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Year 8 Computing > Year 8 End of Year Exam > Flashcards

Year 8 End of Year Exam Flashcards

1
Q

How is data stored in a computer?

A

Data is stored as binary.

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2
Q

What is binary adition?

A

0 + 0 = 0
0 + 1 =1
1 + 0 =1
1 + 1 = 1 carry the 1
1 + 1 + 1 = 1 carry the 1

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3
Q

What is 4 binary bits

A

Nibble

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4
Q

What is a 8 binary bits?

A

Byte

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5
Q

What is the order of the file sizes? (e.g. bit, nibble)

A
  1. Bit
  2. Nibble
  3. Byte
  4. Kilobyte
  5. Megabyte
  6. Gigabyte
  7. Terabyte
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6
Q

What does ASCII stand for?

A

American Standard Code for information interchanger.

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7
Q

What is ASCII?

A

The representation of every letter, number and symbol as a binary number.

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8
Q

How many bytes in a kilobyte

A

1000 (8000 bits)

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9
Q

How many bytes in a Megabyte?

A

1,000,000 (8,000,000 bits)

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10
Q

How many bytes in a gigabyte

A

1,000,000,000 (8,000,000,000 bits)

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11
Q

How many bits in a terabyte?

A

1,000,000,000,000 (8,000,000,000,000 bits)

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12
Q

How is sound converted into binary for a computer to understant?

A

Usually captured by a microphone and then converted into a digital signal.

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13
Q

What is a sample rate?

A

The frequency at which samples are taken.

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14
Q

What is sample rate measured in?

A

Hertz (Hz)

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15
Q

What is one sample in Hz

A

One sample per second is one Hz

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16
Q

What is an analogue to digital converter?

A

It is used to sample a sound wave at regular intervals.

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17
Q

How do computers accept data?

A

They accept it as an input, process it and then produce some form of output.

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18
Q

What is a string?

A

Words with both letters and numbers.

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19
Q

What is a syntax?

A

The spelling and grammar of a programming language.

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20
Q

What is a variable?

A

A named container for a piece of data which can be used and changed through out a program.

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21
Q

What is a float?

A

A data type for decimal numbers.

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22
Q

What is the integer data a type for?

A

Whole numbers

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23
Q

What is a HTML used for in documents?

A

It is used to design and display documents in a web browser. It is often assisted by technologies such as CSS

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24
Q

What are the most common HTML tags?

A

<img></img>
<a>…</a>

<p>...</p>

<h1>...</h1>

<body>...</body>

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25
Q

What does <a>…</a> mean?

A

Hyperlink

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26
Q

What does <p>…</p> mean?

A

Paragraph

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27
Q

What does <h1>…</h1> mean?

A

Heading 1

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28
Q

What does <body>…</body> mean?

A

Main content

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29
Q

What does <img></img> mean?

A

Defines an image

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30
Q

What does HTML stand for?

A

Hypertext Markup Language

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31
Q

What is a HTML tag?

A

A code that defines the structure and content of a web page. It goes at the start and end of a page.

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32
Q

What is a URL?

A

The URL is the location of a specific website.

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33
Q

What does URL stand for?

A

Uniform Resource Locator.

34
Q

What are the features of a good website?

A

Informative
Images
Videos
Interactive (buttons)
Layout
Consistent Colour Theme
Use of font and styles

35
Q

What are examples of how CSS is used?

A

You can use CSS to change the font, colour, size and spacing of your content.

36
Q

What is CSS?

A

The language we use to style and layout web pages.

37
Q

What does CSS stand for?

A

Cascading Style Sheets

38
Q

What are some typical website features?

A

Navigation Bar
Logo
Home Link
Search Facility
Links to Social Media
Header
Footer
Use of Images
Buttons
Videos
Sound

39
Q

What is data encryption?

A

A security method where information is encoded and can only be accessed or decrypted by a user with the correct encryption key.

40
Q

What is router?

A

A device which allows for wireless connection to a network.

41
Q

What is a Network Switch?

A

Connects devices together and is responsible for directing data around the network.

42
Q

What is a server?

A

A computer which provides resources and or services to other connected devices.

43
Q

What does WAN stand for?

A

Wide Area Network

44
Q

What does LAN stand for?

A

Local Area Network

45
Q

What is the worlds biggest WAN?

A

The internet

46
Q

What is a Network?

A

2 or More interconnected devices

47
Q

What does GPU stand for?

A

Graphics Processing Unit

48
Q

What does a GPU do?

A

It is responsible for rendering the graphics on a computer.

49
Q

What is a Hard Drive?

A

It provides long term data storage and when the computers is switched of all the data is revieved.

50
Q

What does PSU stand for?

A

Power Supply Unit

51
Q

What does a PSU do?

A

The computer is powered by it.

52
Q

What is a Fan?

A

The computer is cooled by it.

53
Q

What is a heatsink?

A

The heatsink moves heat away from a critical component.

54
Q

What does RAM stand for?

A

Random Access Memory

55
Q

What is a RAM?

A

Short term memory and when the computer is switched off it is all deleated.

56
Q

What is a network card?

A

It allows the computer to access networks either wirelessly or using an Ethernet Cable

57
Q

What does CPU stand for?

A

Cental Processing Unit

58
Q

What does a CPU do?

A

The brain of the computer and it is in charge of processing all the instruction and data.

59
Q

What is a Motherboard?

A

The component that houses other components and allows them to communicate.

It has lots of things plugged into it.

60
Q

What is BIOS?

A

A set of Computer instruction in firmware which controls imput and output operations.

61
Q

What is E-saftey?

A

Being sage on the internet and social media.

62
Q

What is the internet?

A

Network of billions of connected devices,

63
Q

What is safe on the internet and what is not?

A

Only post information that is safe
Cyber Bulling - report it
Secure password
Viruses
Phishing
Online responsibility

64
Q

What is an internet browser?

A

An application to access a website.

65
Q

What is decomposition?

A

Breaking down a complex problem or system into smaller parts that are more manageable and easier to understand.

66
Q

What is pattern recognition?

A

It involves finding the similarities or patterns among small, decomposed problems that can help us solve more complex problems more efficiently.

67
Q

What is abstraction?

A

It is ignoring - the characteristics that we don’t need in order to concentrate on those that we do.

68
Q

What is Pseudo Code?

A

A simple way of describing a set of instructions that does not have to use specific syntax.

69
Q

How do internet browsers work?

A

It retrieves information from other parts of the web and displays it on your desktop or mobile device.

70
Q

What are computer imput examples?

A

Keyboard
Mouse
Touchscreen
Microphone
Scanner

71
Q

What are computer output examples?

A

Monitors
Headphones
Speakers
Printers
Projectors

72
Q

What is a Flowchart?

A

A picture of the separate steps of a process in sequential order.

73
Q

What is a bitmap image?

A

An image file format that can be used to create and store computer graphics.

74
Q

What does the colour depth of an image mean?

A

The number of unique colours that can be captured by a sensor. The colour depth of the pixels in an image file depends on the number of ‘bits’ in the file.

75
Q

What does a square mean in a flowchart?

A

Process

76
Q

What does a oval mean in a flowchart?

A

Start or end

77
Q

What does an arrow mean in a flowchart?

A

Connector that shows relationships between the steps.

78
Q

What does a diamond mean in a flowchart?

A

Yes or No decidions

79
Q

What does a parallelogram mean in a flowchart?

A

Input and output

80
Q

What is an algorithm?

A

An algorithm is a plan, a set of step-by-step instructions to solve a problem.

81
Q

What is resolution in an image metadata?

A

The total amount of pixels in an image

Year 8 Computing (3 decks)

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