Chapter 6 - Computer Storage
Which of these audio compression formats is used by Apple music?
Advanced Audio Coding (AAC)
Because they use flash-based technology _____drives provide portable, fast, and reliable storage at a relative low price.
USB
One disadvantage of cloud storage is that _____.
data is only available when you are online.
A USB drive uses special transistors that can store data when not powered. USB stands for _______________serial bus.
universal
Select the characteristics of cloud storage.
- saving a photo on Flickr- purchasing online storage space - emailing a file to yourself - purchasing an external hard drive
Categorize the following terms associated with optical media. -Blu-ray discs -DVDs -CDs
-Blu-ray discs -Store roughly 50 GB -Used to store HD movies -DVDs -Store roughly 4.5 GB -Used for movie rentals (non-HD) -CDs Store roughly 700 MB -Used for music albums
Select two optical drives.
-DVD drive -Hard disk
Match the capacity with the device -Laptop -Tablet or Smartphone -DVD
-Laptop 500 GB to 1TB -Tablet or Smartphone 16-256 GB -DVD 3-5 GB
DVDs provide approximately _____.
4.5 GB of data storage space.
Which of the following uses approximately 1 gigabyte of data?
5
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 optical drive media stores approximately 700 MBs of data?
CD
Though it could theoretically hold terabytes of data for thousands of years in a microscopic space, ___ storage, using genetic material, is a distant storage option.
DNA
To allow hard disk drive platters to spin more smoothly and cooler, some manufacturers seal the platters in _____.
Helium
A legacy audio format that has largely been replaced by higher quality AAC and WAV audio formats is the _____ format.
MP3
A popular lossy video and audio compression format is the ____ format.
MP4
Categorize the following as either memory or storage. Memory Storage
Memory -Random access memory (RAM) -L3 Cache -Processor registers Storage -Solid-state drive (SSD) -universal serial bus (USB) drive -Blu-ray disc -Read only memory (ROM)
Which of the following are the disadvantage of SSD storage?
More expensive than traditional hard drive storage
One emerging data storage challenge is the incredible amount of video being uploaded to ________.
YouTube
CDs store data using:
a reflective coating that has pits and lands.
DVDs store data using _____.
a reflective coating that has pits and lands.
Because it reduces an audio file's sampling rate to save space, the MP3 format is a(n) _________________ compression format.
audio
Some new laptops come with an L3 with a capacity of up to 8 MB.
cache
A significant advantage of using a solid-state drive instead of a traditional hard drive is that a solid-state drive uses _____.
electronics
Most popular lossy image compression format is the Joint Photographic _________ Group (JPEG, or JPG).
experts
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
One minute of MP3 audio uses approximately one ___ of data.
megabyte
One thousand kilobytes (KB) equals one ________.
megabyte
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 ___.
memristor
Because it has no physically moving parts, an SSD is extremely durable and energy efficient. SSD stands for __________________ state drive.
solid
Blu-ray discs and DVDs are ___media.
storage
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
Blu-rays provide approximately _____.
50 GB of data storage space.
A typical laptop has a storage capacity of approximately _____.
500 GB to 1 TB
A storage device that uses lasers to read CDs, DVDs, or Blu-ray discs is referred to as a(n) _____.
Optical drive
When referring to digital storage, RAID stands for:
Redundant array of independent discs
Which of the following devices have no moving parts?
SSDs provide extremely fast, efficient storage.
A thousand gigabytes (GB) equals one ________.
Terabyte
E-mailing yourself a document so that it is available online is an example of using ___________ storage.
cloud
Having your files stored on multiple online servers means there is minimal risk of your data being lost. This is a significant advantage of using ____________storage.
cloud
Using online servers to store data is called __________storage.
cloud
Because it allows for their files to be accessed from any device on the Internet, many users like to back up their files using _____.
cloud storage
E-mailing a file to yourself is an example of using _____.
cloud storage.
Blu-ray disks have pits and lands that absorb or reflect a laser beam and can store approximately 50 ____________of data.
gigabytes
Flash technology provides fast access time since it uses no ___________moving parts.
mechanical
A million bytes of data equals approximately one _____.
megabyte
One million bytes equals a ____________ of data. This is enough to store the text in approximately four books in plain text.
megabyte
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
A storage device that uses lasers to read CDs, DVDs, or Blu-ray discs is referred to as a(n) _____________ drive.
optical
Server banks have storage capacities measured in____________
petabyte
Server banks have capacities measured in _____.
petabytes
The __________the access time, the faster your data will reach your processor.
shorter
Which of the following are characteristics of a DVD?
-Holds approximately 4.5 GB of data. -Uses pits and lands to store data.
Which of the following are characteristics of a CD?
-Holds approximately 700 MB of data -Uses pits and lands to store data
CDs provide approximately _____.
700 MB of data storage space..
One thousand bytes equals a __________. This is roughly enough to store a short email in plain (not rich) text.
kilobyte
Which of the following are considered storage media?
-DVDs -Blu-ray discs
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 solid state drive storage devices?
-Durable, no moving mechanical parts -Use electronic circuits to store data
Match the image compression formats. -Joint Photographic Experts Group (.jpg) -Portable Network Graphics (.png) -Graphics Interchange Format (.gif
-Joint Photographic Experts Group (.jpg) -Most popular lossy image compression format -Portable Network Graphics (.png) -Most popular lossless image compression format -Graphics Interchange Format (.gif) -Older lossless format—popular with simple animations
Select three storage devices.
-Optical drives -USB drives -External hard drives
Which of the following are image compression formats?
-PNG -JPEG
Which of the following are advantages of helium hard drives over traditional hard drives?
-Platters stay cooler -Platters spin faster -More platters can be placed in the same space
Which of the following are video file compression formats?
-QuickTime -AVI -MP4
Select two reasons to compress a file.
-Reduce bandwidth needed to transmit a file -Reduce storage space requirements
Which of the following are advantages of using cloud storage?
-Redundancy; data is stored on multiple servers. -Availability; data can be retrieved by any Internet-connected device.
Which of the following two are the characteristics of computer storage?
-Sometimes referred to as secondary storage -Retains data when power is turned off
Which of the following two are advantages of using a universal serial bus (USB) drive instead of a DVD?
-USB drive has shorter access time -USB drive is more durable
Which of the following three are characteristics of a Blu-ray disc?
-Uses pits and lands to store data -A blue spectrum laser reads its pits and lands -Holds approximately 50 GB of data
Which of the following advantages of SSD storage?
-Very fast -Data are available when not connected to the Internet -Durable and reliable
Regarding access time, the:
-shorter the access time, the faster the hard drive.
Rank the following optical media by capacity with the smallest at the top.
1. Compact Disc 2. Digital Versatile Disc (Single layer) 3. Digital Versatile Disc (double layer) 4. Blu-ray disc 5. Ultra Blu-ray Disc
Rank these in order of size with the smallest on top.
1. byte 2. megabyte 3. gigabyte 4. petabyte
Match the following regarding file compression: 1. Lossless 2. Lossy 3. Zip
1. reduces space required by reducing redundancy within files 2. reduces space required by removing less valuable data 3. a lossless compression format
One kilobyte equals ___ bytes.
1000
Which of the following items uses approximately 1 terabyte of data?
2
Though it could theoretically hold terabytes of data for thousands of years in a microscopic space, ____________ storage, using genetic material, is a distant storage option.
DNA
Even though it has tremendous potential and has been proven possible in the laboratory _____.
DNA, using genetic material, is a distant storage option
Match for following optical disc terms. DVD-ROM CD-R DVD-RW
DVD-ROM -A disc that cannot be burned CD-R -A disc that can be burned once DVD-RW -A disc that can be burned multiple times
Categorize the following. -Optical Media -USB drive
Optical media -Uses laser to read/write data -DVDs Blu-ray disc -CDs USB drive -Uses electronic circuits to store data -Durable -Very fast Also called a "thumb drive" or a "flash drive"
Categorize the following as either storage device or storage media. Storage Device Storage Media
Storage Device -Blue-ray player -Optical drive -External hard drive Storage Media -DVD Blu-ray disk -CD
A significant data storage challenge is that nearly 700 hours of video are uploaded to ___ every minute!
Youtube
Complete the problem. Three important types of memory in your computer include registers, random access memory (RAM), and _____.
caches
A laptop computer's memory capacity is measured in ___________ or terabytes of data.
gigabyte
A laptop computer's RAM is measured in _____.
gigabytes
A laptop computer's memory capacity is measured in _______________ or terabytes of data.
gigabytes
Most laptops have hard drive capacities measured in or terabytes.
gigabytes
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.
A large ____________ can remove data from a traditional hard drive, but would not hurt a Blu-ray disc.
magnet
The component of a computer that allows data to be retained after power is turned off is referred to as __________
storage
One thousand gigabytes equals one _____________. That is enough capacity to store 40 (average-sized) Blu-ray movies!
terabyte
