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IT Essentials (Version vii.00) – It Essentials seven.0 Chapter one exam Answers

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Version 7:

one. A customer comes into a computer parts and service store. The customer is looking for a device to assistance a person with accessibility problems input instructions into a laptop by using a pen. What device should the shop owner recommend to reach the required job?

• stylus
• biometric scanner
• keyboard
• NFC device

2. A customer comes into a calculator parts and service store. The customer is looking for a device to provide secure admission to the central server room using a retinal scan. What device should the shop possessor recommend to accomplish the required task?

• biometric scanner
• keyboard
• NFC device
• flatbed scanner

iii. A customer comes into a computer parts and service store. The customer is looking for a device to aid when repairing an aeroplane and that will permit the customer to see and interact with the repair manual at the aforementioned time. What device should the shop possessor recommend to accomplish the required task?

• AR headset
• biometric scanner
• keyboard
• NFC device

four. A client comes into a computer parts and service store. The client is looking for a device to manually input text for a new networking textbook that the customer is writing. What device should the store owner recommend to accomplish the required task?

• keyboard
• biometric scanner
• NFC device
• flatbed scanner

5. A client comes into a computer parts and service store. The client is looking for a device to let secure admission to the main doors of the company past swiping an ID carte du jour. What device should the store possessor recommend to accomplish the required task?

• magstripe reader
• biometric scanner
• keyboard
• NFC device

6. A client comes into a computer parts and service store. The customer is looking for a device to allow users to tap and pay for their purchases. What device should the store owner recommend to reach the required job?

• NFC device
• joystick or gamepad
• projector
• magstripe reader

7. A client comes into a reckoner parts and service shop. The customer is looking for a device to allow secure access to the chief doors of the company by swiping an ID card. What device should the store owner recommend to accomplish the required task?

• magstripe reader
• joystick or gamepad
• projector
• AR headset

eight. A customer comes into a calculator parts and service shop. The customer is looking for a device to display a promotional presentation to a large audience at a conference. What device should the store possessor recommend to attain the required task?

• projector
• joystick or gamepad
• magstripe reader
• AR headset

9. A client comes into a calculator parts and service store. The customer is looking for a device to scan some old family photos into a laptop. What device should the store owner recommend to achieve the required task?

• flatbed scanner
• joystick or gamepad
• projector
• magstripe reader

x. A client comes into a computer parts and service store. The customer is looking for a device to train pilots how to land and take off in a computer simulation environment. What device should the store owner recommend to accomplish the required job?

• joystick or gamepad
• projector
• magstripe reader
• AR headset

eleven. Which feature describes DDR3 SDRAM?

• fries that run at clock speeds of 800 MHz and have a connector with 240 pins
• an individual memory chip that has dual rows of pins used to attach information technology to the motherboard
• a small circuit lath that holds several memory fries and has a thirty- or 72-pin configuration
• chips specifically designed for video graphics that are used in conjunction with a dedicated GPU

12. Which characteristic describes ECC memory?

• fries that can detect multiple bit errors and correct single bit errors in memory
• chips specifically designed for video graphics that are used in conjunction with a defended GPU
• an individual retentivity bit that has dual rows of pins used to attach it to the motherboard
• chips that run at clock speeds of 800 MHz and have a connector with 240 pins

13. Which feature describes GDDR SDRAM?

• chips specifically designed for video graphics that are used in conjunction with a dedicated GPU
• chips that crave constant ability to part and are often used for cache memory
• chips that run at clock speeds of 800 MHz and accept a connector with 240 pins
• fries whose contents tin be "flashed" for deletion and are often used to store BIOS

14. Which feature describes ROM?

• a chip that cannot be erased or rewritten and is at present obsolete
• chips that run at clock speeds of 800 MHz and have a connector with 240 pins
• chips specifically designed for video graphics that are used in conjunction with a dedicated GPU
• chips that require constant power to function and are often used for enshroud retentiveness

15. Which characteristic describes a DIP?

• an individual memory chip that has dual rows of pins used to attach it to the motherboard
• chips that require constant ability to function and are often used for enshroud retentiveness
• fries that run at clock speeds of 800 MHz and take a connector with 240 pins
• chips whose contents can exist "flashed" for deletion and are frequently used to store BIOS

16. Which feature describes PROM?

• chips that are manufactured blank so can exist programmed once past a PROM programmer
• chips that run at clock speeds of 800 MHz and take a connector with 240 pins
• fries specifically designed for video graphics that are used in conjunction with a dedicated GPU
• chips that crave constant ability to function and are frequently used for enshroud retention

17. Which feature describes a SIMM?

• a small circuit board that holds several memory fries and has a thirty- or 72-pin configuration
• chips that require constant power to part and are often used for cache memory
• chips that run at clock speeds of 800 MHz and accept a connector with 240 pins
• chips whose contents tin be "flashed" for deletion and are often used to shop BIOS

18. Which characteristic describes EPROM?

• a flake that is nonvolatile and tin can be erased by exposing information technology to strong ultraviolet low-cal
• fries that run at clock speeds of 800 MHz and have a connector with 240 pins
• chips specifically designed for video graphics that are used in conjunction with a dedicated GPU
• chips that crave constant power to role and are oftentimes used for cache retention

xix. Which feature describes a SIMM?

• a minor circuit board that holds several memory chips and has a 30- or 72-pin configuration
• SRAM that is internal and integrated into the CPU
• a smaller, more condensed memory module that provides random access data storage, ideal for use in laptops, printers, and other devices where conserving space is desirable
• an private retention fleck that has dual rows of pins used to attach it to the motherboard

20. Which characteristic describes EPROM?

• a chip that is nonvolatile and can be erased past exposing it to stiff ultraviolet calorie-free
• SRAM that is internal and integrated into the CPU
• a smaller, more condensed memory module that provides random access information storage, ideal for utilise in laptops, printers, and other devices where conserving space is desirable
• a pocket-size circuit board that holds several memory chips and has a 30- or 72-pin configuration

21. A technician looks at a motherboard and sees a 24-pivot connector. What component would connect to the motherboard through the use of this 24-pin connector?

• ability supply
• video card
• PATA optical bulldoze
• SATA bulldoze
• floppy drive

22. Which two activities are normally controlled by the Northbridge part of the chipset? (Choose two.)

• communication betwixt the CPU and the I/O ports
• access to the RAM
• communication between the CPU and the hard drive
• access to the video card
• communication betwixt the CPU and the sound card

Explanation The Northbridge chipset generally controls admission to the RAM, video card, and the speeds at which the CPU can communicate with them.

23. Which two components usually interface direct with the Southbridge chipset on the motherboard? (Choose two.)

• video carte
• USB ports
• RAM
• hard drive
• PCIe slots

Explanation The Southbridge chipset allows the CPU to communicate with the hard drive and USB ports (and other I/O ports). CPU access to RAM, video card, and PCIe slots is provided by the Northbridge chipset.

24. Which statement describes the proper employ of an anti-static wrist strap?

• An anti-static wrist strap should not be used in conjunction with an antistatic mat.
• For optimum grounding, the clip should be attached to a painted section of the computer example.
• An anti-static wrist strap should make contact with the skin.
• The anti-static wrist strip should not be attached to whatever grounded object.

Explanation ESD can cause permanent harm to electrical components. An anti-static wrist strap must be worn and grounded when working on a PC. Computer case paints may not be conductive and thus information technology is better to ground the bare department of a computer case.

25. A technician is edifice a thick client workstation that would be used to run a database and wants to ensure the all-time protection against errors. What type of retentivity would exist best suited for this?

• ECC
• RDRAM
• DDR3
• DDR2

Explanation RDRAM, DDR2, and DDR3 RAM exercise not offering any mistake correction abilities for information within the retentivity module. ECC RAM allows for the detection of multiple chip errors and correction of single bit errors within the memory modules.

26. Which type of retention is primarily used every bit cache memory?

• DRAM
• RAM
• ROM
• SRAM

27. Which adapter would a technician install in a desktop computer to enable a video indicate to be recorded from a video recorder to the computer difficult drive?

• video adapter
• Boob tube tuner card
• video capture card
• network interface carte du jour

Explanation A video capture card enables video to be saved equally a file on the computer hard drive from a video recorder. A Telly tuner card enables tv set signals to be received and viewed by the computer. A video adapter enables the figurer to display calculator output on a screen. A network interface menu enables the computer to connect to a data network.

28. Which 2 storage devices apply a magnetic medium for storing information? (Cull two.)

• tape drive
• solid state drive
• hard disk drive
• bluish-ray disk drive
• compact disk drive

Explanation A hard drive, or hard disk drive drive, is a magnetic storage device that is installed within the computer. The hard drive is used every bit permanent storage for data.

A tape drive is a magnetic storage that is most often used for backup or archive data. Magnetic tapes are used to store information via a magnetic read/write head.

29. Which unit of measurement is used to indicate the hard drive speed?

• revolutions per minute
• gigabytes
• pages per infinitesimal
• clusters per minute

Explanation Revolutions per minute (RPM) is the speed at which the spindle in a difficult bulldoze spins. The faster the spindle spins, the faster the data can be retrieved from the platters.

30. What three voltages are normally provided by the power supply to the various components inside the computer? (Choose three.)

• 3.3 volts
• 5 volts
• ix volts
• 12 volts
• 24 volts
• 48 volts

Caption Figurer ability supplies typically deliver three voltages to diverse components inside the reckoner. These are three.3 volts for CPUs, 5 volts for motherboard components, and 12 volts for disk drive motors.

31. A customer needs additional storage infinite on an older computer. What will the technician await at in the computer to determine if an additional hard drive can exist added?

• adequate RAM
• an open PCI/PCIe expansion slot
• an bachelor PATA/SATA connection
• BIOS version
• the heat that is generated and air flow requirements

Explanation PATA supports two devices per cable. PATA cables sometimes have only 1 device connector. A new PATA cable could exist purchased that had 2 device connectors. Each SATA device, on the other hand, requires a SATA port and a SATA cable.

32. Which component controls the communications and interactions between the CPU and other components on the motherboard?

• RAM
• BIOS
• CMOS
• chipset

Explanation The chipset controls communication between the CPU and other computer components.

33. Which statement describes a characteristic of GDDR Synchronous Dynamic RAM?

• Information technology is used in conjunction with a dedicated GPU.
• It processes massive amounts of data at the fastest speeds.
• It is used for main memory.
• It has a low power consumption and is used for cache retentivity.

Explanation GDDR Synchronous Dynamic RAM is peculiarly designed for graphics and is used in conjunction with a GPU.

34. Hard drives in a grocery warehouse go along failing because of vibrations in the warehouse environment. What would be a possible solution for this high failure charge per unit?

• Install an SSD bulldoze in each computer.
• Install a more powerful ability supply in each computer.
• Install an antistatic mat under each computer.
• Install each calculator in a specialized high airflow case.

Explanation SSD drives are an outstanding choice in extreme temperatures, in unusual environments, and in an environment where at that place are vibrations.

35. Refer to the exhibit. Which 2 port types are shown in the graphic? (Choose 2.)

• modem
• network
• parallel
• serial
• USB

Explanation The port on the left is the USB port. The port on the right is the network port.

36. From which type of information storage does the CPU load data for processing during normal functioning?

• SSD
• RAM
• ROM
• hard drive

Explanation RAM is the temporary storage to which data and programs are loaded by the CPU for processing. ROM is read-only retentivity. Its content will non be contradistinct by the CPU during normal operation. Both the difficult drive and an SSD are data storage devices. The CPU volition transport information to them for storage or recollect data from them and load into RAM for processing.

37. Refer to the exhibit. Which blazon of adapter is shown?

• sound
• RAID
• video
• network interface

Explanation The bill of fare that is shown in the exhibit is a network interface adapter with an RJ-45 port which is used to connect the computer to a network via a network cable.

38. Which blazon of device would exist used on a laptop to verify the identity of a user?

• a MIDI device
• a biometric identification device
• a touch screen
• a digitizer

Explanation As biometric identification devices, laptops commonly utilize a fingerprint scanner or, for facial recognition, a photographic camera.

39. Which ii devices are considered input devices? (Choose two.)

• biometric authentication device
• printer
• digital camera
• projector
• speakers

Explanation Biometric authentication devices and digital cameras are considered input devices. Speakers, projectors, and printers are all considered as output devices.

twoscore. What is an active cooling solution for a PC?

• Reduce the speed of the CPU.
• Add a heatsink to the CPU.
• Add together an additional case fan.
• Use a painted estimator case.

Explanation Agile cooling solutions crave power (like adding a case fan) while passive cooling solutions practice not.

41. Which tool tin protect computer components from the effects of ESD?

• antistatic wrist strap
• surge suppressor
• UPS
• SPS

Explanation An antistatic wrist strap equalizes the electrical charge betwixt the technician and the equipment and protects the equipment from electrostatic discharge.

42. Which type of interface was originally developed for loftier-definition televisions and is also popular to use with computers to connect audio and video devices?

• FireWire
• DVI
• HDMI
• USB
• VGA

Explanation Loftier definition multimedia interface, or HDMI, was originally a television standard. However, because it has many digital features, it is also a popular interface to connect sound and video devices to computers.

43. Which statement describes a feature of SRAM in a PC?

• It is used as chief RAM in a PC.
• It has the highest power consumption.
• It is used for cache memory.
• Information technology has a connector with 240 pins.

Caption SRAM is used for enshroud retention. Information technology takes a modest, just abiding source of power to role.

44. A customer has a computer for a dwelling business, just wants to have some other computer as a web server. What would be the all-time solution for the client to share the monitor, mouse, and keyboard between the ii computers?

• admission point
• KVM switch
• multipurpose device
• network switch
• USB hub

Explanation: A KVM switch allows sharing the keyboard, video and mouse between figurer systems.

45. Why is it important to ground both computers and network devices?

• to ensure that both the power supplied and the power used is in sync with the ground voltage
• to ensure that the ability supply is express to an output of 110V DC
• to provide a path of least resistance for devious current
• to facilitate the flow of current from the power supply to the computer instance

Explanation: In the issue of devious current being generated by a mistake within the calculator, the footing volition provide a path of least resistance for the electric current to menstruation harmlessly away.

Version vi:

1. What are 2 factors that must be considered when choosing a computer case? (Cull 2.)

• the size of the monitor
• the speed of the retention
• the number of internal bulldoze locations
• the size of the motherboard and the power supply
• the number of LED indicators at the front of the instance

2. A technician looks at a motherboard and sees a 24-pin connector. What component would connect to the motherboard through the use of this 24-pin connector?

• ability supply
• video bill of fare
• PATA optical drive
• SATA drive
• floppy drive

3. What electrical unit refers to the number of electrons moving through a circuit per second?

• current
• voltage
• resistance
• power

4. What characteristic of electricity is expressed in watts?

• the amount of work required to movement electrons through a excursion
• the resistance to the catamenia of current in a circuit
• the corporeality of electrons flowing through a excursion per 2nd
• the work required to move electrons through a circuit multiplied past the number of electrons flowing through a circuit per second

v. Which type of memory is primarily used as cache memory?

• DRAM
• RAM
• ROM
• SRAM

vi. Refer to the exhibit. Which blazon of adapter is shown?

• audio
• RAID
• video
• network interface

7. Which component controls the communications and interactions between the CPU and other components on the motherboard?

• RAM
• BIOS
• CMOS
• chipset

Explain:
The chipset controls advice between the CPU and other computer components.

8. Which two activities are ordinarily controlled by the Northbridge role of the chipset? (Choose two.)

• communication between the CPU and the I/O ports
• access to the RAM
• communication between the CPU and the hard drive
• admission to the video menu
• communication between the CPU and the sound carte du jour

Explain:
The Northbridge chipset generally controls access to the RAM, video card, and the speeds at which the CPU tin communicate with them.

ix. Which unit of measurement is used to indicate the hard drive speed?

• revolutions per minute
• gigabytes
• pages per infinitesimal
• clusters per minute

Explain:
Revolutions per minute (RPM) is the speed at which the spindle in a difficult drive spins. The faster the spindle spins, the faster the data can be retrieved from the platters.

12. What is indicated past the contrast ratio of a monitor?

• the difference in the intensity of low-cal between the brightest white and darkest blackness that can be displayed
• how often the movie prototype is refreshed
• the total number of pixels that make upward the motion-picture show
• the ratio of the horizontal and vertical viewing areas of the monitor

13. What type of connector can be used to connect an internal difficult drive to the motherboard?

• USB
• SATA
• eSATA
• Thunderbolt

14. Which two factors must exist considered when replacing old RAM modules in a PC? (Choose 2.)

• The new RAM must be compatible with BIOS or UEFI.
• The new RAM must be compatible with the motherboard.
• The speed of the new RAM must be supported by the chipset.
• The power supply must provide the voltage that is requred by the new RAM.
• The new RAM must match the old RAM in terms of chapters and speed.

fifteen. Which term is used to define the wires on a motherboard that move information from 1 part of a computer to another?

• bus
• I/O card
• bridge
• chipset

16. When a new PC is being built, which component has the well-nigh influence when selecting the instance and power supply?

• video card
• audio card
• RAM module
• motherboard
• hard disk type

17. What is the function of the ability supply?

• to catechumen AC power into a lower voltage DC power
• to convert AC power into a higher voltage DC power
• to convert DC ability into a lower voltage AC power
• to catechumen DC ability into a college voltage AC power

xviii. Which two considerations would exist of the greatest importance when building a workstation that will run multiple virtual machines? (Choose two.)

• corporeality of RAM
• number of CPU cores
• h2o cooling
• powerful video card
• high-terminate audio card

nineteen. A user playing a game on a gaming PC with a standard EIDE 5400 RPM hard bulldoze finds the functioning unsatisfactory. Which hard bulldoze upgrade would improve performance while providing more reliability and more energy efficiency?

• a 7200 RPM EIDE hard bulldoze
• a 7200 RPM SATA hard drive
• a x,000 RPM SATA hard drive
• an SSD

20. What three components should exist included in a estimator that is used to create TV commercials and music videos? (Choose 3.)

• actress DIN-6 ports
• specialized video card
• extra PS/ii ports
• big and fast hard drives
• VGA adaptors
• specialized audio menu

21. What are 2 hardware requirements for computers that will be used to run multiple virtual machines? (Choose two.)

• big amounts of RAM
• a multicore CPU
• a high resolution video card
• a high speed wireless adapter
• multiple monitors

22. Which memory technology allows two retentivity modules to be accessed at the same fourth dimension?

• dual channel
• double-sided
• SRAM
• ECC

23. Which security feature in modern CPUs protects retention areas that incorporate part of the operating arrangement from malware attacks?

• encryption
• TPM
• execute disable bit
• LoJack

24. Drag the description on left to its RAID level on the correct.

Answer

25. Match the ports or cables with their descriptions. (Not all options are used.)

Question

Reply

26. Which three devices are considered output devices? (Choose 3.)

• headphones
• keyboard
• fingerprint scanner
• monitor
• mouse
• printer

27. Which hardware upgrade would let the processor in a gaming PC to provide the optimal gaming operation?

• a fast EIDE bulldoze
• large amounts of fast RAM
• liquid cooling
• a high capacity external hard drive

28. Which two storage devices use a magnetic medium for storing information? (Choose two.)

• record drive
• solid land drive
• hard disk
• compact deejay drive
• bluish-ray disk drive

Explain:
A hard bulldoze, or hard disk bulldoze, is a magnetic storage device that is installed inside the estimator. The hard bulldoze is used as permanent storage for information.

A tape drive is a magnetic storage that is nigh frequently used for backup or archive data. Magnetic tapes are used to store data via a magnetic read/write caput.

29. Which 2 pieces of information are needed before selecting a power supply? (Choose two.)

• the full wattage of all components
• the voltage requirements of peripheral devices
• the form factor of the case
• the type of CPU
• the installed operating system

thirty. Which retentiveness module has a front side bus speed of 200 MHz?

• DDR3-667
• PC100 SDRAM
• DDR-400
• DDR-333

31. Refer to the exhibit. Which blazon of video bill of fare expansion slot is depicted?

• PCIe
• ISA
• PCI
• AGP

32. What type of connector can be used to connect an eSATA interface to an external SATA drive?

• vii-pin connector
• 9-pin connector
• xv-pin connector
• five-pin connector

33. Where can the input voltage pick exist changed from 110 volts to 220 volts on a computer organisation?

• on the motherboard
• in the BIOS
• on the dorsum of the ability supply
• in the operating system control console

34. Refer to the exhibit. Which blazon of cablevision is shown in the graphic?

• USB
• parallel
• FireWire
• serial

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