CS midterms pt3 Flashcards
, is
the location where a computer keeps data, information,
secondary storage
refers to
long-term, permanent access of data and information.
Storage
is the hardware that records and/or
retrieves items to and from storage media.
storage device
is the process of transferring data, instructions, and infor-
mation from memory to a storage medium.
Writing
the process of transferring these items from a storage
medium into memory.
Reading
is the number of bytes (characters) a storage medium can hold.
Capacity
measures (1) the amount of time it
takes a storage device to locate an item on a storage medium
or (2) the time required to deliver an item from memory
to the processor.
Access time
is the speed with which data, instructions,
and information transfer to and from a device.
Transfer rate
, also called a hard
disk drive (HDD), is a storage device that contains one
or more inflexible, circular platters that use magnetic
particles to store data, instructions, and information.
hard disk
is made of aluminum, glass, or ceramic and has
a thin coating of alloy material that allows items to be
recorded magnetically on its surface.
platter
aligns the magnetic particles
horizontally around the surface of the disk.
Longitudinal recording
, by contrast, hard disks align
the magnetic particles vertically, or perpendicular to the
disk’s surface, making much greater storage capacities
possible.
perpendicular recording
is the number of bits in an area on a stor-
age medium.
Density
is the process of dividing the disk into tracks
and sectors
Formatting
is one of the series of concentric circles on one of
the surfaces of a magnetic hard disk platter.
track
is an individual block of data,
or a segment of a track. Several sectors form a cluster.
sector
mechanism that reads items and writes items in the drive
as it barely touches the disk’s recording surface.
read/write head
is a
separate, freestanding storage device that connects with a
cable to a USE port
external hard drive
) is a removable
storage device for folders
USB flash drive (universal serial bus
is a removable flash memory storage device,
memory card
is a type of storage medium that consists of a
flat, round, portable disc made of metal, plastic, and lacquer
that is written and read by a laser.
optical disc
Recall that cloud computing refers to an environment of
servers that house and provide access to resources users access
via the Internet.
Cloud Storage
uses software to emulate hardware
capabilities, enabling companies to scale,
Infrastructure as a
service (IaaS)
Some companies specify the
applications, security settings, and computing resources
available to employees on their desktop computers.
- Desktop as a Service:
) allows users and applications to
access a company’s data.
Data as a service (DaaS
allows developers to create, test, and run their
solutions on a cloud platform without having to
purchase or configure the underlying hardware and
software.
Platform as a service (PaaS)
is digital currency that can be used
to transfer money or payment between users or corpo-
rations.
Cryptocurrency
, such
as Venmo, enable you to transfer money between your
credit card or bank account to another user.
Payment apps
, such as ApplePay, is an app that is connected to a specific payment card or financial account
digital wallet