2375082
Description
Flashcards by mr.douglas, updated more than 1 year ago
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Created by mr.douglas
about 9 years ago
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| Question | Answer |
| What are the variable types and what can they store? | String: text Boolean: True or False Integer: whole numbers Real: numbers with decimal point |
| Name two design notations Give an example of both | Graphical (flowchart) Text (Pseudocode) |
| List two things that make your code more "readable" | Internal Commentary - explaining what your code does Meaningful variable names |
| Name the three types of testing, give a defination for each one | Normal: in range Extreme: at the edges of range Exceptional: out of range |
| Name the three types of errors | Syntax, Logic and Execution Check out the “Know your Errors” section on our website – goo.gl/s0X5Cj |
| How do you convert bits to bytes? | Divide by 8 |
| How do convert bytes to bits | Multiply by 8 |
| Give advantages of using vector graphics | Each object can be moved independently. Background isn't stored (reduces file size) File is size is smaller |
| Give disadvantages of using Vector graphics | Not suitable for pictures or moving images |
| What is bitmap? | Binary Colour code in pixels |
| Name three storage devices | Flash Drive Hard Drive Opical Storage (CD, DVD etc) |
| You need to know four legal acts, name them | Data Protection Act Computer Misuse Act Copyright, Designs and Patents Act Communications Act (Everything about the law - goo.gl/uvwtcK) |
| What are the three main parts of the processor? | ALU (Arithmetic and Logic Unit) Control Unit Registers |
| What does RAM stand for? | Random Access Memory |
| What is Translation? | When high level programs need to be translated into machine code in order for the computer to run the program |
| What is a DOS attack? | A Denial of Service attack - When a group of machines overload a website with requests so that it is unable to load. Meaning that the website effectively goes offline |
| List things that make a user interface more "user friendly" | Easy navigation Good readability Clear and consistant visual layout Correct for the target audience |
| What is the difference between internal and external hyperlinks? | Internal goes to pages in the same domain and exteral links to pages on websites outside the domain |
| What is a Syntax error? | Misspelt variables or parts of the code. These stop the program from working |
| What happens to data stored in the ROM when the computer is switched off? | Nothing, it remains the exact same |
| Name two standard formats for sound and give details about them | WAV - High quality, large file size MP3 - reasonable quality, smaller file size |
| Name three output devices | Monitor Speakers Printer |
| Name four input devices | Keyboard Scanner Mouse Microphone See more at pinterest.com/gcomputing/input-output-and-storage-devices/ |
| What does HTML stand for? | Hyper Text Markup Language |
| Name three security risks to data | DOS attack Viruses Hackers |
| Name three software security precautions | Passwords Firewall Anti-virus software |
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