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CompTIA A+ Core 1 > 7. Storage Devices > Flashcards

7. Storage Devices Flashcards

1
Q

What SDD size is only used in small laptops?

A

1.8”

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2
Q

What SSD form factor is used when replacing an HDD inside a laptop or small desktop?

A

2.5”

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3
Q

What SDD form factor looks like a memory chip and is used in laptops?

A

M2

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4
Q

What connector does older SSDs use?

A

7+15 pin SATA

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5
Q

What connector allows an SSD to be used as an adapter card that can be plugged into a combined data and power port on the motherboard?

A

mSATA

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6
Q

What is the communication protocol used with the M2 form factor to plug
directly into the motherboard?

A

Non-Volatile Memory Express (NVMe)

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7
Q

What are the five types of RAID (Redundant Array of Independent Disks)?

A

RAID 0, 1, 5, 6, and 10

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8
Q

Which RAID is good for speed but provides no data redundancy, and has no loss of disk space?

A

RAID 0

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9
Q

Which RAID only provides full data redundancy?

A

RAID 1

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10
Q

Which RAID has striping with parity, and one disk can be lost without any loss in data?

A

RAID 5

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11
Q

Which RAID has double striping with parity, and two disks can be lost without any loss in data?

A

RAID 6

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12
Q

Which RAID combines full data redundancy with performance speed?

A

RAID 10

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13
Q

Which RAIDs are considered “failure resistant”, meaning they protect against the loss of erased data?

A

RAID 1, RAID 5

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14
Q

Which RAIDs are considered “fault tolerant”, meaning they can function even when a component fails?

A

RAID1, RAID 5, RAID 6

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15
Q

Which RAID is considered “disaster tolerant” and has two independent zones with full data access?

A

RAID 10

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16
Q

What technical standard developed byt Intel allowed hot-swappable capacity with SATA cables?

A

Advanced Host Controller Interface (AHCI)

17
Q

What was the max speed of the original SD cards?

A

25 MB/s

18
Q

What is the max speed of UHS-1 SD cards?

A

108 MB/s

19
Q

What is the max speed of UHS-2 SD cards?

A

312 MB/s

20
Q

What is the max speed of UHS-3 SD cards?

A

624 MB/s

21
Q

How much storage space did the original CDs support?

A

650~700 MB | 74~80 mins of music

22
Q

How much storage space did DVDs support?

A

4.7 GB or 8.4 GB

23
Q

How much storage space did Blu-ray Discs (BDs) support?

A

25 GB or 50 GB

24
Q

What drive speed do CDs support for music?

A

1X = 150 KB/s

25
Q

What drive speeds do CDs support for data?

A

2X / 44X / 16X / 24X

26
Q

What X-rating is used to measure the drive speed of DVDs?

A

1X = 1.385 MB/s

27
Q

What X-rating is used to measure the drive speed of Blu-ray?

A

1X = 4.5 MB/s

CompTIA A+ Core 1 (13 decks)

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