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comsci > storage devices > Flashcards

storage devices Flashcards

1
Q

non-volatile memory that can be electrically erased and reprogrammed

A

Flash Memory

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2
Q

What are the types of flash memory?

A

Flash Drive, Memory Card, Solid-State Drive

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3
Q

In external hard disk, how many inches is for the laptop computer?

A

2.5 inches

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4
Q

How much is the capacity of external device?

A

80 TB Up to 3TB

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5
Q

usually associated with non-volatile or permanent storage

A

Internal hard disk

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6
Q

cpu chip

A

cache memories

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7
Q

capacity of a flash drive

A

4 GB to 128GB

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8
Q

compare the capacity storage of CD and DVD

A

CD=700 MB
DVD = 4.7 GB

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9
Q

how many times is the price of an SSD than a hard disk?

A

3-4 times

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10
Q

What are the types of DVD

A

DVD-RW, DVD-R, DVD-ROM

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11
Q

a smaller size format of a cd and dvd

A

mini CD and mini DVD

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12
Q

why was blu-ray called as blu-ray?

A

because blue laser is for reading and writing

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13
Q

how much is the capacity of a blu-ray disc?

A

25-50 GB

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14
Q

advent use of smaller and compact mobile computers

A

external DVD drives

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15
Q

saved, retrieved, modified, and then stored again

A

hard disk

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16
Q

information retains even the computer is turned off

A

Non-volatile

17
Q

altered,erased, and restored

A

DVD-Rewritable

18
Q

is a new generation of optical disc

A

blu-ray disc

19
Q

has a capacity of 1.44 MB

A

floppy disk

20
Q

laser technology to store onto a circular plastic or metallic disc

A

Optical disc

21
Q

pre-installed data

A

CD-ROM

22
Q

it is better than CD-ROM

A

DVD-ROM

23
Q

do not check errors

A

DVD-R

24
Q

checks errors

A

DVD+R

25
Q

rank the storage names with approximate

A

Kilobyte (1 thousand), Megabyte (1 million), Gigabyte (1 billion), Terabyte (1 trillion), Petabyte (1 quadrillion), Exabyte (1 quintillion), Zettabyte (1 sextillion), and Yottabyte (1 septillion)

26
Q

directly connected and accessible

A

primary memory

27
Q

secondary storage

A

not directly connected and accessible

28
Q

not directly controlled by the computer system

A

off-line storage

29
Q

tertiary storage

A

large volume

30
Q

enumerate the types of memory cards

A

Compact Flash, Memory Stick, MultiMedia Card, Secure Digital, MiniSD card, MicroSD

31
Q

enumerate the hierarchy of storage

A

primary memory, secondary storage, tertiary storage, off-line storage

32
Q

Enumerate the storage characteristics

A

Performance (Throughput, Latency, Capacity), Accessibility (Random access, Sequential Access), Volatility (Non-volatile, volatile)

33
Q

kinds of hard disk

A

internal and external hard disk

comsci (1 decks)

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