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CC A+ 901 Quiz > C02 - Storage Devices and Power Supplies > Flashcards

C02 - Storage Devices and Power Supplies Flashcards

1
Q 
What is the physical component where data is stored in a HDD?
A. Read/write head
B. Platter
C. Sector
D. Cluster
A

B. A conventional HDD contains discs called platters, on which data is stored magnetically
through read/write heads by way of a magnetic coating.

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2
Q 
What is the physical component where data is stored in a HDD?
A. Read/write head
B. Platter
C. Sector
D. Cluster
A

A. A conventional hard disk drive system consists of the hard disk and its oftenintegrated
controller as well as a host adapter to gain access to the rest of the computer
system. The drive interface is a common component of the controller and host adapter.

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3
Q 
What is the largest NTFS volume size supported, assuming a 64KB cluster size as maximum?
A. 256GB
B. 2TB
C. 128TB
D. 256TB
A

D. A fixed number of clusters is supported by each operating system, leading to a corresponding
maximum volume size. If the maximum NTFS cluster size of 64KB is used,
NTFS can support a single-volume size of 64KB less than 256TB. When a cluster size
of one sector, or 512 bytes (1⁄2KB), is used, the maximum volume size reduces to 2TB.

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4
Q

Which technology is based on flash memory and is intended eventually to replace conventional
hard disk drives that have moving discs and other mechanisms?
A. USB flash drives
B. Memory cards
C. Solid-state drives
D. Optical drives

A

C. Solid-state disks (SSDs) are capable of replacing conventional HDDs, contingent
upon cheaper components and higher capacities.

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5
Q

A client is looking for a desktop drive technology that saves money over SSDs but offers
performance increases over HDDs and can be used to house the operating system. Which of
the following is the best to recommend?
A. Dual-drive technology
B. SSHD
C. eMMC
D. Magnetic-only drive

A

B. A solid-state hybrid drive incorporates the features of both conventional magneticonly
hard drives and solid-state drives. As a result, the performance of an SSHD exceeds
that of a hard drive but costs less than the equivalent-sized SSD. A dual-drive option
still requires the purchase of a full-sized SSD. Adding the cost of the SSD and the HDD,
the dual-drive solution does not satisfy the requirement of an affordable technology.

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6
Q

Which optical disc format supports a data capacity of 25GB?
A. Double-sided, double-layer DVD+R
B. Single-sided, single-layer Blu-ray disc
C. Double-sided, single-layer DVD-R
D. Double-sided, single-layer DVD+R

A

B. Blu-ray discs have a single-sided, single-layer capacity of 25GB. The best the other
options achieve is no more than roughly 17GB.

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7
Q

Which of the following best describes the concept of hot-swappable devices?
A. Power does not need to be turned off before the device is inserted or removed.
B. The device can be removed with power applied after it is properly stopped in the operating
system.
C. Care must be taken when swapping the device because it can be hot to the touch.
D. The device can be swapped while still hot, immediately after powering down the system.

A

A. Hot-swappable devices can be removed while the power to the system is still on.
Warm-swappable devices need to be stopped in the operating system before being
removed. The term has nothing to do with the heat level of the device.

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8
Q

Of the following voltage pairings, which one accurately represents the input and output,
respectively, of power supplies and AC adapters?
A. AC in, AC out
B. DC in, DC out
C. AC in, DC out
D. DC in, AC out

A

C. Power supplies and AC adapters use standard wall outlets for an input of AC voltage,
which they convert to the DC voltages required by the components to which they
supply power.

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9
Q 
What are the output voltages that have been commonly produced by PC power supplies
over the years? (Choose five.)
A. +3.3VDC
B. –3.3VDC
C. +5VDC
D. –5VDC
E. +12VDC
F. –12VDC
G. +110VAC
H. –110VAC
A

A, C, D, E, F. A PC’s power supply produces +3.3VDC, +5VDC, –5VDC, +12VDC,
and –12VDC from a 110VAC input.

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10
Q

Which of the following statements about power supplies is true?
A. You must make sure that the voltage selector switch on the back of the power supply is
switched to the lower setting if the computer is going to be used in Europe.
B. SATA hard drives most often use the same type of power connector that PATA hard
drives use.
C. Power supplies supply power to ATX-based motherboards with connectors known
commonly as P8 and P9.
D. Power supplies convert AC input to DC output.

A

D. PC power supplies accept alternating current as input and produce direct current for the
internal components. Europe requires the voltage selector switch be set at the higher setting.
SATA drives most often use a specific power connector that is not compatible with the
Molex connector used by PATA drives. Legacy AT-based motherboards called for P8 and
P9 connectors; ATX motherboards have a newer 20- or 24-pin single power connector.

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11
Q

Which of the following is not a consideration when installing an internal storage device?
A. You should match the form factor of the drive or adapt it to an available drive bay or slot.
B. You should secure the drive with at least two screws on one side and preferably two on
each side.
C. Due to the high revolutions at which modern hard drives spin, you must secure an
external power source because the internal power supplies do not have the capacity.
D. You need to be sure that the routing of the drive’s ribbon cable, if applicable, does not
obstruct the engineered flow of air across internal components.

A

C. Today’s hard drives, regardless of their rpm, have standard internal power connections.
Each of the other options are valid concerns when installing an internal drive.

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12
Q 
What kind of media is most commonly used when large amounts of data need to be
archived on a regular basis?
A. Tape
B. Optical disc
C. External hard drive
D. Network share
A

A. Although inefficient as an interactive medium, sequential tape-based storage continues
to be developed in increasing capacities. Tape remains the best choice for frequently
backing up large amounts of data for redundancy and archival purposes.

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13
Q 
What does the e stand for in eMMC?
A. Embedded
B. Enhanced
C. Extended
D. External
A

A. The e in eMMC stands for embedded. MultiMediaCard memory cards were modified
to be able to be embedded on circuit boards in small or inexpensive devices. The
eMMC module acts as solid-state form of secondary storage, performing similar functions
to the HDDs and SSDs of larger or more expensive systems.

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14
Q 
Which of the following platter spin rates is not commonly associated with conventional
magnetic hard disk drives?
A. 5400 rpm
B. 7200 rpm
C. 10,000 rpm
D. 12,000 rpm
A

D. 12,000 rpm HDDs were once produced in low quantities but were never common.

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15
Q

Which of the following is not a consideration when upgrading power supplies?
A. You might find that you do not have a matching motherboard connector on your new
power supply.
B. You might find that your case has a nonremovable power supply.
C. You might find that your power rating is not adequate on the new power supply.
D. You might find that you do not have enough of the appropriate connectors coming
from the power supply for the devices that you have installed.

A

B. Personal computers do not have permanently installed power supplies. Like other
electrical and electronic components, power supplies can and do fail on a regular basis.
Permanently mounting a power supply to a chassis would be a disservice to the consumer.
You should consider the cumulative power needs of your installed components,
and you might have to obtain adapters and splitters if you do not have enough or you
have the wrong types of connectors coming from the power supply.

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16
Q 
What does the red stripe on a ribbon cable indicate?
A. Pin 16
B. Pin 1
C. The manufacturer’s trademark
D. Parity
A

B. The red stripe on the cable indicates pin 1.

17
Q

Which of the following statements about dual-rail power supplies is LEAST true?
A. Dual-rail power supplies have electrically separate 12VDC connections.
B. Dual-rail power supplies typically support more cumulative amperage than single-rail
supplies.
C. Dual-rail power supplies are less likely to be overdrawn by connected components.
D. Dual-rail power supplies feature most of the same connections as a single-rail supply.

A

C. One drawback to dual-rail power supplies is that despite the fact that they supply
more cumulative power, they offer less power on each individual rail than the single
rail of other power supplies. As a result, it is easier to overdraw one of the two rails
than it is to overdraw a single-rail power supply’s rail because the two rails do not
combine their power but instead offer it separately, thus reducing the relative output of
each individual rail.

18
Q

Which of the following best describes a hybrid drive?
A. A drive that has a SATA interface as well as one other
B. A drive that has both HDD and SSD components
C. A drive that can be used with Windows or Mac OS
D. A drive that is partially internal and partially external

A

B. Hybrid drives are named for their inclusion of traditional hard drive technology
as well as newer solid-state technology. Hybrid systems can be all in one or comprise
one drive of each technology. Special software is needed to optimize the hybrid drive’s
usage and performance.

19
Q 
Which of the following is a concept that applies only to conventional magnetic hard disk
drives and not newer solid-state drives?
A. Storage capacity
B. External attachment
C. Access time
D. 7200 rpm
A 
D. Each concept applies to both HDDs and SSDs except for platter spin rates. Revolutions
per minute (rpm) measurements refer to drives with moving parts. SSDs have none.
20
Q

When replacing a power supply, which of the following tends to vary among power supplies
and must be chosen properly to support all connected devices?
A. Wattage
B. Voltage
C. Amperage
D. Resistance

A

A. Power supplies are rated in watts. When you purchase a power supply, you should
make sure the devices inside the computer do not require more wattage than the chosen
power supply can offer. The voltage is fairly standard among power supplies, and it has
nothing to do with the devices connected to the power supply. Amperage and resistance
are not selling points for power supplies.

CC A+ 901 Quiz (14 decks)

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