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WJEC Digital Technology Unit 1 Flashcards | StudBud
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WJEC Digital Technology Unit 1
WJEC Digital Technology Unit 1
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1
Lady Ada Lovelace (1815-1852)......
was the first person to know computers could do more than write letters.
was the first person to know computers could do more tha calculate numbers.
was the first person to realise computers could do more than draw pictures.
was the first person to realise computers could do more than make noise
2
After system investigation, what is the next stage?
System Analysis
System Implementation
System Design
System Evaluation
3
How many colours are respresented by using a byte (8 bits) for each pixel?
324
256
524
625
4
What do we mean by managing security?
Allows duplication and deletion of user accounts
Allows deletion of user accounts
Allows creation and deletion of user accounts
Allows creation of user accounts
5
During the system design stage, what technical requirements should you look at?
The network requirement
The hardware required
The weather
The software required
6
The Society of Automotive Engineers divides autonomous vehicles into how many levels.
6
2
8
4
7
What is meant by disk defragmentation?
Defragmentation is the process where files are physically mixed up
Defragmentation is the process where files are physically deleted
Defragmentation is the process where files are physically arranged
Defragmentation is the process where files arephysically re-arranged
8
What date is your Digital Technology exam?
5th June 2023
8th June 2023
9th June 2023
6th June 2023
9
Name 2 ways to protect your computer from attacks
Keyloggers
Encryption
Trojans
Firewalls
10
What is an advantage of analogue data?
As data is stored, there is no deterioration in the quality of the data.
As data is stored, there is no deterioration in the printing of the data.
As data is stored, there is no deterioration in the sound of the data.
As data is stored, there is no deterioration in the noise of the data.
11
Sir Tim Berners-Lee (1955-)....
is the creator of the World Wide Web.
is the creator of the robots
d is the creator of the planes
is the creator of the sailing
12
What is a disadvantage of digital data?
digital data may be more accurate
digital data may be louder
digital data may be less accurate
digital data may be rubbish
13
How would you best describe the parallel method?
Both systems run one after the other in parallel.
Both systems run away with each other, in parallel.
Both systems run down a road, in parallel.
Both systems run at the same time, in parallel.
14
Steve Jobs (1955-2011)...
He commoditised computing, and developed phones and hand-held devices.
He commoditised computing, and developed smartphones and hand-held devices.
He commoditised computing, and developed TVs.
He commoditised computing, and developed hand-held devices.
15
What are vector graphics?
These images do not store the data by pixels but are a set of instructions
These images do not store the data by pixels but are dots
These images do not store the data by pixels but are squares
These images do not store the data by pixels but are triangles
16
What are the 3 ways in which you can implement a new computer system?
parallel method.
‘big bang’ method
All of the above
pilot method
17
How would you best describe the "big bang" method?
where a company immediately startsusing the new system.
where a company never startsusing the new system.
where a company slowerly startsusing the new system.
where a company quickly startsusing the new system.
18
What are the dots called when storing digital graphics?
The dots are called points
The dots are called pixellls
The dots are called pixels.
The dots are called photos
19
What are examples of analogue data?
Our voices: as we speak, travel through the air like sound waves.
The sound coming from any acoustic instrument.
MP4 videos played on a mobile phone
MP3 songs played on an ipad
20
How many stages are there to the SDLC?
9
7
5
6
21
Name 2 different ways a device can connect to the internet
Tablet
Broadband
Mobile phone
Satellite
22
How can you investigate the current system?
Carry out questionnaires
Carry out interviews
Lisen to the radion
Watch TV
23
Name 2 advantages of using a robot within an organisation
Costs a lot to repair
Able to work continuously, 24/7.
Break down all the time
The standard of work is consistent.
24
What is a disadvantage of analogue date?
Analogue data can get better when it is copied or transmitted
Analogue data can be really good when it is copied or transmitted
Analogue data can improve when it is copied or transmitted
Analogue data can deteriorate when it is copied or transmitted
25
What is an example of an autonomous robot?
Dyson Vacuum Cleaner
Robo-cleaner
Shark Hoover
A Mop
26
Alan Turing (1912-1954)...
developed computational theory upon which modern computing is based.
developed travelling theory upon which modern computing is based.
developed theory upon which modern computing is based.
developed typing theory upon which modern computing is based.
27
What is malware?
Software that will save everything in the cloud
Software that will help a computer to operate
A term to describe software used to disrupt the operation of acomputer.
Means malicious software.
28
What does an analogue to digital converter do?
An (A/D) converter converts continuous signals into digital letters
An (A/D) converter converts continuous signals into digital numbers
An (A/D) converter converts continuous signals into digital music
An (A/D) converter that converts continuous signals into digital images
29
What is digital data?
Digital data is a combination of A and B
Digital data is a combination of letters
Digital data is a combination of 1 and 2
Digital data is a combination of numbers 1 or 0.
30
Autonomous robots are.......
intelligent machines that can't perform tasks in the world on their own
intelligent machines that need humans to help them
intelligent machines that don't perform tasks in the world on their own
intelligent machines that can perform tasks in the world on their own
31
Autonomous vehicles are........
An autonomous vehicle, also known as a self-driving motorbike
An autonomous vehicle, also known as a self-driving caravan
An autonomous vehicle, also known as a self-driving van
An autonomous vehicle, also known as a self-driving car
32
What is meant by file compression?
Compression is the process of making a file size nothing.
Compression is the process of making a file size bigger.
Compression is the process of making a file size huge.
Compression is the process of making a file size smaller.
33
What is an operating system?
An operating system is a software that manages a computer system.
An operating system is a software that focuses a computer system.
An operating system is a software that changes a computer system.
An operating system is a software that deletes the computer system.
34
How can we represent analogue sound as digital data?
The absortion method is used.
To represent analogue sound as digital data, the sampling process is used.
Sampling is measuring the sound level several times per sec
The conversion process is used.
35
What is analogue data?
Data that is physically represented.
Data that is on a mobile phone
Data that is on an ipad
Data that is stored on a computer
36
What is Wi-Fi – 802.11?
wireless data sent between a device and the internet at high speed.
wireless data that is sent between device and internet at slow speed.
These allow wireless data exchange between a device and a car
These allow wireless data exchange between a device and a mobile phone
37
How would you best describe the pilot method?
Large scale everywhere
All at once
Over a small period of time
Small scale one small part of the business
38
Name one type of malicious damage
Social engineering attacks, phishing.
Denial of service attacks (DOS/ DDOS).
Flood or Fire
Accidentally not saving a file
39
How do we store digital black and white graphics on a computer?
Black and white bitmap graphics use bit (x or y) t
Black and white bitmap graphics use bit (1 or 0)
Black and white bitmap graphics use bit (1 or 2)
Black and white bitmap graphics use bit (A or B)
40
Name 2 examples of examples of industrial robots
Welding
Watching TV
Eating dinner
Installation of pavements
41
What is a Denial of Service attack?
Prevention of access to systems by sending small texts
Prevention of access to systems continual sending huge amounts of messages
Prevention of access to systems by sending small messages
Prevention of access to systems by sending voice notes
42
Admiral Grace Hopper (1906-1992)...
devised the first commercial electronic computer.
devised the first commercial electronic shop.
devised the first commercial electronic cleaner.
devised the first commercial electronic airplane.
43
What are the two types of threat to a computer system?
by hacking
by accident
accidental and malicious damage
On purpose
44
Name 2 disadvantages of using robots within an organisation
They work 24/7
Loss in a large number of low skilled jobs.
They tend to be costly to buy
They save time and effort
45
What methods can be used to interact with our digital devices?
Singing
Speech
Biometrics
Dancing
46
What is meant by the word robot?
A robot is a phone, capable of performing a series of actions.
A robot is a person, capable of performing a series of actions.
A robot is a machine, capable of performing a series of actions.
A robot is a machine, not capable of performing a series of actions.
47
Industrial robots are........
Robots are used for manufacturing.
Robots are used for eating.
Robots are used for selling.
Robots are used for watching TV.
48
What is an advantage of digital data?
Storage of data in digital form requires less storage space
Storage of data in digital form requires less hard disk space
Storage of data in digital form requires less physical space.
Storage of data in digital form requires less space
49
Name 3 different ways a computer could be under threat
Antivirus software
Trojans
Keyloggers
Viruses
50
James Gosling (1955-)....
developed the English programming language.
developed the Python programming language.
developed the Java programming language.
developed the C++ programming language.
