IT

Question 1

What is meant by analouge data?

Answer 1

physical data

Question 2

What is meant by digital data?

Answer 2

digital data

Question 3

Provide an example of an analogue device.

Answer 3

clock, records, polaroids.

Question 4

Provide an example of a digital device.

Answer 4

computer, phone, laptop, digital watch, tv etc.

Question 5

Can you convert analogue to digital, if so how?

Answer 5

yes, by recording or sampling.

Question 6

List three advantages of storing data digitally.

Answer 6

data retrieval, efficiency, security, accessibility, scalability

Question 7

List three disadvantages of storing data digitally.

Answer 7

loss of quality, expense, management.

Question 8

How are images stored digitally?

Answer 8

in pixels as vector or bitmap graphics

Question 9

List the two types of compression

Answer 9

lossy, lossless

Question 10

what does lossy compression do?

Answer 10

compresses data to a very small size but loses some data and/or quality.

Question 11

what does lossless compression do?

Answer 11

compresses data by not very much but loses no data.

Question 12

more pixels or a larger colour depth = ?

Answer 12

larger resolution and larger storage space required

Question 13

what can computer systems only process and store in?

Answer 13

computer systems can only store and
process binary digits

Question 14

list the four storage mediums

Answer 14

optical, magnetic, cloud and solid state

Question 15

give an example of optical storage

Answer 15

cd / dvd

Question 16

give an example of magnetic storage

Answer 16

hard disc drive

Question 17

give an example of solid state storage

Answer 17

solid state drive

Question 18

give an example of cloud storage

Answer 18

virtual memory

Question 19

list a type of software

Answer 19

application or bespoke or process control

Question 20

what is application software

Answer 20

An application program is a computer program designed to carry out a specific task

Question 21

what is bespoke software

Answer 21

a programme designed for a specific customer and their needs

Question 22

what is process control

Answer 22

Process control is the ability to monitor and adjust a process to give a desired output.

Question 23

give an example of utility software

Answer 23

task scheduling / antivirus / functions

Question 24

what does task scheduling do

Answer 24

it turns an application into sub-tasks and assigns each sub-task to a selected set of resources

Question 25

what does antivirus do

Answer 25

stops viruses

Question 26

what is a full backup

Answer 26

backing everything up

Question 27

what is a differential backup

Answer 27

backing everything up from that day and that day only

Question 28

what is an incremental backup

Answer 28

backing up everything since the last full backup

Question 29

what is a GFS backup

Answer 29

grandfather father son, once a month, once a week, once a day

Question 30

what's the four types of backup

Answer 30

full, differential, incramental, gfs

Question 31

when is a usb suitable

Answer 31

as a small storage facility

Question 32

when is a hard drive suitable

Answer 32

when you need to store large files

Question 33

when is a solid state suitable

Answer 33

ideal for portable devices

Question 34

when is cloud storage suitable

Answer 34

best platform for disaster recovery data.

Question 35

list the stages of the system development lifecycle

Answer 35

investigation, analysis, design, implementation, maintenance, evaluation

Question 36

what happens in the investigation stage

Answer 36

you use investigation methods such as interviews, paper trail and observation

Question 37

what happens in the analysis stage

Answer 37

looks at the system requirements and how to meet them

Question 38

what happens in the design stage

Answer 38

you design the final software

Question 39

what happens in the implementation stage

Answer 39

you add the software to where it needs to be using one of the implementation methods.

Question 40

what happens in the maintenance stage

Answer 40

maintaining the sytem

Question 41

what happens in the evaluation stage

Answer 41

you evaluate the final product

Question 42

list one problem with online sources

Answer 42

out of data info, biased info, not accurate info

Question 43

how do you verify info

Answer 43

check multiple sources and use trustworthy websites

Question 44

what is the pilot implementation method

Answer 44

trying the system in one location then expanding it to all other locations.

Question 45

what is the big bang implementation method

Answer 45

instantly implementing the new system and wiping the old one

Question 46

what is the parallel implementation method

Answer 46

adding one system next to the new one then phasing the old system out

Question 47

how do you market to new customers

Answer 47

social media and websites and data mining

Question 48

how do you market to existing customers

Answer 48

email, social media, data mining and websites

Question 49

what are the two types of damage

Answer 49

accidental or malicious

Question 50

how can accidental damage occour

Answer 50

by accidentally deleting a file

Question 51

how can malicious damage occur

Answer 51

by purposefully doing damage

Question 52

list two ways systems can be protected

Answer 52

firewalls, antivirus, encryption and hierarchal access levels

Question 53

what is a passive digital footprint

Answer 53

data collected without a users knowledge

Question 54

what is an active digital footprint

Answer 54

data collected with the users active knowledge

Question 55

what can a digital footprint affect

Answer 55

employers to monitor employees or potential employees, security services to gather information, applications to target potential customers

Question 56

what did ada lovelace do

Answer 56

first computer programmer

Question 57

what did james gosling do

Answer 57

created java

Question 58

what did grace hopper do

Answer 58

made the first electronic computer

Question 59

what did alan turing do

Answer 59

devised computational theory

Question 60

what did steve jobs do

Answer 60

founded apple, developed smart phones

Question 61

what did tim berners do

Answer 61

developed www