locations or devices by using voice, facial, or fingerprint recognition
an input device allowing users to pay for a product by tapping their credit card or smartphone on another device
an input device that reads barcodes affixed to most retail products
26. 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*
an input device that provides verification of package delivery by digitizing a written name
an output device used to present information from a laptop onto a screen
an output device that uses LED, LCD, or OLED technology
27. What characteristic best describes a magstripe reader?
an input device that reads encoded information from the back of plastic cards*
an input device that provides verification of package delivery by digitizing a written name
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
an output device used to present information from a laptop onto a screen
28. What characteristic best describes a signature pad?
an input device that provides verification of package delivery by digitizing a written name*
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
an output device used to present information from a laptop onto a screen
an output device that uses LED, LCD, or OLED technology
29. What characteristic best describes a keyboard?
the first type of input device used for creating documents and emails*
an input device that provides verification of package delivery by digitizing a written name
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
an output device used to present information from a laptop onto a screen
30. What characteristic best describes a barcode scanner?
an input device that reads barcodes affixed to most retail products*
an input device that provides verification of package delivery by digitizing a written name
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
an output device used to present information from a laptop onto a screen
