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A+ IT Essentials Flashcards

1
Q

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

A

to provide a path of least resistance for stray current

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2
Q

The customer is looking for a device to help a person with accessibility issues input instructions into a laptop by using a pen. What device should the storecrecommend?

A

stylus

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3
Q

Customer is looking for a device to provide secure access to the central server room using a retinal scan. What device should the store recommend?

A

biometric scanner

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4
Q

Customer is looking for a device to manually input text for a new networking textbook that the customer is writing. What device should the store recommend ?

A

keyboard

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5
Q

Customer looking for a device to allow secure access to the main doors of the company by swiping an ID card. What device should the store recommend?

A

magstripe reader

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6
Q

Customer is looking for a device to allow users to tap and pay for their purchases. What device should the store recommend?

A

NFC device

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7
Q

Customer looking for device to display a promotional presentation to a large audience at a conference. What device should the store recommend?

A

projector

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8
Q

Customer is looking for a device to scan some old family photos into a laptop. What device should the store recommend?

A

flatbed scanner

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9
Q

Customer is looking for a device to train pilots how to land and take off in a computer simulation environment. What device should store recommend?

A

joystick or gamepad

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10
Q

Describe DDR3 SDRAM

A

chips that run at clock speeds of 800 MHz and have a connector with 240 pins

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11
Q

Describe ECC memory

A

chips that can detect multiple bit errors and correct single bit error in memory

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12
Q

Describe GDDR SDRAM

A

chips specifically designed for video graphics that are used in conjunction with a dedicated GPU

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13
Q

Describe ROM

A

a chip that cannot be erased or rewritten and is now obsolete

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14
Q

Describe a DIP

A

an individual memory chip that has dual rows of pins used to attach it to the motherboard

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15
Q

Describe PROM

A

chips that are manufactured blank and then can be programmed once by a PROM programmer

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16
Q

Describe SIMM

A

a small circuit board that hold several memory chips and has a 30- or 72-pin configuration

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17
Q

Describe EPROM

A

a chip that is nonvolatile and can be erased by exposing it to strong ultraviolet light

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18
Q

What component would connect to the motherboard through the use of a 24-pin connector?

A

power supply

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19
Q

Two activities that are normally controlled byt the Northbridge part of the chipset

A

access to the ram

access to the video card

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20
Q

Two components that interface with the Southbridge chipset on the motherboard

A

USB ports

hard drive

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21
Q

Describe the proper use of an anti-static wrist strap

A

An anti-static wrist strap should make contact with the skin

22
Q

Thick client workstation that would be used to run a database and wants to ensure the best protection against errors. What type of memory would be best suited for this?

A

ECC

Explanation: RDRAM, DDR2, and DDR3 RAM do not offer any error correction abilities for data within the memory module. ECC RAM allows for the detection of multiple bit errors and correction of single bit errors within the memory modules.

23
Q

Which type of memory is primarily used as cache memory?

24
Q

Which adapter would a technician install in a desktop computer to enable a video signal to be recorded from a video recorder to the computer hard drive?

A

video capture card

Explanation: A video capture card enables video to be saved as a file on the computer hard drive from a video recorder. A TV tuner card enables television signals to be received and viewed by the computer. A video adapter enables the computer to display computer output on a screen. A network interface card enables the computer to connect to a data network.

25
Two storage devices use a magnetic medium for storing data?
tape drive hard disk drive Explanation: A hard drive, or hard disk drive, is a magnetic storage device that is installed inside the computer. The hard drive is used as 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 data via a magnetic read/write head.
26
Unit of measurement is used to indicate the hard drive speed
revolutions per minute Explanation: Revolutions per minute (RPM) is the speed at which the spindle in a hard drive spins. The faster the spindle spins, the faster the data can be retrieved from the platters.
27
What three voltages are commonly provided by the power supply to the various components inside the computer?
3.3 volts 5 volts 12 volts Explanation: Computer power supplies typically deliver three voltages to various components inside the computer. These are 3.3 volts for CPUs, 5 volts for motherboard components, and 12 volts for disk drive motors.
28
Customer needs additional storage space on an older computer. What will the technician look at in the computer to determine if an additional hard drive can be added?
an available PATA/SATA connection Explanation: PATA supports two devices per cable. PATA cables sometimes have only one device connector. A new PATA cable could be purchased that had two device connectors. Each SATA device, on the other hand, requires a SATA port and a SATA cable.
29
Which component controls the communications and interactions between the CPU and other components on the motherboard?
chipset Explanation: The chipset controls communication between the CPU and other computer components.
30
Which statement describes a characteristic of GDDR Synchronous Dynamic RAM?
It is used in conjunction with a dedicated GPU Explanation: GDDR Synchronous Dynamic RAM is specially designed for graphics and is used in conjunction with a GPU.
31
Hard drives in a grocery warehouse keep failing because of vibrations in the warehouse environment. What would be a possible solution for this high failure rat?
Install an SSD drive in each computer Explanation: SSD drives are an outstanding choice in extreme temperatures, in unusual environments, and in an environment where there are vibrations.
32
From which type of data storage does the CPU load information for processing during normal operation?
RAM Explanation: RAM is the temporary storage to which data and programs are loaded by the CPU for processing. ROM is read-only memory. Its content will not be altered by the CPU during normal operation. Both the hard drive and an SSD are data storage devices. The CPU will send data to them for storage or retrieve data from them and load into RAM for processing.
33
Which type of device would be used on a laptop to verify the identity of a user?
a biometric identification device Explanation: As biometric identification devices, laptops commonly use a fingerprint scanner or, for facial recognition, a camera.
34
Two devices that are considered input devices?
biometric authentication device digital camera Explanation: Biometric authentication devices and digital cameras are considered input devices. Speakers, projectors, and printers all considered as output devices.
35
What is an active cooling solution for a PC?
Add an additional case fan. Explanation: Active cooling solutions require power (like adding a case fan) while passive cooling solutions do not.
36
Which tool can protect computer components from the effects of ESD?
antistatic wrist strap Explanation: An antistatic wrist strap equalizes the electrical charge between the technician and the equipment and protects the equipment from electrostatic discharge.
37
Which type of interface was originally developed for high-definition televisions and is also popular to use with computers to connect audio and video devices?
HDMI Explanation: High 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 audio and video devices to computers.
38
Characteristic of SRAM in a PC
It is used for cache memory Explanation: SRAM is used for cache memory. It takes a small, but constant source of power to function.
39
What would be the best solution to share the monitor, mouse, and keyboard between the two computers?
KVM switch Explanation: A KVM switch allows sharing the keyboard, video and mouse between computer systems.
40
DDR3 SDRAM
Double Data Rate 3 Synchronous Dynamic Random-Access Memory
41
ECC
Error Correction Code
42
GDDR SDRAM
synchronous dynamic random-access memory
43
ROM
Read-Only Memory
44
DIP
Dual in-line Package
45
PROM
programmable read-only memory
46
SIMM
single in-line memory module
47
EPROM
erasable programmable read-only memory
48
SRAM
Static random-access memory
49
SSD
solid-state drive
50
RAM
Random-access memory
51
ESD
Electro static discharge

IT Cybersecurity (14 decks)

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