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CompTia 901 A+ > 1.5 > Flashcards

1.5 Flashcards

1
Q

How much can a CD-ROM hold?

A

Up to 700 MB

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2
Q

How much can a DVD-ROM hold?

A

Up to 4.7 GB

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3
Q

How much can a Dual Layer DVD-ROM hold?

A

Up to 8.5 GB

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4
Q

How much can a Blu-Ray hold?

A

Up to 25 GB

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5
Q

How much can a Dual Layer Blu-Ray hold?

A

Up to 50 GB

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6
Q

Which optical format can hold up to 700 MB?

A

CD-ROM

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7
Q

Which optical format can hold up to 4.7 GB?

A

DVD-ROM

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8
Q

Which optical format can hold up to 8.5 GB?

A

Dual Layer DVD-ROM

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9
Q

Which optical format can hold up to 25 GB?

A

Blu-Ray

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10
Q

Which optical format can hold up to 50 GB?

A

Dual Layer Blu-Ray

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11
Q

How does commercial devices write to optical media?

A

They create tiny bumps on the disk

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12
Q

How does retail devices write optical media?

A

They burn the photosensitive dye

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13
Q

Which types of optical media can be rewriteable?

A

RW and for Blu-Ray (BD-RE)

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14
Q

Which types of optical media can only be recorded once?

A

R (ie DVD-R, BD-R)

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15
Q

How does a Hard Disk Drive (HHD) operate?

A

By spinning platters inside of the HHD

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16
Q

What does RW mean on optical media?

A

Rewritable

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17
Q

What does R mean on optical media?

A

Recordable

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18
Q

What does the platters on a HDD spin around?

A

Spindle

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19
Q

What is a spindle?

A

It is what the platters inside of a HDD spin around

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20
Q

What moves the arm back and forth on a HDD?

A

Actuator

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21
Q

What does an actuator do?

A

Moves the arm back and forth on an HDD

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22
Q

What read and writes information onto the platter of a HDD?

A

Head

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23
Q

What does the head on a HDD do?

A

It reads and writes information onto the platter of a HDD

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24
Q

What is a Solid State Drive (SSD)?

A

A storage device containing non-volatile flash memory, used in place of a hard disk because of its much greater speed.

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25
Q

Which is faster SSD or HDD?

A

Solid State Drive (SSD)

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26
Q

What does an SSD use as memory?

A

Flash Memory

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27
Q

What is a Solid State Hybrid Drive (SSHD)?

A

It combines a spinning drive and a SSD into a single device

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28
Q

What combines a spinning drive and a SSD?

A

Solid State Hybrid Drive (SSHD)

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29
Q

What does a SSHD do different?

A

It caches the slower spinning hard drive data onto the flash memory

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30
Q

What is a hot swappable drive?

A

You can add and remove drives while the system is running

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31
Q

What type of devices can be hot swappable? (4)

A

USB, Firewire, SATA, eSATA

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32
Q

Is a USB device hot swappable?

A

Yes

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33
Q

Is a Firewire device hot swappable?

A

Yes

34
Q

Is a SATA device hot swappable?

A

Yes

35
Q

Is a eSata device hot swappable?

A

Yes

36
Q

What does USB flash drives use as memory?

A

EEPROM flash memory

37
Q

What is a plus for USB flash drives?

A

Non-volatile memory and it needs no power to retain data

38
Q

What is a negative for USB flash drives?

A

It has a limited number of writes

39
Q

What is the common flash memory type in mobile devices?

A

eMMC

40
Q

What is tape drive commonly used for?

A

Archival purposes

41
Q

How does tape drives store data?

A

With a magnetic tape with sequential storage

42
Q

What type of format does tape drives use?

A

Linear Tape-Open (LTO)

43
Q

Which type of storage device uses the Linear Tape-Open format?

A

Tape Drives

44
Q

Which types of flash drive uses EEPROM flash memory?

A

USB flash drives

45
Q

What type of flash drive has nonvolatile memory and it needs no power to retain data?

A

USB flash drive

46
Q

Which provides a higher performance? Software or hardware based RAID?

A

Hardware

47
Q

Which RAID does just striping?

A

RAID 0

48
Q

What does striping do in RAID systems?

A

It splits the file blocks between two or more drives

49
Q

What is a negative for RAID 0?

A

It has no redundancy. If one drive fails everything is lost

50
Q

What is a positive for RAID 0?

A

High performance so the data can be written quickly

51
Q

What does RAID 0 do?

A

Striping only

52
Q

What does RAID 1 do?

A

Mirroring only

53
Q

Which RAID does just mirroring?

A

RAID 1

54
Q

What is RAID mirroring?

A

File blocks are duplicated between multiple physical drives

55
Q

What is a positive for RAID 1?

A

High redundancy. If one drive fails you have a backup

56
Q

What is a negative for RAID 1?

A

Requires double the disk space you would normally need

57
Q

What does RAID 5 do?

A

Striping with parity

58
Q

Which type of RAID does striping with parity?

A

RAID 5

59
Q

How many disks does RAID 5 need?

A

Atleast 3

60
Q

What does RAID 1+0 do?

A

A Stripe of mirrors

61
Q

How many drives does RAID 1+0 need?

A

4

62
Q

Which RAID does a stripe of mirrors?

A

RAID 1+0

63
Q

What is a HDD speed measured in?

A

Revolutions per minute (RPM)

64
Q

What is measured at Revolutions per minute?

A

HDD

65
Q

What exotic connectors can come with a SSD? (2)

A

mSata and M.2

66
Q

What is a M.2 connector?

A

A special slot on a motherboard for a SSD

67
Q

What is a special slot on a motherboard for an SSD?

A

M.2 connector

68
Q

What is the Windows trim function?

A

a periodic garbage collection system that identifies SSD memory cells with deleted content and erases them

69
Q

Which Windows function is a periodic garbage collection system that identifies SSD memory cells with deleted content and erases them

A

Windows trim function

70
Q

What is the host bus adapter (HBA)?

A

SATA controller

71
Q

What is the max distance of a PATA cable?

A

18 inches

72
Q

What is the max number of SATA drives you can have in a computer?

A

Unlimited

73
Q

What is hot swapping?

A

Where you can plug in and uplug a device while a computer is running

74
Q

What is the max throughput of SATA 3.2 / SATAe?

A

16 Gb/s

75
Q

If you have two drives on separate controllers and they mirror each other what is that called?

A

disk duplexing

76
Q

What is disk duplexing?

A

You have two drives each on a separate controller and they mirror each other

77
Q

Which raid options come with Windows Server?

A

RAID 0 / 1 / 5

78
Q

What is a Hard disk drive (HDD)?

A

A hard disk is a thick magnetic disk encased in a thicker protective shell.

79
Q

Standard hard drives are categorized as:

A

5400 rpm (inexpensive HDD)

7200 rpm (good quality HDD)

10,000 rpm (expensive HDD)

80
Q

How much can a CD-RW hold?

A

650 Megabytes

CompTia 901 A+ (25 decks)

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