1483308
Pregunta 1
Pregunta
What are two factors that must be considered when choosing a computer case? (Choose two.)
Respuesta
-
the size of the monitor
-
the vendor that manufactured the motherboard
-
the number of external or internal drive locations
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the size of the motherboard and the power supply
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the number of LED indicators at the front of the case
Pregunta 2
Pregunta
What are the two connector types for the 1394a interface? (Choose two.)
Respuesta
-
2-pin
-
4-pin
-
6-pin
-
8-pin
-
9-pin
-
15-pin
Pregunta 3
Pregunta
What is a function of a KVM switch?
Respuesta
-
digitizes an image or document and sends the information to multiple computers
-
stores images from both digital still cameras and digital video cameras on magnetic media
-
provides capability to share a keyboard, a mouse, USB devices, and speakers with multiple computers
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provides biometric identification to an individual user by the use of fingerprints, voice recognition,or a retinal scan
Pregunta 4
Pregunta
A student has passed the CompTIA A+ certification exam. Based on this passing score, for which job is the student now qualified?
Respuesta
-
network associate
-
security technician
-
network technician
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network professional
-
PC hardware and software technician
Pregunta 5
Pregunta
Which type of ROM can be reprogrammed with software while it is still physically installed in the computer?
Respuesta
-
EEPROM
-
EPROM
-
PROM
-
ROM
Pregunta 6
Pregunta
Which type of computer resources are direct lines to the processor and are used by computer components to request attention from the CPU?
Respuesta
-
DMAs
-
I/O addresses
-
IRQs
-
memory addresses
Pregunta 7
Pregunta
Which three devices are considered output devices? (Choose three.)
Respuesta
-
fingerprint scanner
-
headphones
-
keyboard
-
monitor
-
mouse
-
printer
Pregunta 8
Pregunta
Which technology would be best to use for drive redundancy and data protection?
Respuesta
-
CD
-
DVD
-
PATA
-
RAID
-
SCSI
Pregunta 9
Pregunta
Which two devices are considered input devices? (Choose two.)
Respuesta
-
biometric authentication device
-
printer
-
digital camera
-
projector
-
speakers
Pregunta 10
Pregunta
Which two form factors are commonly used to build a new computer? (Choose two.)
Respuesta
-
BTX
-
NLQ
-
ATX
-
CLV
-
ECC
Pregunta 11
Pregunta
What is the function of a fan on top of a heat sink?
Respuesta
-
to cool the memory modules
-
to move the heat away from the CPU
-
to draw cool air into the computer case
-
to provide a water-cooling system for extremely fast CPUs
Pregunta 12
Pregunta
Which important feature is offered by the USB standard?
Respuesta
-
A single USB connection to a computer can support up to 255 separate devices.
-
It offers rates of around 580 Mb/sec in low-speed mode.
-
It allows up to 920 Mb/sec in the 2.0 version.
-
It can supply power from the computer to devices.
Pregunta 13
Pregunta
Which three system resources are commonly used for communication between the CPU or memory and other components in the computer? (Choose three.)
Respuesta
-
IRQ
-
DMA
-
UDP
-
I/O address
-
USB
-
PnP
Pregunta 14
Pregunta
Which memory module has a front side bus speed of 200 MHz?
Respuesta
-
DDR-333
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DDR-400
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DDR3-667
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PC100 SDRAM
Pregunta 15
Pregunta
A technician receives a complaint of poor image quality after the user changes the native resolution. While investigating the complaint, the technician discovers there is a mismatch between native mode and the native resolution of the peripheral. Which item is configured incorrectly?
Respuesta
-
DLP
-
LCD
-
printer
-
scanner
Pregunta 16
Pregunta
What is a function of the operating system in a computer?
Respuesta
-
It defines the physical components in the computer.
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It instructs the computer how to process information.
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It provides instructions on how to access the Internet.
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It identifies the type of firmware that is installed in the computer.
Pregunta 17
Pregunta
A technician creates a simple circuit that has a 9 V light bulb attached to a 9 V battery. The power output of the light bulb is 100 W. Which equation should be used to calculate how much current in amps is required to achieve the full 100 W output from the 9 V bulb?
Image:
p17-IT-ex1 (image/png)
Respuesta
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I = P/V = 100W/9V = 11.11A
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I = P*V = 100W*9V = 900A
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I = (P/2)*V = 50W*9V = 450A
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I = P*2*V = 100W*(9V + 9V) = 8100A
Pregunta 18
Pregunta
Refer to the exhibit. Based on the advertisement that is shown, what is the native resolution of this computer system?
Image:
p17-IT-ex1 (image/png)
Respuesta
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8x
-
3 GB
-
2.0 GHz
-
1919 MB
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1280 x 800
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13.35 x 9.57
Pregunta 19
Pregunta
Which IEEE standard defines the FireWire technology?
Respuesta
-
1284
-
1394
-
1451
-
1539
Pregunta 20
Pregunta
How many FireWire devices can be supported by a single FireWire port?
Respuesta
-
12
-
25
-
32
-
54
-
63
-
127
Pregunta 21
Pregunta
Which type of memory is primarily used as cache memory?
Respuesta
-
DRAM
-
RAM
-
ROM
-
SRAM
Pregunta 22
Pregunta
Which two considerations would be of the greatest importance when building a workstation that will run multiple virtual machines? (Choose two.)
Respuesta
-
high-end sound card
-
number of CPU cores
-
water cooling
-
powerful video card
-
amount of RAM
Pregunta 23
Pregunta
A user playing a game on a gaming PC with a standard EIDE 5400 RPM hard drive finds the performance unsatisfactory. Which hard drive upgrade would improve performance while providing more reliability and using less power?
Respuesta
-
a 7200 RPM SATA hard drive
-
a 7200 RPM EIDE hard drive
-
an SSD
-
a 10,000 RPM SATA hard drive
Pregunta 24
Pregunta
Which hardware upgrade would allow the processor in a gaming PC to provide the optimal gaming performance?
Respuesta
-
a fast EIDE drive
-
large amounts of fast RAM
-
liquid cooling
-
a high capacity external hard drive
Pregunta 25
Pregunta
Which two storage devices use a magnetic medium for storing data? (Choose two.)
Respuesta
-
tape drive
-
solid state drive
-
hard disk drive
-
compact disk drive
-
blue-ray disk drive
Pregunta 26
Respuesta
-
network interface
-
sound
-
video
-
RAID
Pregunta 27
Pregunta
Which component controls the communications and interactions between the CPU and other components on the motherboard?
Respuesta
-
RAM
-
CMOS
-
chipset
-
BIOS
Pregunta 28
Pregunta
Which two pieces of information are needed before selecting a power supply?
Respuesta
-
the total wattage of all components
-
the voltage requirements of peripheral devices
-
the form factor of the case
-
the type of CPU
-
the installed operating system
Pregunta 29
Pregunta
What are the 2 characteristics of RAID 0? (Choose 2 answers)
Respuesta
-
disk mirroring
-
combination of data striping and parity
-
highest performance
-
high performance and high protection because all data is duplicated
-
data striping without redundancy
-
ability of data to be rebuilt with information from the other drives
Pregunta 30
Pregunta
What are the 2 characteristics of RAID 1? (Choose 2 answers)
Respuesta
-
disk mirroring
-
combination of data striping and parity
-
highest performance
-
high performance and high protection because all data is duplicated
-
data striping without redundancy
-
ability of data to be rebuilt with information from the other drives
Pregunta 31
Pregunta
What are the 2 characteristics of RAID 5? (Choose 2 answers)
Respuesta
-
disk mirroring
-
combination of data striping and parity
-
highest performance
-
high performance and high protection because all data is duplicated
-
data striping without redundancy
-
ability of data to be rebuilt with information from the other drives
Pregunta 32
Pregunta
Which unit of measurement is used to indicate the hard drive speed?
Respuesta
-
pages per minute
-
gigabytes
-
revolutions per minute
-
clusters per minute
Pregunta 33
Pregunta
Refer to the exhibit. Which type of video card expansion slot is depicted?
Image:
p31-IT-ex1 (image/png)
Respuesta
-
PCIe
-
ISA
-
PCI
-
AGP
Pregunta 34
Pregunta
What type of connector can be used to connect an eSATA interface to an external SATA drive?
Respuesta
-
7-pin connector
-
9-pin connector
-
15-pin connector
-
5-pin connector
Pregunta 35
Pregunta
Where can the input voltage selection be changed from 110 volts to 220 volts on a computer system?
Respuesta
-
on the motherboard
-
in the BIOS
-
on the back of the power supply
-
in the operating system control panel
Pregunta 36
Pregunta
Which one of the following is a 7-pin cable that connects to an external hard drive?
Respuesta
-
SCSI
-
PS/2
-
serial
-
parallel
-
eSATA
Pregunta 37
Pregunta
Which one of the following can support up to 15 devices and must be terminated at the end of the chain?
Respuesta
-
SCSI
-
PS/2
-
serial
-
parallel
-
eSATA
Pregunta 38
Pregunta
Which one of the following is a 6-pin mini-DIN connector for a keyboard or a mouse?
Respuesta
-
SCSI
-
PS/2
-
serial
-
parallel
-
eSATA
Pregunta 39
Pregunta
Which one of the following transmits 8 bits of data at one time and uses the IEEE 1284 standard?
Respuesta
-
SCSI
-
PS/2
-
serial
-
parallel
-
eSATA
Pregunta 40
Pregunta
Which one of the following uses either a DB-9 or DB-25 connector and transmits one bit of data at a time?
Respuesta
-
SCSI
-
PS/2
-
serial
-
parallel
-
eSATA
Pregunta 41
Pregunta
Refer to the exhibit. Which type of cable is shown in the graphic?
Image:
p35-IT-ex1 (image/png)
Respuesta
-
USB
-
parallel
-
FireWire
-
serial
Pregunta 42
Pregunta
Which two activities are normally controlled by the Northbridge part of the chipset? (Choose two.)
Respuesta
-
communication between the CPU and the sound card
-
communication between the CPU and the hard drive
-
access to the RAM
-
communication between the CPU and the I/O ports
-
access to the video card
Pregunta 43
Pregunta
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?
Respuesta
-
power supply
-
SATA drive
-
video card
-
PATA optical drive
-
floppy drive
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