Networking Terms List

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30 Οκτ 2013 (πριν από 3 χρόνια και 10 μήνες)

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Computer Hardware and
Networking Terms List

By: Christian Lawrence

Operating Systems


Operating System is an interface between
software and hardware


CPU


A CPU is an electronic circuit that executes
programs

RAM


RAM is a form of storage for computers

Hard Disk


A hard drive is a device that stores digitally
encoded data on rapidly spinning platters
with magnetic surfaces.


Serial cable


A serial cable is a cable that can transfer
information between two devices using
serial communication


Maximum

transfer rate

of 115 Kbps

Parallel Cable



A parallel cable sends several data signals
simultaneously over several parallel
channels


Maximum transfer rate is 150kbps

SCIS


SCIS
is a set of standards for physically
connecting and transferring data between
computers and

devices.

USB


USB is
intended to replace many varieties
of

serial

and

parallel ports.

FireWire


FireWire is
is a

serial bus

interface
standard

for high
-
speed communications
and

isochronous

real
-
time data transfer
.


400 Mb/s

Ethernet


Ethernet is
a family of

frame
-
based

computer networking

technologies
for

local area networks

(LANs).


Monitor


A monitor
displays images generated by
devices such as

computers, without
producing a permanent record.



CRT and LCD

Keyboard


A keyboard
uses an arrangement of
buttons or

keys, to act as mechanical
levers or electronic switches.


Mouse


A mouse
is a

pointing device

that functions
by detecting

two
-
dimensional

motion
relative to its supporting surface.



Drawing Tablet


A drawing tablet
is a computer

input
device

that allows one to hand
-
draw images
and graphics, similar to the way one draws
images with a pencil and paper
.

Scanner


A scanner
is a device that optically scans
images, printed text,

handwriting, or an
object, and converts it to a

digital image.



Digital Camera


A digital camera
takes

video

or
still

photographs, or both,

digitally

by
recording

images

via an

electronic

image
sensor.

Postscript


PostScript

(
PS
) is a dynamically
typed

programming language

best known
for its use as a

page description language

in
the electronic and

desktop publishing

areas


Inkjet printer


Inkjet printers

operate by propelling
variably
-
sized droplets of liquid or molten
material (ink) onto almost any sized page.


Laser Printer


A printer
rapidly produces high quality text
and graphics on plain paper
.

Imagesetter


An

imagesetter

is an ultra
-
high resolution
large
-
format computer output device


Zip Disk


The

Zip drive

is a medium
-
capacity
removable

disk storage

system

.

Jaz disk


The

Jaz drive

was a removable

disk
storage

system.



250 MB

CD


A CD is a pre
-
pressed

compact disc

that
contains

data

accessible
.


700 MB

DVD


DVD
s an

optical disc

storage

media
format.



4.7 GB

Removable Drive


A

removable disk

is storage media which
is designed to be removed from the
computer without powering the computer
off.


Network


A

computer network

is a group
of

interconnected

computers.

LAN


A

local area network

(
LAN
) is a

computer
network

covering a small physical area, like
a home, office, or small group of buildings,
such as a school, or an airport.


WAN


Wide Area Network

(
WAN
) is a

computer
network

that covers a broad area
.

Internet


The

Internet

is a

standardized, global
system of interconnected

computer
networks

that connects millions of people.


Intranet


An

intranet

is a private

computer
network

that uses

Internet

technologies to
securely share any part of an organization's
information or operational systems with its
employees.


TCP


The

Transmission Control
Protocol

(
TCP
) is one of the core protocols
of the

Internet Protocol Suite
.

Internet Protocal


The

Internet Protocol

(
IP
) is
a

protocol

used for communicating data
across a

packet
-
switched

internetwork

using
the

Internet Protocol Suite.


Internet Backbone


The

Internet backbone

is made up of a
large collection of interconnected
commercial, government, academic and
other high
-
capacity data routes and

core
routers

that carry data across the countries,
continents and oceans of the world.


Modem


Modem
is a

device

that

modulates

an
analog

carrier

signal

to
encode

digital

information, and
also

demodulates

such a carrier signal to
decode the transmitted information.


Cable Modem


A

cable modem

is a type of

modem

that
provides bi
-
directional data communication
via

radio frequency

channels on a

cable
television

(CATV) infrastructure
.

DSL


DSL

is a family of technologies that
provides

digital

data transmission over the
wires of a local

telephone network.


ISDN, T1, & T3


Integrated Services Digital Network

is a
telephone system network.



Data transfer


Data transfer

is the physical transfer
of

data

(a

digital

bit stream) over a point
-
to
-
point or point
-
to
-
multipoint

transmission
medium
.


Web browser


A

web browser

is a

software
application

for retrieving, presenting, and
traversing information resources on
the

World Wide Web.


Firewall


A

firewall

is a part of a computer system or
network that is designed to block
unauthorized access while permitting
authorized communications
.

ISP


An

Internet service provider

is a company
that offers its customers access to
the

Internet.


NSP


A

network service provider

(
NSP
) is a
business or organization that
sells

bandwidth

or network access by
providing direct

backbone

access to
the

Internet

and usually access to
its

network access points.



Router


A

router

is a

networking

device whose
software and hardware are usually tailored
to the tasks
of

routing

and

forwarding

information.


WWW


The

World Wide Web

is a system of
interlinked

hypertext

documents accessed
via the

Internet.