1a process that manages how and where data on a
storage disk, typically a hard disk drive (HDD), is stored, accessed
and managed.
file system
2 It is a logical disk component that manages a disk's internal
operations
file system
3considered simple and reliable, and it is
modeled after legacy file systems.
file allocation table
4a file system for the Linux OS,
and it is a shared disk file system. it offers direct access to
shared block storage and can be used as a local file system.
global file system
5one of the safest and most secure options.
online storage
6These are
magnetic storage devices that have
been around since the 1950s
hard disk drive
7was developed for use with Mac
operating systems. Originally introduced in
1985 for floppy and hard disks
Hierarchical file system
8the default file system for Windows products
from Windows NT 3.1 OS onward.
New Technology File
System (NTFS)
9vendor-neutral file system used
on optical media and DVDs
Universal Disk Format (UDF)
10They don’t have the same risk of
becoming infected with a virus that a hard drive
will have
magnetic tapes
11convert the
electronic 0s and 1s in the magnetic fields on the disks.
Read/Write Heads
12controls the movements of the internal parts and controls the
movement of data into and out of the drive.
Logic Board
13mechanical nature of reading and writing data on
rotating platters limits the performance of disk drives to approximately
three orders of magnitude ( 1000 times) less than the performance of data
transfers to memory chips.
buffer memory
14it don’t rely on
magnets and disks, instead they use a
type of flash memory called NAND. semiconductors store information
by changing the electrical current of
circuits contained within the drive.
solid-state drives
15the process whereby you
store data on a network device, or on a server.
network storage
16The data written on
them is permanent and cannot be removed or
overwritten.
CD-ROM, DVD-ROM
17Whatever
data you save on a blank recordable disk will then
be permanently stored on that disk
CD-R, DVD-R
18This allows you can to write new
data on them and erase unwanted data from
them as much as you want.
CD-RW, DVD-RW
19physical media where data is stored in a disk drive
platter
20are rigid, thin circles that spin under the power of the
drive spindle motor.
platter
21 a slicing technique that creates
cross sections of a solid of revolution by slicing
perpendicular on the axis of rotation and calculating
the volume of the solid by adding the volumes of the
infinitely many thin cross-sections.
disk method
22defines how files
and directories are stored, how disk space is
managed, and how to make everything work
efficiently and reliably.
file system implementation
23used to boot the
computer
mbr
24attached at the center to a rod or pin
that is directly attached to the shaft of the motor that
controls the speed of rotation.
spindle/motor
25locate the
active partition, read in its first block
boot block
26It contains all the key parameters about the file system
and is read into memory when the computer is booted or the file
system is first touched.
super block
27a data structure which is used to identify which
block belongs to which file. It contains the attributes and disk
addresses of the file's blocks
l-nodes
28introduces
problems like if the original file or the shared file are appended
with new features then it will not be updated in both the copies
of the file, it is updated only at its original location.
shared files
29maintains the operating system of
the servers
server administrator
30maintains the network
infrastructure, such as the routers and switches, and
troubleshoots network-related problems.
network administrator
31maintains the database
system used by the company or organization.
database administrator
32maintains the daily
operation of security systems, and can handle things like
systems monitoring and running regular backups
security systems administrator
33includes installing and configuring networking
software and applications software, laying out and connecting cables...
implementation
34includes training new users, updating network,
application and security software;
management
35includes responding to user reports about service
interruptions, analyzing network logs, and applying appropriate
solutions.
troubleshooting
36includes researching hardware and software upgrades,
reading trade publications to keep abreast of new networking
technology,
self-education
37responsible for the physical and technical
aspects of a database, such as installing upgrades and
patches to fix program bugs
system dbas
38support a database that has been designed
for a specific application or a set of applications, such as
customer service software.
application dbas
39someone who
gives expert advice to companies regarding their
internal security procedures and can also help to
detect any weaknesses in a company's computer
network that may make them vulnerable to cyber
attacks.
security systems administrator
40an operating system which was first
developed in the 1960s, and has been under
constant development ever since.
unix
41an instance of a program in
execution. A set of processes combined together make a
complete program
process