Chapter 8 Checkpoint Flashcards
True or False: storage device can be categorized as input or output devices
False
True or False: a storage medium is volatile; that is, items stored on it remain intact even when you turn off a computer or mobile device
False
True or False: compared with the access time of memory, the access time of storage devices is slow
True
True or False: because of current standards, head crashes no longer occur
False
True or False: while encrypted files offer greater security than unencrypted files, an operating system may require more time to open and access encrypted files
True
True or False: the transfer rate of external hard drives usually is slower than that of internal hard drives
True
True or False: solid-state media is more durable and shock resistant than other types of media, such as magnetic hard disks or optical discs, because it contains no moving parts
False
True or False: like a hard disk, you regularly should defragment an SSD to increase access time
False
True or False: when you are finished using a USB flash drive, simply remove it from the USB port
False
True or False: mini discs require a separate mini disc drive; that is, they do not work in standard-sized optical disc drives
False
True or False: with serial transfers, data is sent one bit at a time
True
True or False: an active RFID tag contains a battery than runs the chip’s circuitry and broadcasts a signal to the RFID reader; because they are so small, they are so small, they can be embedded in skin
False
______ ____ measures the amount of time it takes a storage device to locate an item on a storage medium and/or the time required to deliver an item from memory to the processor.
Access Time
A(n) _____ ____ is a storage device that contains one or more inflexible, circular platters that use magnetic particles to store data, instructions, and information.
hard disk
A hard disk’s storage locations consist of wedge-shaped sections, which break the tracks into small arcs called ________
sectors
_____ ______, sometimes called a buffer, consists of a memory chip(s) on a hard disk that stores frequently accessed items, such as data, instructions, and information.
Disk cache
A disc on which you can write multiple times sometimes is called a __________ disc.
multisession
The process of copying audio and/or video data from a purchased disc and saving it on your own media is called ________.
ripping
A selective backup sometimes called a(n) _______ backup.
partial
Enterprise storage often uses ________ technology as the interface that connects the devices to the network because it has much faster transmission rates than SCSI.
Fibre Channel
process of transferring data, instructions, and information from memory to a storage medium
writing
process of transferring data, instructions, and information from a storage medium into memory
reading
the number of bytes a storage medium can hold
capacity
the number of bits in an area on a storage medium
density
storage method in which the magnetic particles are aligned vertically to a disk’s surface, making much greater storage capacities
perpendicular recording
storage method in which the magnetic particles are aligned horizontally around a disk’s surface
longitudinal recording
flash memory chip type that consists entirely of electronic components, such as integrated circuits, and contains no moving parts
solid-state media
special-purpose chip and electronic circuits that control the transfer of data, instructions, and information from a drive to and from the system bus and other components in the computer
controller
the simplest RAID storage design, which writes data on two disks at the same time to duplicate the data
mirroring
storage technique in which a device is able to locate a particular data item or file immediately, without having to move consecutively through items stored in front of the desired item or file
random access
Differentiate between volatile and nonvolatile memory.
Volatile memory holds data and instructions temporarily, while nonvolatile memory remains intact even when you turn off a computer or mobile device.
Is a screen display volatile or nonvolatile?
volatile
How does the access time of storage compare with the access time of memory?
Access time of storage tends to be slower than access time of memory.
At what speeds do they access items?
Transfer rate is the speed with which data, instructions, and information transfer to and from a device. Transfer rates for storage are stated in KBps (kilobytes per second), MBps (megabytes per second), and GBps (gigabytes per second).
How does the transfer rate of external hard drives compare to that of internal hard drives?
The transfer rate of external hard drives is usually slower than that of internal hard drives.
List some advantages of external hard drives.
1) Transport a large number of files
2) Back up important files or an entire internal hard drive
3) Easily store large audio and video files
4) Secure your data
5) Add storage space to a mobile computer, such as a laptop or tablet
6) Add storage space to a desktop without having to open the case or connect to a network
What is the life span of a memory card?
Depending on the card, manufacturers claim their media can last from 10 to 100 years with proper care.
List ways to care for a memory card.
1) Do not bend the card
2) Avoid dropping the card
3) Keep cards away from direct sunlight
4) Do not expose cards to extreme temperatures
5) Do not remove the card while data is transferring to or from it
Describe differences between microfilm and microfiche.
Microfilm is a 100- to 215-foot roll of film.
Microfiche is a small sheet of film, usually about 4 x 6 inches.
What are some advantages of using microfilm and microfiche for storage?
1) Greatly reduces the amount of paper that firms must handle
2) Inexpensive
3) Have the longest life of any storage media
