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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

Which compression method is especially effective for simple images with long runs of the same colour (e.g., scanned text or icons)?
Which graphic type stores shapes and mathematical descriptions that can be scaled without loss of quality?
Which of the following best defines sample resolution (bit depth) for digital audio?
When an image is described as 300 DPI (dots per inch), what does that measure?
How many bytes are required to store the ASCII text string "CAT" (three characters) using extended ASCII (8-bit per character)?
What does 24-bit colour (true colour) mean in terms of channels and bits?
Which of the following explains why increasing bit depth in audio improves dynamic range?
What is quantisation error in digital audio?
Which of these audio file sizes (uncompressed) is closest for a 3-minute stereo recording at 44,100 Hz and 16-bit depth?
Which of the following correctly describes the payload in a packet used when transmitting digital data like images or audio?
What is the primary purpose of using a colour palette (indexed colour) in images?