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Tutor HuntTest QuestionsComputing QuestionsYear 10 Computing Questions

 

Text, Sound And Images (GCSE Computing)

The following is a GCSE Computing test covering 'Text, Sound And Images' from the broader topic 1. Data Representation. The test is geared towards the CAMBRIGE-IGCSE exam board style syllabus.
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Below a typical questions that will be covered in this test. You final score will be logged on your account

What does 24-bit colour (true colour) mean in terms of channels and bits?
When an image is described as 300 DPI (dots per inch), what does that measure?
Why might a musician prefer lossless audio compression (e.g., FLAC) over lossy (e.g., MP3) when archiving recordings?
How many bytes are required to store the ASCII text string "CAT" (three characters) using extended ASCII (8-bit per character)?
Which of the following best defines sample resolution (bit depth) for digital audio?
Which graphic type stores shapes and mathematical descriptions that can be scaled without loss of quality?
Which of the following correctly describes the payload in a packet used when transmitting digital data like images or audio?
When converting analogue speech up to 8 kHz highest frequency, what minimum sample rate is required by the Nyquist theorem to avoid aliasing?
Which statement best summarizes why digital images and audio are stored in binary?
How many different amplitude levels can be represented by a 16-bit audio sample?
What is quantisation error in digital audio?