Computer Storage

Storage media

1. CD 2. DVD 3. Blu-ray disk

Storage device

1. Optical drive 2. Blu-ray player 3. External hard drive

memory

1. Random access memory (RAM) 2. Processor registers 3. L3 Cache

Storage

1. Universal serial bus( USB) drive 2. Solid-state drive 3. Blue-ray disk 4. Read only memory (ROM)

Which of the following uses approximately 1 gigabyte of data?

20 music CDs

Which of the following items uses approximately 1 terabyte of data?

40 blu-ray movies

CDs provide approximately ________ of data storage space.

700 MB

Which of the following three are characteristics of a Blu-ray disc?

A blue spectrum laser reads its pits and lands; Uses pits and lands to store data; Holds approximately 50 GB of data

DVD-RW

A disc that can be burned multiple times

CD-R

A disc that can be burned once

Which of these audio compression formats is used by Apple music?

Advanced Audio Coding (AAC)

Judy wants to purchase a Blu-ray disc that can be recorded on multiple times. She should choose discs that are labeled _____.

BD-RE

Which of the following are disadvantages of using cloud storage?

Data stored on someone else's server can be accessed by anyone who has administrator privileges to the server. Data are only available if you are online.

Which of the following are characteristics of a DVD?

Holds approximately 4.5 GB of data. Uses pits and lands to store data.

The two most common audio file formats are WAV and ________.

MP4

Which of the following two are characteristics of a Blu-ray disc?

Pits and lands that are read by a blue spectrum laser beam. A plastic disc with a reflective coating.

Which of the following are advantages of helium hard drives over traditional hard drives?

Platters spin faster More platters can be placed in the same space Platters stay cooler

Because of its capability of storing data in multiple hard drives, data warehouses use ________ technology to ensure redundant data storage.

RAID

Because of their capability of storing data in multiple hard drives, data warehouses use _____.

RAID

Because they have no mechanically moving parts, ________ provide extremely fast, efficient storage.

SSD

Which of the following three are the methods of using cloud storage?

Saving a photo on Flickr Purchasing online storage space E-mailing a file to yourself

Which of the following are characteristics of cloud storage?

Servers act like giant hard drives. Users can download files to other devices on the Internet. Files are backed up (stored on multiple servers).

DVDs

Store roughly 4.5 GB Used for movie rentals (non-HD)

CDs

Store roughly 700 MB; used for music albums

Flash drives or thumb drives are common names for _____ drives.

USB

One type of storage device is a ________.

USB drive

Blu-ray discs

Used to store HD movies Store roughly 50 GB

Which of the following are characteristics of solid-state drive (SSD) storage?

Uses flash technology Has no mechanically moving parts Uses the same technology that is found in USB drives (thumb drives)

DVD-ROM

a disc that cannot be burned

CDs store data using ________.

a reflective coating that has pits and lands

Which of the following are the optical drives?

blu-ray player; DVD drive

One character of information, for example, a letter or a number comprises of one ________ of storage.

byte

Some new laptops come with an L3 __ with a capacity of up to 8 MB.

cache

Three important types of memory in your computer include registers, random access memory (RAM), and _____.

caches

Because it allows their files to be accessed from any device on the Internet, many users like to back up their files using ________ storage.

cloud

E-mailing yourself a document so that it is available online is an example of using _________ storage.

cloud

The fact that data on servers is nearly always backed up onto other servers gives ________ storage a major advantage over other data storage methods.

cloud

Using online servers to store data is called __ storage.

cloud

The fact that data on servers are nearly always backed up onto other servers gives _____.

cloud a major advantage over other data storage methods

Rank the following optical media by capacity with the smallest at the top.

compact disc digital versatile disc (single layer) digital versatile disc (double layer) blu-ray disc ultra blu-ray disc

One disadvantage of cloud storage is that _____.

data is only available when you're online

Solid state drives store data using ________.

electronic circuits

A significant advantage of using a solid-state drive instead of a traditional hard drive is that a solid-state drive uses _____.

electronics with no moving parts

Most popular lossy image compression format is the Joint Photographic __ Group (JPEG, or JPG).

expert

Blu-ray disks have pits and lands that absorb or reflect a laser beam and can store approximately 50 ______ of data.

gigabytes

Most laptops have hard drive capacities measured in ___ or terabytes.

gigabytes

Storage capacity for laptop hard drives is typically described in terabytes or _____.

gigabytes

A laptop computer's memory capacity is measured in __ or terabytes of data.

gigbytes

To allow hard disk drive platters to spin more smoothly and cooler, some manufacturers seal the platters in _____.

helium

To allow hard disk drive platters to spin more smoothly and cooler, some manufacturers seal the platters in ______ rather than just air.

helium

A refracted laser beam striking a photoreceptor from many different angles allows __ storage technology to retain petabytes of data within 1 cubic inch of space.

holographic

A refracted laser beam striking a photoreceptor from many different angles allows _____.

holographic storage to retain many bits of data in the same location

A short, plain text e-mail uses about a _____ of data.

kilobyte

One thousand bytes equals a ___________. This is roughly enough to store a short email in plain (not rich) text.

kilobyte

DVDs have pits and lands that absorb or reflect a __ beam. DVDs can store approximately 4.5 GB of data (single layer).

laser

Because a metal platter is physically spinning, hard drives have:

longer access times than solid state hard drives.

Because it reduces an audio file's sampling rate to save space, the MP3 format is a(n)__ compression format.

lossy

Most desktop computers use ________ to store data.

magnetic hard drives

A million bytes of data equals one ________.

megabyte

One million bytes equals a ______ of data. This is enough to store the text in approximately four books in plain text.

megabyte

One thousand kilobytes (KB) equals one ________.

megabyte

One million bytes of data equals one:

megatybe

An electronic element that stores data by changing its resistance based on the current that has passed through it (similar to RRAM) is called a(n) ___.

memristor

An electronic element that stores data by changing its resistance based on the current that has passed through it (similar to RRAM) is called a(n) _____.

memristor

An electronic element that stores data by changing its resistance based on the current that has passed through it (similar to RRAM) is called a(n) ________.

memristor

Because it is small, energy-efficient, and fast, _____ cards/drives is/are often used to increase smartphone or digital camera storage capacity.

microSD

Which 2 of the following are advantages of SSD storage over traditional (magnetic) storage?

most durable; faster

Portable Network Graphics (.png)

most popular lossless image compression format

Joint Photographic Experts Group (.jpg)

most popular lossy image compression format

Graphics Interchange Format (.gif)

older lossless format - popular with simple animations

A storage device that uses lasers to read CDs, DVDs, or Blu-ray discs is referred to as a(n) _____.

optical drive

A storage device that uses lasers to read CDs, DVDs, or Blu-ray discs is referred to as a(n) ________.

optical drive

Server banks have capacities measured in _____.

petabytes

Server banks have capacities measured in ________.

petabytes

Blu-ray technology stores data using ________.

pits and lands that are read by a blue spectrum laser beam

Which of the following item comes in capacities measured in petabytes?

server bank

In general, the ________ the access time, the faster the hard drive.

shorter

The _____ the access time, the faster your data will reach your processor.

shorter

Because it has no physically moving parts, an SSD is extremely durable and energy efficient. SSD stands for ________ state drive.

solid

Which of the following two are the characteristics of computer storage?

sometimes referred to as secondary storage; retains data when power is turned off

Mapping patient genomes and the increasing number of YouTube uploads mean we will need more and more cloud _________ capacity in the future.

storage

The component of a computer that allows data to be retained after power is turned off is referred to as __.

storage

The component of a computer that allows data to be retained after power is turned off is referred to as ________.

storage

A thousand gigabytes (GB) equals one ________.

terabyte

One thousand gigabytes equals one __________. That is enough capacity to store 40 (average-sized) Blu-ray movies!

terabyte

A USB drive uses special transistors that can store data when not powered. USB stands for _________ serial bus.

universal

A significant data storage challenge is that nearly 700 hours of video are uploaded to ___ every minute!

youtube