CAT grade 11 Summary

, eat
CAT theory
Theory
Theory Paper 2 hours
1- 1 ✓
It's all about KT Theory
•




1.2 ✓
Input and output Theory
1- 3
Storage , memory and processing Theory ✓
'




2- 1
Local area networks Theory ✓
2- 2
The browsing experience Theory ✓
> it ✓
finding information Theory
3-1 but ✓
Mainly in Practical Paper
Working with files
the Theory Paper will also

have questions on word

processing spreadsheets,
databases and web design .




Module Module 1.1 ict
ICT 1 . 1


Theory
c-
ICT IÉsAHAboutICT_
W Information ,
Communication Technology
W ICT in the Workplace :
Positive
Negative Role of ICT .
Requires constant
upgrading of skills hardware
, ,
-




Work wherever need access to computer + internet
and software .




Communicate better
Results
-




W with and customers
skilled ICT employees
in smaller work pools of
highly workers replacing
store and
-




informed decisions
large
of data
process vast quantities
numbers staff , ICT employees to meet
more
of work hours
,


longer
identify adapt to trends Sales
-


+
changing
-


eg
expectations of costumers
.




.


-


Preform tasks to difficult tasks for humans


[ AT Slftyjfff
-


Preform repetitive mechanical reactions with
quality eg .
factory lines
individuals (smaller company globally)
-



↳ CAT empower use IoT to
is a set of tools to solve problems ,
use computers to solve problems go
W
Fashion web computer degin programs
,
designer us


W Doctors 1- health workers use devices to take care of patients



DAt-%EGO %é£✓c&@@Beo iGBGE✓ t-nfor-mo-OGakTTF.hn
servers
output
W
Computer Power Refers to :
-
• -



-
o
Desktops
performance / s)
speed of CPU
g§
••

and
§


j;
- - -



i.
-


-




_µBµ µµM
type
' l
of I
storage
•
on
Laptops


size of
ɧ : Notebooks
o


memory , process time
•

i
§
[
•



type of Graphics card ! Tablets 1£ ←




sto-qfww-feoagefommun-iRHCKGE9-ionl.sn
/ smartphones


- Porta #

, Laptops : Tablets :


-


Popular , Portable computers
-

Low power
consumption
-

touch screen , pen -

sensitive screen
Portable battery Power Quick small scale
computing
-
-




}
hindge keyboard touchpad Special operating systems designed for
- -




screens ,
,




My
-



Laptops more
expensive than mobile devices

Desktops ( more portable) long battery life
Manufactures create different wireless ( wifi) cellular data connectivity
-
-




categories to boost sales ( 3G)

Portable
computers ybriasiaptaoltabiets : '
, , -


touch screen laptops
swivil the to be a laptop
Digital
-


↳ screen or
convergence
tablet
)
7
W / google Android
Operating system ,
ios

Large keyboard removable
-




↳ colour is
screens

↳
Built-in data modems (3G) Portablecomputers
-

More Powerful that other tablets and

WGPSForti- Entertainment ( music , movies ,
games etc )
laptops ,
weigh more


battery life
,




↳ One or two camera's
-



Surf the web
-


short don't have built
ring ,


↳ Wifi in
cellular communication
to connect Social Networking ( Instagram , Twitter )
-




,


wireless networks -

Communication ( email ,
SMS )
w
speaker 1- microphone -


All these factors demand portability

A of Portable
vantage devices
-



,



run on
battery power
-




specify computer to conserve power
save
computing
-




green short
'
power ' '
hibernate
'
for
by sleep
,
or

-




Sleep mode
,
cuts power to "
" " " "" "" " " "

↳
"" "" "
" "
"" " "
"


When computer hibernates
-




saves RAM drive switches 5
Power
\
on
,


:
÷
of
completely ,
to wake up

setting brightness
Settings
switch on .
-


of screen

lower to save
battery
¥
→
Choosing a balance between
a Eupopean
-




power consumption and preformonce
by saving power usually decreases Unions have tried
Preformance of
system Choosing .
standardising charging cables
a
high preformonce increases power .
to reduce e- waste to a micro
-




USB port adapter .

, I
-




Server and Clients Protecting Your Information
-


Servers are
computers that Provide services resources
W
info important thus need to protect it
or is
very , ,




to clients that are linked on a Network •
data stored on computer must be backed up
-



Clients the computers all linked to server Private sensitive info must be protected against
•

are a or



Such services
providing internet Password protect encrypt data back up
storing rivals
-


are , ,
.
,
,


-


Different Power of devices ,
server more Powerful . Cop pies off -

site .




•
Portable storing devices flash 1- hard ,
drives get lost ,




don't disable USB ports
Dedicated Devices : company compute
use them .
in


household appliances
Hardware theft
↳ ATMs GPS ,
+ Protections
,




task
Designed to
preform one




Serial numbers info
-




are recorded
,
insurance companies want
Mark hardware with Ultraviolet pen easily identify equipment
-




can

Multi
,




-
-




Purpose Devices :
-


Intall secret software to be activated ,
when computer is stolen

↳ computers , phones . tablets if thief uses internet can track him .




Can load apps
which can preform •
use cable looks anchor equipment to solid object .




,

a wide variety of tasks store equipment
•
in lockable cabinets

•
Have motion sensors can set off alarms
,




(smaller computer ,
easier to steal)




Power failures happen



÷÷÷÷÷÷÷÷
,
could

loose all all current work could be used to
produce


orgy electricity help
info if
power goes down , doesn't if power


← could become corrupt


Uninterruptible
Power
Supply ( )
Ups




÷::::::::::::
TAG
SH
-




msn.mu. HA


for limited duration ,
won't
keep power going for long a computer against Power surges
Periods of time


when power fails ,
gives you time to

save your work and shut down .