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Computing Nat5 revision
Karten in diesem Stapel (26)
- 1What are the variable types and what can they store?String: text
Boolean: True or False
Integer: whole numbers
Real: numbers with decimal point - 2Name two design notations Give an example of bothGraphical (flowchart)
Text (Pseudocode) - 3List two things that make your code more "readable"Internal Commentary - explaining what your code does
Meaningful variable names - 4Name the three types of testing, give a defination for each oneNormal: in range
Extreme: at the edges of range
Exceptional: out of range - 5Name the three types of errorsSyntax, Logic and Execution
Check out the “Know your Errors” section on our website – goo.gl/s0X5Cj - 6How do you convert bits to bytes?Divide by 8
- 7How do convert bytes to bitsMultiply by 8
- 8Give advantages of using vector graphicsEach object can be moved independently.
Background isn't stored (reduces file size)
File is size is smaller - 9Give disadvantages of using Vector graphicsNot suitable for pictures or moving images
- 10What is bitmap?Binary Colour code in pixels
- 11Name three storage devicesFlash Drive
Hard Drive
Opical Storage (CD, DVD etc) - 12You need to know four legal acts, name themData Protection Act
Computer Misuse Act
Copyright, Designs and Patents Act
Communications Act
(Everything about the law - goo.gl/uvwtcK) - 13What are the three main parts of the processor?ALU (Arithmetic and Logic Unit)
Control Unit
Registers - 14What does RAM stand for?Random Access Memory
- 15What is Translation?When high level programs need to be translated into machine code in order for the computer to run the program
- 16What 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 - 17List things that make a user interface more "user friendly"Easy navigation
Good readability
Clear and consistant visual layout
Correct for the target audience - 18What 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
- 19What is a Syntax error?Misspelt variables or parts of the code.
These stop the program from working - 20What happens to data stored in the ROM when the computer is switched off?Nothing, it remains the exact same
- 21Name two standard formats for sound and give details about themWAV - High quality, large file size
MP3 - reasonable quality, smaller file size - 22Name three output devicesMonitor
Speakers
Printer - 23Name four input devicesKeyboard
Scanner
Mouse
Microphone
See more at pinterest.com/gcomputing/input-output-and-storage-devices/ - 24What does HTML stand for?Hyper Text Markup Language
- 25Name three security risks to dataDOS attack
Viruses
Hackers - 26Name three software security precautionsPasswords
Firewall
Anti-virus software
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